第一篇：初一升初二第十講情態(tài)動(dòng)詞教案

要考試，找戴氏

戴氏教育名師中心

主講人：何敏

第十講：情態(tài)動(dòng)詞

教學(xué)目標(biāo)

1、讓學(xué)生掌握情態(tài)動(dòng)詞有哪些。

2、讓學(xué)生掌握各情態(tài)動(dòng)詞的用法。教學(xué)重點(diǎn)難點(diǎn)

1、學(xué)生能夠掌握各情態(tài)動(dòng)詞的用法。

2、學(xué)生能夠正確運(yùn)用易混淆的情態(tài)動(dòng)詞。教學(xué)過程

Step1 問好，口語表達(dá)

Step2 復(fù)習(xí)上節(jié)課所學(xué)知識(shí)

Step3 教學(xué)內(nèi)容 A 情態(tài)動(dòng)詞有哪些？

Can, could, may, might, must, shall, should, need, will, would, dare, had better, have to, used to.B 各情態(tài)動(dòng)詞的用法

（1）Can： 表能力，“能，會(huì)”；

表可能，通常用于否定句和疑問句中，This boat can’t be hers, hers is black.（2）could：表can的過去式；

表請求允許，用于現(xiàn)在時(shí)和將來時(shí)，比can更委婉地提出請求。

（3）May: 表猜測，“可能”（只能用于肯定句，否定句用can’t）

表征求同意，May I come in?

（4）Might: may的過去式；

might比may更加委婉。

（5）Must: 表義務(wù)的“必須” 表事情的必要性和重要性。You must take care of your parents.表推測的“一定，準(zhǔn)是”（只有肯定猜測，否定猜測用can’t）

The lady must be a doctor.（6）Shall: 用于第一人稱的疑問句中，表示征詢意見。

“應(yīng)該”，多用于法律等條文中。（7）Should: 表義務(wù)或責(zé)任“應(yīng)該”。

（8）Need: 表必要性。

（9）Will: 表“意愿，意志”

（10）Would: will的過去式；

表示意愿或用于第二人稱的疑問句中，表禮貌委婉的請求，比can更委婉。

（11）Had netter: 最好，（had better not）

（12）Have to: “不得不”

（don’t have to

Do+s+have to）

（13）Used to: 過去常常

(usedn’t to / didn’t used to / Did + s+ use to)C 易混的情態(tài)動(dòng)詞

（1）Can/ could 與be able to: 表“能力”時(shí)

can只有現(xiàn)在和過去時(shí)兩種時(shí)態(tài)，其余時(shí)態(tài)用be able to，can指與生俱來的能力，be able to后天形成的能力。（2）May開頭的疑問句的回答：

肯定回答用may，否定回答用can’t / mustn’t /had better not（3）Must與have to: 要考試，找戴氏

戴氏教育名師中心

主講人：何敏

must強(qiáng)調(diào)主觀上的意志和決心，have to表客觀條件作用下得“不得不”（4）Must開頭的疑問回答：

肯定用must，否定用 needn’t / don’t have to（5）Must 的否定形式：mustn’t “不許，禁止”（must表推測時(shí)無否定形式，否定猜測用can’t）

（6）Need：作實(shí)義動(dòng)詞時(shí)，后接名詞、動(dòng)名詞、動(dòng)詞不定式 She doesn’t need to take any medicine.作情態(tài)動(dòng)詞時(shí)后接動(dòng)詞原形。

（7）Used to do與be used to doing : used to do過去常常做但是現(xiàn)在不做了 be used to doing：習(xí)慣于、、、

第二篇：情態(tài)動(dòng)詞教案

情態(tài)動(dòng)詞教案

Teaching Aims 【教學(xué)目標(biāo)】 1.Knowledge Aims（知識(shí)目標(biāo)）

1.掌握情態(tài)動(dòng)詞can, may, must, need, should…的含義和特點(diǎn)； 2.掌握情態(tài)動(dòng)詞用法。

2.Ability Aims（能力目標(biāo)）

1.Encourage the students to cooperate with others and enable them to formulate

grammatical rules.2.By learning, motivate the students 'inspiration and take an active part in the course of the class.3.Emotion Aims（情感目標(biāo)）

Build up the student’s confidence.Teaching Importance and Difficulties 【教學(xué)重點(diǎn)和難點(diǎn)】

1.含有情態(tài)動(dòng)詞的疑問句和否定句； 2.情態(tài)動(dòng)詞表示推測的用法。

Teaching Methods(教學(xué)方法)

Self-learning，cooperation and discussion自學(xué)（獨(dú)學(xué)、對(duì)學(xué)、群學(xué)）、合作、討論

Teaching Process(教學(xué)過程)Preparation and Self-learning 【自主學(xué)習(xí)、為新課奠基】

Complete the following tasks.（A級(jí) 識(shí)記類）（C層學(xué)生展示，B、A層學(xué)生補(bǔ)充）

一、何謂“情態(tài)動(dòng)詞”？

情態(tài)動(dòng)詞主要用來表示說話人的情感、態(tài)度等，是中學(xué)英語語法的重點(diǎn)，也是高考的熱點(diǎn)，是單項(xiàng)填空必考的一個(gè)知識(shí)點(diǎn)。情態(tài)動(dòng)詞在近五年高考中主要考查四點(diǎn)：情態(tài)動(dòng)詞表示推測和可能性的用法；情態(tài)動(dòng)詞與虛擬語氣；情態(tài)動(dòng)詞的表達(dá)“情感、態(tài)度、語氣等”，情態(tài)動(dòng)詞表示 “必要性”等方面的用法。

二、情態(tài)動(dòng)詞的特點(diǎn) 1.沒有人稱和數(shù)的變化。2.有些情態(tài)動(dòng)詞有過去式的變化: e.g.will → would , can → could , may→ might , dare → dared

三、情態(tài)動(dòng)詞的否定形式

情態(tài)動(dòng)詞+ not +動(dòng)詞原形can not: can't , must not: mustn't , need not : needn't Cooperation and Discussion 【合作探究、討論解疑】

Reading------知識(shí)問題化、問題層次化，提高閱讀能力！（B級(jí) 理解類）（B、C層學(xué)生展示，A層學(xué)生補(bǔ)充）

四、情態(tài)動(dòng)詞的用法及相互間的區(qū)別（注意：這是常考的考點(diǎn)）

1.can , be able to be able to 表示經(jīng)過努力后, 能夠做到;be able to 有多種形式的變化。can 1).表示體力或腦力方面的能力;2).表示允許、可能性。

could 是can的過去式, 表示過去有能力及過去存在的可能性;用于疑問句表示委婉地提出問題。

1)The fire spread through the hotel very quickly but everyone ____ get out.A.had to B.would C.could D.was able to 2)-Will you stay for lunch?-Sorry, __.My brother is coming to see me.A.I mustn't B.I can't C.I needn't D.I won't 2.may 表示詢問或說明一件事可不可做;表示某事有可能發(fā)生。might是may的過去式;用在疑問中比may委婉、客氣。1)-May I take this book out of the reading-room?-No, you mustn't.(Yes, you may.)2)-Might I make a suggestion?-Yes, you may.3.must 1).表示必須要做的事: 必須

