第一篇：英語中的連系動詞用法

英語中的連系動詞用法

一、連系動詞基本用法

連系動詞是表示不完全謂語關系的動詞，它與其后的表語一起構成謂語。常見的連系動詞有be(是)，become(成為)，get(變成)，remain(還是)，seem(似乎是)，look(看上去)，feel(感覺)等。連系動詞后的表語通常是名詞和形容詞，有時也可以是代詞、數詞、副詞、介詞短語、不定式、動名詞、從句等：

His English is excellent.他的英語很棒。(跟形容詞)

He is a famous poet.他是著名詩人。(跟名詞)

Money isn’t everything．金錢不是一切。(跟代詞)

She was the first to arrive．她是第一個到達的人。(跟數詞)

Who is upstairs? 誰在樓上？(跟副詞)

He is with his friends.他和朋友在一起。(跟介詞短語)

He seems to be ill.他似乎病了。(跟不定式)

Seeing is believing.眼見為實。(跟動名詞)

This is what you need.這就是你需要的。(跟從句)

二、學習連系動詞應注意的兩點

1.關于連系動詞后接副詞作表語

連系動詞后通常可接形容詞作表語，一般不接副詞：

誤：His English is very well.他的英語很好。(應將well改為good)

誤：Be carefully.小心點。(應將carefully改為careful)

誤：The soup tastes nicely.這湯味道不錯。(應將nicely改為nice)

但是，有時連系動詞后也可接副詞作表語，不過這主要限于in, on, off, out, away, behind, up, down, over, through, around, round, below, inside, outside 等少數副詞小品詞以及here, there, upstairs, downstairs等少數表示地點或方位的副詞：

Mother wasn’t in last night.母親昨晚不在家。

The meeting was over at five.會議五點結束。

Come along.The taxi is outside.來吧，出租車在外面。

Mother is downstairs waiting for you.母親在樓下等你。

2.關于連系動詞后接不定式

(1)連系動詞be后根據情況可自由地接不定式作表語：

My dream is to be a scientist.我的夢想是當一名科學家。

All I could do was to wait.我只能等。

My plan was to go from London to Paris.我計劃從倫敦去巴黎。

I was to have seen Mr.Kay.我本要去見凱先生的。

(2)seem, appear, prove, continue, turn out, get, grow, come 等連系動詞后也可接不定式(尤其是to be)作表語：

She always seems to be sad.她常常顯得很憂傷。

My advice proved to be wrong.我的意見證明是錯的。

She appears to have many friends.他好像有很多朋友。

The weather turned out to be fine.天氣結果很好。

Circumstances continue to be favorable.情況仍然是有利的。

He has grown to like studying English.他漸漸喜歡學英語了。

【注】若所接不定式為to be，通常可以省略。不過，若其后接的是表語形容詞，則to be通常不宜省略。另外，連系動詞look后能否接to be似乎尚有爭論，不過，在現代英語中接to be的現象已較普遍。

(3)sound, smell, feel, taste, become等連系動詞后通常不能接不定式：

誤：These oranges taste to be good.(應去掉to be)

誤：The roses smell to be nice.(應去掉to be)

(4)有的連系動詞后接的從句可用不定式來改寫：

It seems that she’s right./ She seems to be right.她似乎是對的。

It appears that you have made a mistake./ You appear to have made a mistake.似乎你弄錯了。

英語連系動詞的分類

(1)狀態系動詞：只有be一詞。如：

She is always like that.她總是那樣。

I am used to going about alone.我習慣于獨來獨往。

These shoes are too tight for me.這雙鞋我穿太小。

(2)持續系動詞：表示主語繼續或保持一種狀況或態度，主要有keep, remain, stay, rest, lie, stand。如：

I hope you’ll keep fit.我希望你身體好。

He always kept silent at meeting.他開會時總保持沉默。

The door remained closed.門仍然關著。

We can remain friends.我們可以繼續做朋友。

Please stay seated.請繼續坐著。

He stayed single.他仍然是單身。

(3)表像系動詞：表示“看起來好像”，主要有seem, appear, look等。如：

He looks tired.他看起來很累。

He seems(to be)quite happy.他好像很快活。

The doctor seemed very capable.那醫生似乎很能干。

He appeared quite well.他顯得身體相當好。

He appeared taken aback.他似乎很吃驚。

She appeared perplexed.她顯得迷惑不解。

(4)感官系動詞：表示“??起來”，有feel(摸起來，感覺), smell(聞起來), sound(聽起來), taste(嘗起來，吃起來)等。如：

This kind of cloth feels very soft.這種布摸起來很軟。

He looks honest, but actually he’s a rogue.他看起來很老實，實際他是一個壞蛋。They all look alike to me.他們的模樣我看起來都一樣。