2)表示很有把握的推斷: 一定, 準(zhǔn)是。have(has)to : have(has)got to 必須, 不得不。過去式: had to 3)-Must I get to the station before three o'clock?-Yes, you must.(No, you needn't.)4)I'm afraid you will have to wait a while.5)She must be in the classroom now.6)Mary ____ be in Paris, I saw her in town only a few minutes ago.A.mustn't B.shouldn't C.can't D.may not 4.shall 1)在疑問句中, 用于第一、三人稱表示說話人征求對(duì)方的意見或向?qū)Ψ秸埱蟆?)用于二、三人稱,表示說話人給對(duì)方的 命令、警告、允諾等概念。1)Yes, please.(No, please don't.)2)You shall have the English book as soon as I finish it.3)Everything that he owns shall be taken away from him.4)Your brother seldom comes to see you, ____? A.does he B.doesn't he C.will he D.isn't he 5)It's a fine day.Let's go fishing, ____? A.won't we B.will we C.don't we D.shall we 5.should 應(yīng)該;應(yīng)當(dāng)

1)You should listen to the doctor's advice.2)You should study the article carefully.6.will, would 1)在疑問句中用于第二人稱,表示說話人向?qū)Ψ教岢稣埱蠡蛟儐枴Ｓ脀ould語氣更加婉轉(zhuǎn)。

2)will 表示現(xiàn)在的習(xí)慣性動(dòng)作或狀態(tài);would 表示過去的習(xí)慣性動(dòng)作或狀態(tài)。3)will 用于各種人稱, 表示 意志、意愿、決心、允諾;would 表示過去時(shí)間的 意志、意愿、......。

(1)Don't smoke in the meeting room, ___ you? A.do youB.will you C.can you D.could you-Will you come with me?-Yes, I will.(I am sorry , I can't.)(2)-Would you tell us something about yourself?-Yes, I will.(3)_____.A.I don't B.I won't C.I can't D.I haven't 7.ought to 應(yīng)該;應(yīng)當(dāng)

1)You oughtn't to smoke too much.2)She ____ for what she has done.A.ought to praise B.ought be praised C.ought to have praised D.ought to be praised 8.dare 1.dare to come 2.dare come 1)He dare not tell the truth.2)He doesn't dare to come out at night.3)I don't know whether he ____ try.A.dare B.needs C.wants D.is allowed 9.need 1).作為情態(tài)動(dòng)詞:必須 2).作為實(shí)義動(dòng)詞: 需要

A.主語是人 need(to do something;to be done by somebody)B.主語是事物 need(doing;to be done)1)-Do they need to take any books with them?-No, they don't need to.2)-Need we buy any new equipment?-No, we needn't.3)This farm tool needs repairing.This farm tool needs to be repaired.4)-Shall I tell John about it ?-No, you ___.I've told him already.A.needn't B.wouldn't C.mustn't D.shouldn't 5)It's a fine day.You ____ take a raincoat with you.A.can't B.mustn't C.needn't D.may not [★★★]

五、情態(tài)動(dòng)詞的解題例析

(1)認(rèn)真審題，結(jié)合所給出的語境，正確把握說話者的語氣、情感、態(tài)度、觀點(diǎn)等。

(2)認(rèn)真思考所給選項(xiàng)中情態(tài)動(dòng)詞的基本特征和用法，并結(jié)合語境推敲答案。(3)要注意把握時(shí)間概念。

情態(tài)動(dòng)詞無論是表達(dá)“推測和可能性”，還是表達(dá)“虛擬”這一概念，只要是對(duì)過去已經(jīng)發(fā)生的事情進(jìn)行描述，一律用“情態(tài)動(dòng)詞+have done”這一結(jié)構(gòu)；對(duì)現(xiàn)在或?qū)淼氖虑檫M(jìn)行描述，用“情態(tài)動(dòng)詞+動(dòng)詞或系動(dòng)詞原形”。例如：

（NMET2008山東，24）Thank you for all your hard work last week.I don’t think we ______ it without you.A.can manage

B.could have managed C.could manage D.can have managed 根據(jù)題干中所給出的時(shí)間last week可知我們已經(jīng)做完了工作，已經(jīng)完成，故排除A、C兩項(xiàng)，再結(jié)合could have done表示虛擬語氣以及與前面的I don’t think…，故說話者想表達(dá)的意思是：離開了你，我們本不可能完成這項(xiàng)工作。故答案為B項(xiàng)。

Expansion and Improvement【知識(shí)拓展、能力提升】（D級(jí) 拓展類）（C、B層學(xué)生展示，A層學(xué)生補(bǔ)充）

★下面我們來看看常考的一些情態(tài)動(dòng)詞★

以下試題均來源于往年的高考試題，具有很強(qiáng)的針對(duì)性

(1)must表示推測，意為“一定??”，只能用于肯定句中。must have done意為：一定做過某事或某事肯定發(fā)生了。例如：

—She looks very happy.She ______ have passed the exam.—I guess so.It’s not difficult after all.A.should

B.could

C.must

D.might 【解析】句意為：她看上去很高興，一定是通過了考試。【答案】C(2)should(not)/ ought(not)to在中表示根據(jù)常規(guī)或常識(shí)推測，表示“某事應(yīng)該或不應(yīng)該發(fā)生”，語氣比must或can’t / couldn’t稍弱。例如：—How’s your tour around the North Lake? Is it beautiful? —It ________ be, but it is now heavily polluted.A.will

B.would

C.should

D.must 【解析】should此處表示推測，意為“應(yīng)該”。【答案】C ②There _________ be any difficulty about passing the road test since you have practiced a lot in the driving school.A.mustn’t

B.shan’t

C.shouldn’t

D.needn’t 【解析】句意：既然你在駕校進(jìn)行了大量訓(xùn)練，那么通過道路測試按理不應(yīng)該有困難。【答案】C(3)can, could表達(dá)推測時(shí)，一般用于疑問句和否定句中；can用于肯定句中表示一種理論上的可能性，并不牽涉是否真的會(huì)發(fā)生，在這種用法中can只能與動(dòng)詞原形連用；could用于肯定句中，語氣比may/ might更弱。例如： ①You ______ be hungry already — you had lunch only two hours ago!

A.wouldn’t

B.can’t

C.mustn’t

D.needn’t ②She ______ have left school, for her bike is still here.A.can’t

B.wouldn’t

C.shouldn’t

D.needn’t ③It is usually warm in my hometown in March, but it _____ be rather cold sometime.A.must

B.can

C.should

D.would ④Peter ____ be really difficult at times even though he’s a nice person in general.A.shall

B.should

C.can

D.must 【解析】①② 兩個(gè)考題中can用于中表示否定的推測，意為：不可能，一定不會(huì)； ③④兩個(gè)考題中can表示理論上的可能性，翻譯為：有時(shí)候會(huì)??。【答案】① B ② A

③ B ④ C(4)may(not)/ might(not)表達(dá)一種不太把握的推測，意為“或許，可能”；might的語氣比may較婉轉(zhuǎn)。例如：

① Liza ___ well not want to go on the trip---she hates traveling.A.will

B.can

C.must

D.may 【解析】may well為固定搭配，意為：很可能，極有可能。【答案】Ｄ

②

Although this ____ sound like a simple task, great care is needed.A.must

B.may

C.shall

D.should 【解析】這聽起來或許是一項(xiàng)簡單的任務(wù)，但卻需要極大的細(xì)心。【答案】B ③—I can’t find my purse anywhere.—You __ have lost it while shopping.A.may

B.can

C.should

D.would 【解析】結(jié)合語境可知，回答者是在提醒對(duì)方：或許購物時(shí)把錢包丟了。【答案】A

（二）表達(dá)虛擬語氣的情態(tài)動(dòng)詞

對(duì)過去的一種結(jié)果的假設(shè)或虛擬，用情態(tài)動(dòng)詞+have done這一結(jié)構(gòu)，常用的有以下幾個(gè)情態(tài)動(dòng)詞：

(1)should(not)/ ought(not)to have done本（不）應(yīng)該做某事，但卻沒有做或做了，含有責(zé)備或后悔之意。例如：

—I’m sorry.I _________at you the other day.—Forget it.I was a bit out of control myself.A.shouldn’t shout

B.shouldn’t have shouted C.mustn’t shout

C.mustn’t have shouted 【解析】對(duì)不起，我那天本不應(yīng)該對(duì)你大喊大叫的。【答案】B(2)could have done本來能夠做某事但未做。例如：

Thank you for all your hard work last week.I don’t think we ______ it without you.A.can manage

B.could have managed C.could manage

D.can have managed 【解析】根據(jù)題干中所給出的時(shí)間last week可知我們已經(jīng)做完了工作，已經(jīng)完成，故排除A、C兩項(xiàng)，再結(jié)合could have done表示虛擬語氣以及與前面的I don’t think?，故說話者想表達(dá)的意思是：離開了你，我們本不可能完成這項(xiàng)工作。【答案】B(3)needn’t have done本沒有必要做某事但卻做了。要注意needn’t do則表達(dá)“沒有必要去做某事”，時(shí)間上應(yīng)該是現(xiàn)在或?qū)怼＠纾?①—Catherine, I have cleaned the room for you.—Thanks.You ________ it.I could manage it myself.A.needn’t do

B.needn’t have done

C.mustn’t do

D.shouldn’t have done 【解析】根據(jù)句意可知Catherine對(duì)對(duì)方為她打掃了房間表示感謝并提到對(duì)方不必為她打掃房間。【答案】B ② The boss has given everyone a special holiday, so we

go to work tomorrow.A.can’t

B.mustn’t

C.needn’t

D.shouldn’t 【解析】老板給所有的員工放了假，所以我們明天不必再去上班。【答案】C(4)would(not)have done本來(不)會(huì)發(fā)生某事，但卻（發(fā)生了）或沒有發(fā)生。常用于虛擬條件句或含蓄虛擬條件引導(dǎo)的虛擬語氣，表示對(duì)過去所發(fā)生事情結(jié)果的假設(shè)。例如：

He hesitated for a moment before kicking the ball, otherwise, he ________ a goal.A.had scored

B.scored

C.would score

D.would have scored 【解析】句中otherwise為含蓄條件，相當(dāng)于if he had not hesitated for a moment before kicking the ball，這是對(duì)過去的一種虛擬假設(shè)。【答案】D(5)might have done表示“本來可能??”，但實(shí)際上沒有發(fā)生的事。例如： What a pity!Considering his ability and experience, he ________ better.A.need have done

B.must have done C.can have done

D.might have done 【解析】真是可惜！考慮到他的能力和經(jīng)驗(yàn)，他本來可以做得更好的。【答案】D

（三）表達(dá)“情感、態(tài)度、語氣” 等方面的情態(tài)動(dòng)詞 1.must表達(dá)“情感、態(tài)度、語氣”主要有以下用法：

(1)表示主觀的義務(wù)和必要，主要用于肯定句和疑問句，意思為“必須??，得??，要??”；由must引起的疑問句，肯定回答要用must或have to，否定回答要用needn’t或don’t have to,意思是“不必”。另外，must與have to都可以表示“必須”這一含義。must表示一種主觀的需要，而have to表示一種客觀的需要，意思是“不得不”，其否定形式是don’ have to。例如：-What sort of house do you want to have? Something big?--Well, it ______ be big--that's not important.A.mustn't

B.needn't

C.can't

D.won't

【解析】Something big?此處意為：Must it be big? 回答者的意思是：房子不必太大—那并不重要。

【答案】B

(2)must的否定形式mustn’t表示禁止，意思是“不能，不許”。例如： When I was young, I was told that I ______ play with matches

A.wouldn't

B.needn't

C.mustn't

D.daren't 【解析】當(dāng)我年輕的時(shí)候，（家人）就一直告誡我千萬不要玩火柴。【答案】C(3)must用于條件句或疑問句中，可以用來表示責(zé)備、抱怨的感情色彩，意思為“偏要，硬要、干嘛”。例如： ①—May I smoke here ? —If you ____, choose a seat in the smoking section.A.should

B.could

C.may

D.must ②John, look at the time.___________ you play the piano at such a late hour? A．Must

B．Can

C．May

D．Need 【解析】must在這兩道試題中均表示“非得，偏要”。【答案】① D

② A 2.should(1)should應(yīng)該，表示“責(zé)任和義務(wù)”。例如：

According to the air traffic rules, you ___ switch off your mobile phone before boarding.A.may

B.can

C.would

D.should 【解析】should此處表示根據(jù)交通法規(guī)應(yīng)盡的責(zé)任和義務(wù)。【答案】D(2)在虛擬條件句中用以加強(qiáng)假設(shè)語氣，表示“與將來事實(shí)相反的假設(shè)”，用 If+主語+ should +動(dòng)詞原形，當(dāng)“萬一(會(huì))”講。這時(shí)可省略if，將should提到句首，變?yōu)榈寡b句式。請看下面的例子：

If it should rain(=Should it rain)tomorrow, I would stay at home.萬一明天下雨的話，我就待在家里。再如：

________ fired, your health care and other benefits will not be immediately cut off.A.Would you be

B.Should you be

C.Could you be

D.Might you be 【解析】句意：萬一你被解雇，給你的醫(yī)療救助和其它方面的福利也不會(huì)被取消。【答案】B(3)should還可以用來表示說話人對(duì)某事不能理解、趕到意外、驚異等意思，譯為“竟然，竟會(huì)”。例如：

You can’t imagine that a well-behaved gentleman _____ be so rude to a lady.A.might

B.need

C.should

D.would 【解析】句意：你想象不到這么一個(gè)表現(xiàn)良好的紳士竟然會(huì)對(duì)一個(gè)女士這么粗魯。【答案】C 3.shall(1)shall用于第一和第三人稱，常用于疑問句中，用來征求對(duì)方意見。例如： ①—What’s the name? —Khulaifi._________ I spell it for you?