Everybody feels contented.每個人都感到很滿足。

Ice feels cold.冰感覺起來是涼的。

Silk feels soft and smooth.絲綢摸起來很柔軟平滑。

It sounds a good idea.這聽起來是個好主意。

This food tastes good.這菜好吃。

【注意】：由于英語的系動詞均“不及物”，所以它們不能用于被動語態。但是，值得注意的是，英語中表示感官的系動詞，如feel(摸起來，感覺)，smell(聞起來)，sound(聽起來)，taste(嘗起來，吃起來)等，由于它們按漢語意思理解好像含有被動意義，很容易弄錯。如：

玻璃摸起來是光滑的。

誤：Glass is felt smooth.正：Glass feels smooth.析：漢語說“摸起來”，其實就是指“被摸起來”，似乎含有被動意義，很容易錯用被動語態。

這牛奶聞起來有酸味了。

誤：The milk is smelt sour.正：The milk smells sour.析：漢語說“聞起來”，其實就是指“被聞起來”，似乎含有被動意義，很容易錯用被動語態。

(5)變化系動詞：表示主語變成什么樣，主要有become, grow, turn, fall, get, go, come, run如：

He became mad after that.自那之后，他瘋了。

She had grown thinner and thinner.她越來越瘦了。

His cold was growing worse.他的感冒越來越嚴重了。

She’s growing fat.她正在發胖。

He’s grown used to it.他對此已經習慣。

When she saw this, she turned red.她看到這，臉紅了。

His hair turned grey in a few weeks.在幾個星期中他頭發就變灰白了。

The milk will soon turn sour.牛奶很快就會變酸。

Several people fell ill, victims of blood poisoning.幾個人生病了，都是血中毒的受害者。We get wiser as we get old.隨著年歲的增長，我們也變得聰明些了。

Your hair has gone quite white!你的頭發全白了!

She went pale at the news.聽到這消息，她臉色變得蒼白。

When I mentioned it to him he went red.我對他提及此事時他臉紅了。

He went mad.他瘋了(from)。

The children must not go hungry.孩子們不能挨餓。

(6)終止系動詞：主要有prove, turn out(結果是，證明是)等。如：

His story proved false.他講的情況原來是假的。

His advice proved sound.他的勸告證明是對的。

My intuition turned out to be correct.我的直覺證明是對的。

系動詞可接哪些詞語作表語

連系動詞后的表語通常是名詞和形容詞，有時也可以是代詞、數詞、副詞、介詞短語、不定式、動名詞、從句等。如：

1.用名詞作表語。如：

Translation is an art.翻譯是一種藝術。

Beijing is a beautiful city.北京是一座美麗的城市。

2.用形容詞表作語。如：

Traveling is interesting but tiring.旅行是有趣的，但是使人疲勞。

Every hour and every minute is important.每一小時，每一分鐘，都很寶貴。

3.用代詞作表語。如：

My idea is this.我的想法是這樣的。

Money isn’t everything.金錢不是一切。

His latest play is nothing.他最近出的那個劇本毫無價值。

4.用數詞作表語。如：

Tom is 14.湯姆14歲。

Last check-in time is 20:15.最后檢票時間為20點15分。

The average of letters received each month is 3,000.每月平均收到信件3,000封。

5.用副詞作表語。如：

The secret is out.機密泄漏了。

Sales are down.銷售量下降了。

She is off on Saturday.她星期六不工作。

6.用介詞短語作表語。如：

Dinner is at six.6點鐘開飯。

I hope he is on time.我希望他準時。

Martha still is in hospital.馬撒還在醫院里。

Diana was with the children.戴安娜和孩子們在一起。

You look like your sister.你模樣像你姐姐。

7.用不定式作表語。如：

His goal is to be a doctor.他的目標是當醫生。

My duty is to protect my sisters.我的職責是保護我的妹妹們。My advice to you is to speak the truth.我對你的忠告是講真話。My dream is to travel around the world.我的夢想是環游世界。