A.Shall

B.Would

C.Can

D.Might 【答案】A

(2)用于第二和第三人稱，表示“命令、威脅、警告、允諾、”等。例如： —Excuse me.But I want to use your computer to type a report.—You _____have my computer if you don’t take care of it.A.shan’t

B.might not

C.needn’t

D.shouldn’t 【解析】shall此處表示“警告”。【答案】A(3)shall也用于宣布法律、規(guī)定的要求。例如： ①—What does the sign over there read? —“No person ________ smoke or carry a lighted cigarette，cigar or pipe in this area.”

A.will

B.may

C.shall

D.must 【解析】禁止吸煙是此處的規(guī)定。【答案】C 4.can(1)can可以用來表示驚異、懷疑、不相信的態(tài)度，主要用于否定句、疑問句或感嘆句中。例如：

How ______ you say that you really understand the whole story if you have only covered only part of the article? A.can

B.must

C.need

D.may 【答案】A(2)can也可以用來表示請求或許可。例如： —Mum, I’ve been studying English since 8 o’clock.______I go out and play with Tom for a while? —No, I’m afraid not.Besides, it’s raining outside now.A.Can’t

B.Wouldn’t

C.May

D.Won’t 【答案】A(3)can可以表達(dá)一般的或永久的能力。be able to也可表達(dá)能力，但常用來表達(dá)在某件事情中所表現(xiàn)出來的能力，尤指克服困難能夠完成某事。例如： ①

If it were not for the fact that she ______ sing, I would invite her to the party.A.couldn’t

B.shouldn’t

C.can’t

D.might not ②

The fire spread through the hotel very quickly but everyone ______ get out.A.had to

B.would

C.could

D.was able to 【答案】C 5.would(1)will與would可表示“意愿；意志 ”。

例如： John promised his doctor he _____ not smoke and he has never smoked ever since.A.might

B.should

C.could

D.would 【解析】根據(jù)promise可知此處是John向醫(yī)生表明自己的意志。【答案】D(2)would表示過去傾向性或習(xí)慣性的動(dòng)作。used to 也有這一用法，但used to即可用來表達(dá)過去的習(xí)慣性的動(dòng)作，也可用來表示過去的狀態(tài)。例如：

① When he was there, he ___ go to that coffee shop at the corner after work every day.A.would

B.should

C.had better

D.might ② In my opinion, life in the twenty-first century is much easier than ________.A.that used to be

B.it is used to

C.it was used to

D.it used to be 【解析】第一題would指過去習(xí)慣性的動(dòng)作；第二題it 替代life, used to be 指過去的樣子。【答案】A D

第三篇：情態(tài)動(dòng)詞教案

情態(tài)動(dòng)詞

【考綱解讀】

情態(tài)動(dòng)詞與虛擬語氣有千絲萬縷的聯(lián)系，它們往往放在一起考查。在近年高考題中，對(duì)情態(tài)動(dòng)詞的考查幾乎每年都有縱觀近幾年的高考題可以看出，高考對(duì)情態(tài)動(dòng)詞的考查熱點(diǎn)依次是：（1）推測和可能性；（2）“情態(tài)動(dòng)詞+have done”結(jié)構(gòu)表示猜測或表示虛擬語氣；（3）shall, should, can, must表示特定語氣。尤其是對(duì)“情態(tài)動(dòng)詞+have done”結(jié)構(gòu)的考查頻率較高。試題的情景設(shè)置往往生動(dòng)、真實(shí)，但考查的角度趨于細(xì)微化和綜合化，有效信息較為隱蔽，這就決定了情態(tài)動(dòng)詞題是難題之一。情態(tài)動(dòng)詞題每年都考，所以本專題在高考中的重要地位是顯而易見的。因而在復(fù)習(xí)中應(yīng)引起高度重視，且依筆者之見，來年高考中對(duì)情態(tài)動(dòng)詞考查的可能性依然非常大。【知識(shí)要點(diǎn)】

一、情態(tài)動(dòng)詞的語法特征

1.情態(tài)動(dòng)詞不能表示正在發(fā)生或已經(jīng)發(fā)生的事情，只表示期待或估計(jì)某事的發(fā)生。2.情態(tài)動(dòng)詞 除ought 和have 外，后面只能接不帶to 的不定式。3.情態(tài)動(dòng)詞沒有人稱、數(shù)的變化，即情態(tài)動(dòng)詞第三人稱單數(shù)不加-s。4.情態(tài)動(dòng)詞沒有非謂語形式，即沒有不定式，分詞等形式。

二、情態(tài)動(dòng)詞的基本用法 1.比較can 和be able to 1)can could 表示能力；可能(過去時(shí)用could)，只用于現(xiàn)在時(shí)和過去時(shí)(could)。be able to可以用于各種時(shí)態(tài)。

They will be able to tell you the news soon.他很快就能告訴你消息了。2)只用be able to中情況： 位于助動(dòng)詞后； 情態(tài)動(dòng)詞后；

表示過去某時(shí)刻動(dòng)作時(shí)； 用于句首表示條件；

表示成功地做了某事時(shí)，只能用was/were able to，不能用could。He was able to flee Europe before the war broke out.=He managed to flee Europe before the war broke out.戰(zhàn)爭爆發(fā)前，他就逃離歐洲了。

注意：could，在否定，疑問句中表示推測或懷疑。表示提出委婉的請求（注意在回答中不可用could）。

—Could I have the television on? —Yes，you can./No，you can’t.He couldn’t be a bad man.他不大可能是壞人。2.比較may和might

1)表示允許或請求；表示沒有把握的推測；may 放在句首，表示祝愿。May God bless you!愿上帝保佑你！He might be at home.他有可能在家。

注意：might 表示推測時(shí)，不表示時(shí)態(tài)。只是可能性比may 小。

2)may/might as well，后面接不帶to 的不定式，意為“不妨，還是……好”。You may(might)as well tell me the truth.你還是對(duì)我說實(shí)話好。3.比較have to和must

1)兩詞都是“必須”的意思，have to 表示客觀的需要，must 表示說話人主觀上的看法，即主觀上的必要。

My brother was very ill，so I had to call the doctor in the middle of the night.我弟弟病得很厲害，我只得半夜里把醫(yī)生請來。(客觀上需要做這件事)

He said that they must work hard.他說他們必須努力工作。（主觀上要做這件事）

2)have to有人稱、數(shù)、時(shí)態(tài)的變化，而must只有一種形式。

He had to look after his sister yesterday.昨天他不得不照看他的妹妹。3)在否定結(jié)構(gòu)中：

don’t have to 表示“不必”（可以不可以都行）；mustn’t表示“禁止” You don’t have to tell him about it.你不必把此事告訴他。You mustn’t tell him about it.你一定不要把這件事告訴他。4.must表示推測

1)must用在肯定句中表示較有把握的推測，意為“一定”。

2)must表對(duì)現(xiàn)在的狀態(tài)或現(xiàn)在正發(fā)生的事情的推測時(shí)，must 后面通常接系動(dòng)詞be 的原形或行為動(dòng)詞的進(jìn)行式。

You have worked hard all day.You must be tired.你辛苦干一整天，一定累了。（對(duì)現(xiàn)在情況的推測判斷）He must be working in his office.他一定在辦公室工作呢。比較：He must be staying there.他現(xiàn)在肯定在那里。He must stay there.他必須待在那里。

3)must 表示對(duì)已發(fā)生的事情的推測時(shí)，must 要接完成式。I didn’t hear the phone.I must have been asleep.我剛才沒有聽到電話，我想必是睡著了。

4)must表示對(duì)過去某時(shí)正發(fā)生的事情的推測，must 后面要接不定式的完成進(jìn)行式。—Why didn’t you answer my phone call?

—Well，I must have been sleeping，so I didn’t hear it.5)否定推測用can’t。

If Tom didn’t leave here until five o’clock，he can’t be home yet.如果湯姆五點(diǎn)才離開這兒，他此時(shí)一定還未到家。5.表示推測的用法

can，could，may，might，must 皆可表示推測，其用法如下： 1)情態(tài)動(dòng)詞+動(dòng)詞原形

表示對(duì)現(xiàn)在或?qū)淼那闆r的推測，此時(shí)動(dòng)詞通常為系動(dòng)詞。I don’t know where she is，she may be in Wuhan.我不知道她在哪兒，她可能在武漢。2)情態(tài)動(dòng)詞+動(dòng)詞現(xiàn)在進(jìn)行時(shí)

表示對(duì)現(xiàn)在或?qū)碚谶M(jìn)行的情況進(jìn)行推測。

At this moment，our teacher must be correcting our exam papers.這時(shí)，我們老師想必在批改試卷。

3)情態(tài)動(dòng)詞+動(dòng)詞完成時(shí)表示對(duì)過去情況的推測。

We would have finished this work by the end of next December.明年12月底前我們很可能已完成這項(xiàng)工作了。The road is wet.It must have rained last night.地是濕的，昨天晚上一定下雨了。

4)情態(tài)動(dòng)詞+動(dòng)詞的現(xiàn)在完成進(jìn)行時(shí)表示對(duì)過去正在發(fā)生事情的推測。Your mother must have been looking for you.你媽媽一定一直在找你。

5)推測的否定形式，疑問形式用can’t，couldn’t表示。

Mike can’t have found his car，for he came to work by bus this morning.邁克一定還沒有找回他的車，因?yàn)樵缟纤亲财噥砩习嗟摹?/p>

注意：could，might表示推測時(shí)不表示時(shí)態(tài)，其推測的程度不如can，may。6.情態(tài)動(dòng)詞+have+過去分詞

1)may(might)have+done sth.can(could)have+done sth.表示過去，推測過去時(shí)間里可能發(fā)生的事情。

Philip may(might)have been hurt seriously in the car accident.飛利浦在那場車禍中有可能傷的很嚴(yán)重。

2)must have+done sth.對(duì)過去時(shí)間里可能發(fā)生的事情的推測，語氣較強(qiáng)，具有“肯定”“諒必”的意思。

—Linda has gone to work，but her bicycle is still here.—She must have gone by bus.3)ought to have done sth.／should have done sth.本應(yīng)該做某事，而事實(shí)上并沒有做。否定句表示“不該做某事而做了”。

He ought not to have thrown the old clothes away.（事實(shí)上已扔了。）ought to 在語氣上比should 要強(qiáng)。4)needn’t have done sth.本沒必要做某事 I dressed very warmly for the trip，but I needn’t have done so.The weather was hot.那次旅行，我穿的非常暖和，但我本沒有必要那么去做。天太熱了。5)would like to have done sth.本打算做某事

I would like to have read the article，but I was very busy then.我本想讀那本書，但我那時(shí)太忙了。7.should 和ought to

should 和ought to 都為“應(yīng)該”的意思，可用于各種人稱。—Ought he to go?

—Yes.I think he ought to.表示要求，命令時(shí)，語氣由 should（應(yīng)該），had better最好），must（必須）漸強(qiáng)。8.had better表示“最好”

had better 相當(dāng)于一個(gè)助動(dòng)詞，它只有一種形式，它后面要跟動(dòng)詞原形。had better do sth.最好干某事

had better not do sth.最好不干某事

had better have done sth.表示與事實(shí)相反的結(jié)果，意為“本來最好”。9.would rather表示“寧愿” would rather do 寧可干某事

would rather not do 寧可不干某事 would rather...than...寧愿……而不愿

還有would sooner，had rather，had sooner都表示“寧愿”“寧可”的意思。I would rather stay here than go home.=I would stay here rather than go home.我寧可待在這兒也不回家。

10.will和would

1)would like；would like to do=want to 想要，為固定搭配。Would you like to go with me?你想和我一塊兒去嗎？

2)Will you...? Would you like...?表示肯定含義的請求勸說時(shí)，疑問句 中一般用some，而不是any。

Would you like some cake?要蛋糕嗎？

3)否定結(jié)構(gòu)中用will，一般不用would，won’t you是一種委婉語氣。Won’t you sit down?你不坐嗎? 11.情態(tài)動(dòng)詞的回答方式

must和need相同:Yes,...must.No,...needn't/don't have to may和can could相同:Yes,...may/can/could.No,...mustn't/...'d better not/can't.shall:Yes,...can/may.No,...can't.should:Yes,...should.No,...shouldn't.will和would差不多:Yes,...do/will.No,...won't/thanks.典型例題

1）---Could I borrow your dictionary?---Yes,of course,you____.A.might B.will C.can D.should 答案C.could表示委婉的語氣,并不為時(shí)態(tài).答語中of course,表示肯定的語氣,允許某人做某事時(shí),用can和 may來表達(dá),不能用could或might.復(fù)習(xí)：will 與you連用,用來提出要求或下命令.should與you 連用,用來提出勸告.2）---Shall I tell John about it?---No,you ___.I've told him already.A.needn't B.wouldn't C.mustn't D.shouldn't 答案A.needn't 不必,不用.wouldn't 將不,mustn't 禁止、不能.shouldn't 不應(yīng)該.本題為不需要,不必的意思,應(yīng)用needn't.3）---Don't forget to come to my birthday party tomorrow.---______.A.I don't B.I won't C.I can't D.I haven't 答案B.will既可當(dāng)作情態(tài)動(dòng)詞,表請求、建議、也可作為實(shí)義動(dòng)詞表“意愿、意志、決心”,本題表示決心,選B.12.比較need和dare

一、need表示“需要”或“必須”，作情態(tài)動(dòng)詞時(shí)，僅用于否定句或疑問句中，在肯定句中一般用must,have to,ought to，或should代替。多用在否定式或疑問句中.1.Need I attend the meeting tomorrow?