8.用動名詞作表語。如：

Her hobby is growing roses.她的愛好是種植玫瑰。

His job is looking after sheep.他的任務是看羊。

My favorite sport is swimming.我最喜歡的運動是游泳。

9.用從句作表語。如：

That’s what we are here for.我們來這里就為了這個。

The question is how he did it.問題是他是如何做此事的。

That’s where I first met her.那就是我第一次遇見她的地方。

The trouble is that I have lost his address.麻煩的是我把他的地址丟了。

第二篇：虛擬語氣連系動詞

基礎語法小練

虛擬語氣

用所給動詞的適當形式填空：

1.If people ___________________(drive)more slowly, there wouldn’t be so many accidents.2.If you had worked carefully, you ___________________(not make)so many mistakes.3.The boat wouldn’t have drifted away, if we ______________________(tie)it up.4.If I had known you already _________________(have)a typewriter, I ___________________(not, buy)one

for your birthday.5.If he _________________(be)here this afternoon I would go with him.6.If it were to rain tomorrow, the match _________________(put off).7.But for your help, we ____________________(not be)able to finish the work in time.8.If it ___________________(not, be)for the leadership of the Party, we would not have achieved so much.9.I wish I __________________(study)hard while I was young.10.It is about time that fence __________________________(mend).11.My request is that we _____________________(hold)another session to discuss the problem.12.It is strange that the car ________________(break)down at exactly the same place where it

___________________(break)down yesterday.13.The baby smiled as if he ____________________(understand)what his mother ______________(say).14.He talked as if he ________________(do)all the work himself, but in fact Tom and I _________________(do)

most of it.15.If only we _____________________(have)a phone!I’m tired of queuing outside the public phone box.16.-----“Can we come in late tomorrow?”

-----“I’d rather you _____________(come)in on time.”

17.He looks as if he _________________(be)ill for a long time.18.He always talks as though he _____________________(address)a public meeting.19.If a metal ___________________(heat), it will expand.20.I _________________(stay)home if it rains this evening.選擇題：

1.If I _______ you, I’d join the army.A.amB.wasC.wereD.would be

2.“If the sun ______ tomorrow, what would we do?”

A.will not riseB.would not riseC.did not riseD.does not rise

3.If you ______ to see Mary, what would you tell her?

A.areB.will be goingC.mustD.were

4.I would have said “Hello” to him if I ______ your brother.A.could seeB.had seenC.will seeD.will have seen

5.If you had wanted to buy a record, what ________?

A.would you buyB.had you boughtC.would you have boughtD.would you be buying

6.If the tablets had dissolved, John ______.A.would probably dieB.had probably died

C.probably would be diedD.would probably have died

7.________ if you had lost your watch?

A.Hadn’t you been upsetB.Wouldn’t you be upset

C.Weren’t you upsetD.Wouldn’t you have upset

8.-----“I was so sorry to hear about Jack.”

-----“If he had made more friends here, he might ________.”

A.have stayedB.have stayC.stayedD.stay

9.If I had a bike, I ______ it to you yesterday.A.would have lentB.would lend

C.would have lendD.could lend

10.____________, John would not have failed.A.If he has listened to meB.Had he listened to me

C.If he listened to meD.As he listened to me

11.Had Alice been more hardworking, she ________.A.had not failedB.would not have failed

C.would not failD.could not be failed

12.-----“Steve made a reservation already.”

-----“______ he change his mind, he can cancel it.”

A.ShouldB.WouldC.IfD.So

13.I wished it _______ but it did.A.occurred notB.did not accur

C.had not occurredD.would not occur

14.I _______ Professor Jones had taught me this equation.A.believeB.deeply thinkC.wishD.suppose

15.The sun rises in the east and sets in the west, so it seems as if the sun _____ around the earth.A.circlesB.is circlingC.be circlingD.were circling

16.The computer “teacher” was talking with his students as though it ______ a human teacher.A.wasB.wereC.had beenD.be

17.Jane appears as though she _______ the secret.A.knowsB.knewC.has knownD.had known

18.If only she _______ of Aunt Ruth!