我需要明天參加會(huì)議嗎? 2.You need not hand in the paper this week.這一周你不必交論文。

need 是一個(gè)情態(tài)動(dòng)詞，他的用法完全和其他情態(tài)動(dòng)詞一樣，但 need 還可當(dāng)作實(shí)義動(dòng)詞使用，這時(shí) need 就象其他動(dòng)詞一樣，有第三人稱，單復(fù)數(shù)，后面加帶 to 的動(dòng)詞等特性。1.I need a bike to go to school.我上學(xué)需要一輛自行車。2.Do you need a dictionary? 你需要詞典嗎? 3.She needs a necklace.她需要一條項(xiàng)鏈。

needn't + have + 過去分詞 表示過去做了沒必要做的事情。You needn't have taken it seriously.這件事情你不必太認(rèn)真。

二、Dare表示“敢”，Dare作情態(tài)動(dòng)詞時(shí)，主要用于疑問句、否定句和條件從句中，一般不用在肯定句中。多用在否定或疑問句中。1.The little girl dare not speak in public.小女孩不敢在公眾面前說話。2.Dare you catch the little cat? 你敢抓小貓嗎? dare 除用作情態(tài)動(dòng)詞外，更多的是當(dāng)實(shí)義動(dòng)詞使用，用法同實(shí)義動(dòng)詞一樣，要考慮人稱，單復(fù)數(shù)，時(shí)態(tài)等。

1.Do you dare to walk in the dark? 你敢黑夜走路嗎？

2.He doesn't dare to tell the teacher what happened that day.他不敢告訴老師那天發(fā)生的事。

三、Dare和need常用作實(shí)義動(dòng)詞，有時(shí)態(tài)、人稱和數(shù)的變化，所不同的是，作實(shí)義動(dòng)詞時(shí)，在肯定句中，dare后面通常接帶to的不定式，在否定和疑問句中，dare后面可接帶to或不帶to的不定式。如：

I dare to swim across this river.He does not dare(to)answer.Don't you dare(to)touch it!I wondered he dare(to)say that.He needs to finish it this evening.另外need 的被動(dòng)含義：need，want，require，worth（形容詞）后面接doing，也 可以表示被動(dòng)：need doing=need to be done Shall用于第一人稱,表示征求對(duì)方的意愿.如：What shall we do this evening? 2.Shall用于第一、第三人稱疑問句中,表示說話人征求對(duì)方的意見或向?qū)Ψ秸埵?如：Shall we begin our lesson? When shall he be able to leave the hospital? 3.Shall用于第二、第三人稱,表示說話人給對(duì)方命令、警告、允諾或威脅.如：You shall fail if you don't work harder.（警告）He shall have the book when I finish reading.（允諾）He shall be punished.（威脅）

第四篇：情態(tài)動(dòng)詞教案

情態(tài)動(dòng)詞

1.概念: 情態(tài)動(dòng)詞: 表示說話者的某些觀點(diǎn)或態(tài)度的詞語.如 “能” , “或許” , “必須” , “需要” , “應(yīng)該” 等.2.情態(tài)動(dòng)詞主要有: can, may, must, need, should, … 這些情態(tài)動(dòng)詞后面 + 動(dòng)詞原形.3.用法

① can ⑴ 表示能力,意為”能, 會(huì)”.如:

eg: I can play basketball.我會(huì)打籃球.---Can you play basketball ? 你會(huì)打籃球嗎?---Yes, I can./ No, I can’t.是的, 我會(huì)./ 不, 我不會(huì).⑵ 表示懷疑、猜測，常用 be 連用, 放在否定句和疑問句中。如：

eg: He can’t be in the room.他一定不在房間里.⑶ 表示請求或允許, 多用于口語中, 意為”可以”, 相當(dāng)于 may.如:

eg: You can go now.你現(xiàn)在可以走了.② could ⑴ 是can 的過去式, 表示過去的能力.如:

eg: I could swim when I was a child.當(dāng)我還是一個(gè)小孩子的時(shí)候我就會(huì)游泳了.⑵ couldn’t: “不能” 用could 提問肯定和否定回答分別用 could, 和 couldn’t.如:

eg:---Could you skate last year? 你去年會(huì)滑冰嗎?

---Yes, I could./ No, I couldn’t.是的, 我會(huì)./ 不, 我不會(huì).③ may ⑴ 表示推測, 意為“可能;或許” 用于肯定句中.eg: He may be a teacher.他或許是一個(gè)老師.⑵ 表示請求、許可，意為”可以” 如: eg:---May I borrow your book? 我可以借你的書嗎?

---Yes, you can./ No, you mustn’t.是的, 可以./ 不, 你你禁止借書.注意: 當(dāng)由may 來提問的時(shí)候, 肯定回答我們用Yes, you can.否定回答用 No, you mustn’t.④ must ⑴ 表示“必須、應(yīng)該“；

eg: You must do your homework.你必須做作業(yè).⑵ 表示推測, “一定” 常與be 動(dòng)詞連用.eg: He must be in the classroom.他一定在教室.⑶ must + not = mustn’t 禁止

eg: You mustn’t smoke.禁止吸煙.⑷ must 放于句首提問, 肯定回答Yes, you must.否定回答 No, you needn’t.⑸ must 與 have to 的區(qū)別：

must強(qiáng)調(diào)主觀的看法．

have to 強(qiáng)調(diào)的是客觀因素． eg: I must do my homework.我必須做作業(yè)．（個(gè)人看法）

I have to go home now, because my mother is ill.我不得不回家，因?yàn)槲覌寢尣×耍陀^原因所導(dǎo)致）

⑤ need ⑴ 作情態(tài)動(dòng)詞使用后跟動(dòng)詞原形.You needn’t come here so early.⑵ 作實(shí)義動(dòng)詞使用后接to do, He needs to drink some water.他需要喝些水.變否定句: He doesn’t need to drink any water.變疑問句: Does he need to drink any water? Yes, he does./ No, he doesn’t.⑥ should “應(yīng)該” 一般指應(yīng)盡的某種義務(wù)．

eg: As a student, we should finish our homework.作為一個(gè)學(xué)生，我們應(yīng)該完成作業(yè)．

練習(xí)：

（）1.Mr Wang ______ be in Nanjing now, he went to Beijing only this morning.A.mustn’t

B.may not

C.can’t

D.needn’t（）2.–Must I saty at home, Mum?

--No, you ______.A.needn’t

B.mustn’t

C.don’t

D.may not（）3.–Can you go swimming with us this afternoon?

--Sorry, I can’t.I _____ take care of my little sister at home because my mother is ill.A.can

B.may

C.would

D.have to（）4.–May I go to the cinema, Mum?--Certainly.But you ______ be back by 11 o’clock.A.can

B.may

C.must

D.need（）5.To make our city more beautiful, rubbish ______ into the river.A.needn’t be thrown

B.mustn’t be thrown

C.can’t throw

D.may not throw（）6.–May I go out to play basketball, Dad?--No, you ______.You must finish your homework first.A.mustn’t

B.may not

C.couldn’t

D.needn’t（）7.–Where is Jack, please ?

--He _____ be in the reading room.A.can

B.need

C.would

D.must（）8.–Who is the man over there? Is it Mr Li?

--No, it ______ be him.Mr Li is much taller.A.musn’t

B.may not

C.can’t

D.needn’t

（）9.These books ______ out of the reading room.You have to read them here.A.can’t take

B.must be taken

C.can take

D.mustn’t be taken（）10.–Mum, may I watch TV now?

--Sure, but you ______ help me with my housework first.A.can

B.may

C.must

D.could（）11.The boy said he had to speak English in class, but he ______ speak it after calss.A.could

B.didn’t have to

C.might

D.shouldn’t（）12.–Must we hand in the papers now?