A.was not terribly so frightenedB.were not terribly so frightened

C.be not so terribly frightenedD.were not so terribly frightened

連系動詞(20)1.______________ __________________

3.___________/____________ __________/___________ ________________/_______________

5_____________ ______________ _________________ __________________ ________________

7________________________________________________________________________

______________________ _______________________________________________ __________________ Practice：

1.What he said sounds_______.A.nicelyB.pleasantlyC.friendlyD.wonderfully

2.We don’t care if a hunting dog smells _____, but we really don’t want him to smell_____.A.well, wellB.bad, badC.well, badlyD.badly, bad

3.He turned ____ ten years ago but later he became _____.A.a teacher;a doctorB.teacher;doctorC.teacher;a doctorD.a teacher;doctor

4.The dog _____lost yesterday.A.gotB.becameC.turnedD.fall

5.The old man must have ____ mad.A.goneB.turnedC.fallenD.driven

6.I felt ____ that I should leave.A.strongB.stronglyC.to be strongD.very strong

7.—Do you like the material?—Yes, it _____ very soft.A.is feelingB.feltC.feelsD.is felt

8.I am afraid the weather will _____ hot for a few days.A.lastB.be lastedC.stayD.be stayed

9.Although he has taken a lot of medicine, his health _____ poor.A.provesB.remainsC.maintainsD.continues

10.I love to go to the seaside in summer.It _____ good to lie in the sun or swim in the cool sea.A.doesB.feelsC.getsD.makes

11.The cloth that ___________ smooth and soft ___________.A.feels;sells wellB.feels;is well soldC.is felt;sells wellD.is felt;sells good

12.___________ delicious, the food was soon sold out.A.TastedB.Being tastedC.TastingD.To taste

13.Happy birthday, Alice!So you have ____________ twenty-one already.A.becomeB.turnedC.grownD.passed

14.The pilot asked all the passengers on board to remain ___________ as the plane was making a landing.A.seatB.seatingC.seatedD.to be seating

第三篇：be是一個連系動詞

be是一個連系動詞，它有自己不同的形式

現在時：be 進行時：being 過去時：was/were 過去分詞：been

它的后面必須跟形容詞或名詞作表語，與之構成系表結構，充當句子的謂語。

i am a student主語：i 謂語：am a student（系表結構）

being是它的現在進行時態，一般不單獨用，而是用于現在進行時的被動語態。（being+動詞過去分詞）

the bike is being repaired.單車正在被修理中。

it is being finished by him這正在被他完成中。

been是它的過去分詞，也不一般單獨使用，而是用于現在完成時、過去完成時以及需要它的句子。

i have been here for a long time.我已經到這里有一段時間了。

至于你的問題，這與你想表達的意思有關。

你的工作是什么？

what do you do? what is your job? 那么這里選用do和is有什么根據呢？

第一句里面，第二個do是指你做什么，也就是你的工作，就是一個實義動詞。按中文說，what you do已經足夠了。可是英語里面就不行，必須跟一個助動詞，也就是do.這里就有了一個結論：當句子中有動詞時，我們就用助動詞do或是does.如果沒有動詞時，我們就選用is或是are，也就是b“Be”除了原形的“be”之外，還有另外七種形式：am, is, are, been, being, was, were.在句子中，“be”可以是主動詞(The Principal Verb)或助動詞(The Auxiliary Verb).當主動詞時，“be”在性質上屬于接系動詞(The Linking Verb), 后面要有名詞、形容詞、地方副詞或短語作補足語(The Complement)。例如：

1.The man is a science teacher.2.Mary's new dresses are colourful.3.I have been there before.4.Mother is in the kitchen now.這四個都是陳述句，可以變成疑問句，方法簡單，把主語和“be”或助動詞對換位置即可：

5.Is the man a science teacher?

6.Are Mary's new dresses colourful?

7.Have I been there before?

8.Is mother in the kitchen now?

當“be”要在祈使句中出現時，它必須借重助動詞“do”或“don't”之助，如：

9.Don't be silly!

10.Do be obedient!

11.Don't be a fool!

“Be”有兩種縮寫法，如下：

12.He's not...../He isn't....13.You're not...../You aren't...但“am + not”的縮寫法只有一個：

14.I'm not.有人用“ain't”, 但這并不是標準英語。

談過了“be”作主動詞的功能，現在看看“be”作助動詞時，有些什么用法：

1.“Be + 現在分詞”以組成進行式時態(Continuous Tenses)，如：

15.Tony's maid is washing his new car.16.The children are playing in the field.17.Samuel was eating when I came in.18.We have been living here since 1959.2.“Be + 過去分詞”以組成被動語態(The Passive Voice),如：

19.Her money in the drawer was stolen.20.A number of good jobs are taken up byforeigners.21.David studied in Taiwan but has been trained as a language lecturer in America.22.Can all the wonderful birds be found in our Bird Park?

23.The disobedient boy was told to stand out-side the classroom.24.Steps are being taken to reduce traffic con-gestion during peak hours.25.Dishonest students will be immediately dealt with.

第四篇：2017小學英語Be動詞用法練習

小學英語Be動詞用法

一、在下面的短文中填上恰當be動詞。

I ______ a girl.My name _______ Mary.I ______ 12 years old.Here ______ my family photo.Look!These ______ my parents and those _______ my grandparents.This boy ______ my brother.He ________ 15 years old now.That ______ my cat, Mimi.It ______ very lovely.二、在下面的題目中填上恰當的Be動詞。1.I ________ Kitty.2.She _______ a student.3.Jane and Tom _________my friends.4.My sisters _______ tall.5._______ there a table in the room? 6.There _____ some glasses on it.7.There ________many monkeys in the zoo.8.There_________ a beautiful rainbow in the sky.9.I _______ at school now.10.We ________ students.11.They ________ in the zoo.12.Yang Ling ________ ten years old.13.There ________ an apple on the plate.14.There ________ some milk in the glass 15.The cat _______ on the chair.16.There _________some water in the glass.17.There __________ some bread on the table.18.Where ________ your friends? 29.How old __________ you? be動詞用法歌：

我用am,你用are，is連接他，她，它。單數名詞用is，復數名詞全用are。變疑問，往前提，句末問號莫丟棄。變否定，更容易，be后not莫忘記。疑問否定任你變，句首大寫莫遲疑。

練習:

一、用am, is, are 填空

1)I _____

a student.2)You ____ a doctor.3)____she Kitty? 4)_____ you Chinese? 5)He _____ in Shanghai.6)It_____ a car.7)They ____ cars

8)____ your mother in the room? 9)_____your friends in the room? 10)What ____ your name? 11)These _____ buses.12)Those _____oranges.13)Where _____ your mother? 14)How old _____ your sister? 15)Where _____ you ? 照樣子改寫句子 例題：1.I __am___ a boy.you a boy? No, I _am__ not.2.The girl______ Jack’s sister.3.The dog _______ tall and fat.4.Miss Zhang _______ a teacher.5.______ your brother in the classroom? 6.She ______ at home.7.How _______ your father?

8.Mike and Kitty ______ in the zoo.9.This______ my dress.10.They _____ nice flowers.11.That ______ my red skirt.12.The books ______ on the desk.__Are_

13.Here ______ a card for you.14.Here ______ some sweaters for you.15.Who ______ I? 16.Who ______ you? 17.Who ______ she? 18.Who ______ Peter? 用be(is, am,are)動詞的適當形式填空。

1）I ______ a boy.______ you a boy? No, I _____ not.2）The girl______ Jack's sister.3）The dog _______ tall and fat.4）The man with big eyes _______ a teacher.5）______ your brother in the classroom? 6）How _______ your father? 7）Mike and Liu Tao ______ at school.8）Whose dress ______ this? 9）Whose socks ______ they? His.10）Who ______ I? 11）The jeans ______ on the desk.12）Here ______ a scarf for you.13）Here ______ some sweaters for you.14）The black gloves ______ for Su Yang.15）This pair of gloves ______ for Yang Ling.16）The two cups of milk _____ for me.17）Some tea ______ in the glass.18）Gao Shan's shirt _______ over there.19）My sister's name ______Nancy.20）______ David and Helen from England? 21）There ______ a girl in the room.22）There ______ some apples on the tree.23）_______ there any apple juice in the bottle?