--No, you ______.A.can’t

B.may not

C.mustn’t

D.needn’t（）13.John ______ go there with us tonight, but he isn’t very sure about it.A.must

B.can

C.will

D.may（）14.Even the top students in our class can’t work out this problem.So it ______ be very difficult.A.can

B.may

C.must

D.need（）15.Put on more clothes.You ______ be feeling cold with only a shirt on.A.can

B.could

C.would

D.must（）16.It’s still early.You ______.A.mustn’t hurry

B.wouldn’t hurry

C.may not hurry

D.don’t have to hurry（）17.–May I stop here?

--No, you ______.A.mustn’t

B.might not

C.needn’t

D.won’t（）18.A computer ______ think for itself, it must be told what to do.A.can’t

B.couldn’t

C.may not

D.might not（）19.–Could I borrow your dictionary?

--Yes, of course you _______.A.might

B.will

C.can

D.should（）20.Peter ______ come with us tonight, but he isn’t very sure yet.A.must

B.may

C.can

D.will（）21.Michael ______ be a policeman, for he’s much too short.A.needn’t

B.can’t

C.should

D.may（）22.______ I know your name?

A.May

B.Will

C.Shall

D.Must（）23.You ______ be more careful next time.A.have to

B.may

C.must

D.might（）24.You ______ miss the lesson, though we ______ have it on Thursday.A.mustn’t;needn’t

B.needn’t;mustn’t

C.mustn’t;mustn’t

D.needn’t;needn’t（）25.This pen looks like mine, yet it isn’t.whose ______ it be?

A.must

B.may

C.would

D.can（）26.What kinds of homes will we live in the future? Nobody ______ be sure, but scientists are working out new ideas now.A.will

B.may

C.can

D.must（）27.I ______ like to know where you were born.A.shall

B.should

C.do

D.may（）28.______ you be happy!

A.Might

B.Must

C.Wish

D.May（）29.A teacher ______ do every exercise, but a student must.A.may not

B.needn’t

C.can’t

D.mustn’t（）30.The matter ______ be changed into a gas, but it _______ be heated to its boiling point.A.may;needn’t

B.may;can

C.mustn’t;needn’t

D.can;must（）31.Teachers and students ______ look coldly at you for a day or two, but there are friendly feelings in their hearts.A.must

B.can

C.may

D.should（）32.Cars and buses ______ stop when the traffic lights turn red.A.can

B.need

C.may

D.must（）33.–Do you think his story ______ true?--I don’ think so.But it sounds good.A.must be

B.may be

C.can be

D.has to be（）34.Look out!The knife is very sharp.You ______ cut your finger.A.need

B.must

C.should

D.may（）35.–How long ______ the book be kept?

--For two weeks, but you ______ return it on time.A.can;may

B.may;need

C.can;must

D.must;need（）36.– May I have an apple, Mum?

--Certainly.But you ______ wash your hands first?

A.may

B.must

C.can

D.need（）37.–There is a lot of smoke coming out of the teaching building there.--Really? It ______ be a fire, most probably.A.can

B.ought to

C.may

D.must（）38.–Shall I tell John about the bad news?

--No, you ______.I think that will make him sad.A.needn’t

B.wouldn’t

C.shouldn’t

D.mustn’t（）39.–Could I call you by your first name?

--Yes, you ______.A.will

B.could

C.may

D.might（）40.–Let’s go to the cinema, shall we?

--_______.A.No, I can’t

B.Yes, I will

C.Yes, thank you

D.No, we’d better not（）41.--______ the man over there be our new teacher?

--He ______ be, but I’m not sure.A.May;mustn’t

B.Can;may

C.Must;can’t

D.Can;can’t（）42.–Someone is knocking at the door.Who ______ it be?

--It ______ be Tom.He is still in the school.A.can;can’t

B.can;mustn’t

C.might;could

D.might;may（）43.Lily finished _______ the book yesterday.A.read

B.reading

C.to read

D.reads（）44.Susan’s parents have bought a large house with a swimming pool.It _______ be very expensive.A.must

B.can

C.mustn’t

D.can’t（）45.–The room is so dirty._______ we clean it?

--Of course.A.Will

B.Would

C.Do

D.Shall

第五篇：《情態(tài)動(dòng)詞》的用法 教案

《情態(tài)動(dòng)詞的用法》教案

一、教材分析: 這是初中的一個(gè)較重要也有難度的知識(shí)點(diǎn),作為動(dòng)詞中的一類,如何使用情態(tài)動(dòng)詞can(could),must, have to, may(might),shall（should）,will, dare, need, aught to等是本次課程的重點(diǎn)內(nèi)容.教學(xué)內(nèi)容是介紹情態(tài)動(dòng)詞的定義、特點(diǎn)、以及最重要的用法；最后加以練習(xí)進(jìn)行鞏固

二、教學(xué)目標(biāo)：

1.知識(shí)目標(biāo)：要求學(xué)生掌握使用表示猜測的情態(tài)動(dòng)詞.2.能力目標(biāo)：通過引導(dǎo)，讓學(xué)生能夠說出學(xué)會(huì)情態(tài)動(dòng)詞的基本用法，在語境中的意思。3.情感目標(biāo)：讓學(xué)生在學(xué)習(xí)中情態(tài)動(dòng)詞過程中體驗(yàn)英語的生動(dòng)趣味性，引導(dǎo)學(xué)生提高對(duì)英語學(xué)習(xí)的求知欲。

三、教學(xué)重難點(diǎn)

教學(xué)重點(diǎn): 學(xué)會(huì)運(yùn)用情態(tài)動(dòng)詞can(could), must, may，might,shall，should,ought to ,will(would),dare, need, have to等的用法以及各個(gè)相近情態(tài)動(dòng)詞間的區(qū)分.教學(xué)難點(diǎn): 各個(gè)情態(tài)動(dòng)詞的用法區(qū)分.四、教學(xué)方法：

以講解為主，舉例分析。

五、教學(xué)過程

教師：同學(xué)們，我們這節(jié)課要想學(xué)習(xí)的內(nèi)容是情態(tài)動(dòng)詞的用法，那1這個(gè)情態(tài)動(dòng)詞其實(shí)我們對(duì)于我們來說也并不陌生，平時(shí)在句子的運(yùn)用也很多，那么大家告訴我情態(tài)動(dòng)詞有哪些？ 常見的情態(tài)動(dòng)詞有：can(could), must, may，might, shall，should, ought to ,will(would),dare, need, have to（板書）

我們這節(jié)課主要來歸納下它的用法

1、本身具有一定詞意，但不能單獨(dú)作謂語。為什么說情態(tài)動(dòng)詞不能單獨(dú)作謂語呢？

謂語是對(duì)主語動(dòng)作或狀態(tài)的陳述或說明，指出“做什么”“是什么”或是“怎么樣”情態(tài)動(dòng)詞用在行為動(dòng)詞前，表示說話人對(duì)這一動(dòng)作或狀態(tài)的看法或主觀設(shè)想。（舉例：i can wash clothes）

2、無人稱和數(shù)的變化

We must stay here.我們必須待在這兒。He must stay here.他必須待在這兒。

3、情態(tài)動(dòng)詞后面緊跟的一個(gè)動(dòng)詞用原形

She may lose her way.她可能迷路了。

4、否定形式直接在后面加no

下面我們開始逐個(gè)學(xué)習(xí)它們的用法 [1] 首先是can/could的用法 A.表能力

can 表示現(xiàn)在的能力，could 表示過去的能力，要表示將來具備的能力通常 be able to 的將來時(shí)態(tài)。B.can和could 表允許，請求

表示請求或者允許時(shí)，兩者均可用，但用could 語氣更委婉更為禮貌些； Can [Could] I come in?（允許）

Can（could）you help me？（請求）

若是自己允許別人做某事，一般只用 can，而不用 could。如： Can [Could] I come in? 我可以進(jìn)來嗎 “Could [Can] I use your pen? ”“Yes,of course you can.”

C.can和could 表推測

對(duì)現(xiàn)在或?qū)淼耐茰y，兩者均可用，但can 通常只用于否定句或疑問句中，一般不用于肯定句，而could則可用于肯定句、否定句和疑問句；對(duì)過去的推測，應(yīng)在can,could之后接動(dòng)詞的完成式，且此時(shí)can仍只用于否定句或疑問句，不用于肯定句；而could 則可用于各種句型。如：

Can [Could] this be true? 這能是真的嗎

Where can [could] he have gone? 他能到哪里去了呢

She can’t [couldn’t] have left so soon.她不可能走得這么早。She could be at home.她可能在家

[2] must / may / might的用法

這三個(gè)詞常用于推測，在推測方面的用法分為四種情況。A.對(duì)將來情況的推測，用“情態(tài)動(dòng)詞 + 動(dòng)詞原形”。(1)．She must / may / might arrive before 5.5:00前她一定/可能/也許到。

B.對(duì)現(xiàn)在進(jìn)行時(shí)的推測，用“情態(tài)動(dòng)詞 + be”，“情態(tài)動(dòng)詞 +be doing”

e.g:(1)．He must / may / might be listening to the radio now.他一定/可能/也許正在聽收音機(jī)。

(2)．He may(might)not be at home at this time.這個(gè)時(shí)候他不可能/可能不在家。

C.對(duì)一般情況的推測，或“情態(tài)動(dòng)詞 + 動(dòng)詞原形”。

Everymornning he will sit here and read a newspaper.(每天早上他都會(huì)坐在這兒看報(bào)紙)D．對(duì)過去情況的推測，用“情態(tài)動(dòng)詞 + have +過去分詞”。

e.g:(1)．It must / may / might have rained last night.The ground is wet.地濕了，昨晚肯定/可能/也許下雨了。

[3] shall的用法 A.表征求意見（“好不好”）Shall we go now? B.威脅、警告、命令或根據(jù)規(guī)定有義務(wù)做 You shall leave at once!(威脅、警告)You shall clean theroom，it is your task.（義務(wù)，責(zé)任）C.表規(guī)章、法令、預(yù)言：“必須” 用于所有人稱 Every paasenger shall wait in a line.[4] should /ought to的用法 注：情態(tài)動(dòng)詞 should /ought to表推測時(shí)，意為“想必會(huì)，理應(yīng)??” A.責(zé)任，義務(wù)或要求，有時(shí)表示勸告：

You ought to /should pay more attention to what your lawyer says.B.表示推測和可能性，是“(按理說)應(yīng)該”之意 肯定的語氣沒有must用于推測時(shí)強(qiáng) This pen ought to /should be yours.C.should與“have +過去分詞”連用時(shí)，則又可構(gòu)成虛擬語氣意為 例如：should have done 本應(yīng)該做某事而沒有做 Should’nt have done 本不應(yīng)該做某事卻做了。

[5] Would和will的用法

A．表示請求、建議等，would比will委婉客氣。如： Would you pass me the book? B．表示意志、愿望和決心。Will表示現(xiàn)在的意愿，would表示過去的意愿，也可以表示現(xiàn)在的意愿，語較為委婉。如： I will never do that again.Yesterday he would’nt helped me.I would like a cup of tea.C．用“will be”和“will(would)+ have + 過去分詞”的結(jié)構(gòu)表示推測，前者表示對(duì)目前情況的推測，后者表示對(duì)已經(jīng)完成的動(dòng)作或事態(tài)的推測。如： This will be the book you want.He will have arrived by now.D．will表示習(xí)慣、請求，固有性質(zhì)等。

Everyday he will sit here hour after hour doing nothing.（習(xí)慣）Will you help me with my English?（請求）E．表料想或猜想。如：

It would be about ten when he left home.[6] dare(dared)的用法

Dare作情態(tài)動(dòng)詞時(shí)，主要用于疑問句、否定句和條件從句中，一般不用在肯定句中。如： How dare you say I'm unfair.He daren't speak English before such a crowd,dare he? She dare not say what she thinks.她不敢說她是怎么想的

[7] need的用法

need表示“需要”或“必須”，作情態(tài)動(dòng)詞時(shí)，僅用于否定句或疑問句中，在肯定句中一般用must,haveto,ought to，或should代替。如： You needn’t come so early.— Need I finish the work today? —Yes,you must.注意：needn't + 不定式的完成式“表示本來不必做某事而實(shí)際上做了某事”。如： You needn't have waited for me.[8]must 和haveto的用法

A.must表示的是說話人的主觀看法，而have to則往往強(qiáng)調(diào)客觀需要。如：

The play is not interesting.I really must go now.這部劇沒意思。我真的必須現(xiàn)在就走。B.二者的否定意義不大相同。如： You mustn't go.你可不要去。You don't have to go.你不必去。

C.詢問對(duì)方的意愿時(shí)應(yīng)用must。如：

Must I clean all the room?我一定要打掃整個(gè)房間嗎？Yes,you must.No,you needn’t.教師總結(jié)：這節(jié)課總結(jié)了主要的情態(tài)動(dòng)詞的用法，內(nèi)容較多，給大家5分鐘時(shí)間來消化下，看完后有什么疑問或是哪個(gè)詞的用法不是很清楚就提出來。教師：教大家一個(gè)情態(tài)動(dòng)詞的口訣口訣：動(dòng)詞原形接后面，說話語氣較委婉。can “能力”may“許可”，must“責(zé)任”或“義務(wù)”。否定回答needn’t換，“需要”need, dare“敢”。should“應(yīng)該”，would“愿”，have to“被迫”表客觀。

3、課堂練習(xí)，復(fù)習(xí)鞏固

教師：我們學(xué)完了情態(tài)動(dòng)詞的用法，下面來做些練習(xí)。

2.Jane have come to the party, but she not find the exact time.A.could;could B.might;could C.should;could D.should;would

3.So many mistakes in your homework!You more careful.A.may be B.had to C.would be D.should have been

4．Her brotherbe at home now, because he was seen playing basketball in the stadium just now.A.mustn’t B.needn’t

C.can’t D.shouldn't

5．---I can’t understand why our boss is late.---He the early bus.A.could miss

B.may have missed

C.can have missed D.might miss