24）There _______ some bread on the plate.25）You, he and I ______ from China.26）There _______ a boy, two girls, three men and ten women in the park.一、用be動詞的適當形式填空 1.I _______ at school just now.2.He ________ at the camp last week.3.We ________ students two years ago.4.They ________ on the farm a moment ago.5.Yang Ling ________ eleven years old last year.6.There ________ an apple on the plate yesterday.7.I ______ an English teacher now.8.She _______ happy yesterday.9.They _______ glad to see each other last month.10.Helen and Nancy ________ good friends.11.The little dog _____ two years old this year.12.Look, there ________ lots of grapes here.13.There ________ a sign on the chair last Monday..1、Helen____ a student

2、This _____my book.3、My father______a cook.4、Jack’s friend____in the study.5、Your mother_____ swimming.6、Your sister______in the study.7、Those jackets_______my sister’s.8、That______her dog.9、The cat_______on the desk.10、The books_______under the table.11、His sisters______running.12、This train____for Shanghai.13、The dress______too big.14、This book______for you.15、The waitress______my mother.16、Those grapes________green。17Thechildren________singing.18、Helen and I______in the classroom.19、I _____a doctor.20、______you a nur

系動詞Be(am, is, are)的用法

一、請記住以下口訣：

我用am，你用are，is連著他，她，它； 單數名詞用is，復數名詞全用are。變疑問，往前提，句末問號莫丟棄。變否定，更容易，be后not莫忘記。疑問否定任你變，句首大寫莫遲疑。

二、Be動詞在一般過去時中的變化：

1．am 和is在一般過去時中變為was。（was not = wasn’t）2．are在一般過去時中變為were。（were not = weren’t）3．帶有was或were的句子，其否定、疑問的變化和am,is, are一樣，即否定句在was或were后加not，一般疑問句把was或were調到句首。

一、用am, is, are 填空

1.I ______ a boy.______ you a boy? No, I _____ not.2.The girl______ Jack's sister.3.The dog _______ tall and fat.4.The man with big eyes _______ a teacher.5.______ your brother in the classroom? 6.Where _____ your mother? She ______ at home.7.How _______ your father? 8.Mike and Liu Tao ______ at school.9.Whose dress ______ this? 10.Whose socks ______ they? 11.That ______ my red skirt.12.Who ______ I ? 13.The jeans ______ on the desk.14.Here ______ a scarf for you.15.Here ______ some sweaters for you.16.The two cups of milk _____ for me.17.Some tea ______ in the glass.18.Gao shan's shirt _______ over there.19.My sister's name ______ Nancy.20.This ______ not Wang Fang's pencil.21.______ David and Helen from England? 22.There ______ a girl in the room.23.There ______ some apples on the tree.24._______ there any kites in the classroom? 25._______ there any apple juice in the bottle? 26.There _______ some bread on the plate.27.There _______ a boy, two girls, three men and ten women in the park.28.You, he and I ______ from China.二、用be動詞的適當形式填空

1.I _______ at school just now（剛才）.2.He ________ at the hotel last week.3.We ________ students two years ago.4.They ________ on the farm a moment ago(剛才).5.Yang Ling ________ eleven years old last year.6.There ________ an apple on the plate yesterday.7.There ________ some milk in the fridge on Sunday.8.The phone _______ on the sofa yesterday evening.9.I ______ an English teacher now.10.She _______ happy yesterday.11.They _______ glad to see each other last month.12.Helen and Nancy ________ good friends.13.The little dog _____ two years old this year.14.Look, there ________ lots of grapes here.15.Today _____ the second of June.Yesterday ______ the first of June.It _____ Children’s Day.All the students ______ very excite

第五篇：英語be動詞的用法簡略

Be動詞用法的規律：

一、請記住以下口訣：

我用am，你用are，is連著他，她，它； 單數名詞用is，復數名詞全用are。變疑問，往前提，句末問號莫丟棄。變否定，更容易，be后not莫忘記。疑問否定任你變，句首大寫莫遲疑。

二、Be動詞在一般過去時中的變化：

1．am 和is在一般過去時中變為was。（was not = wasn’t）2．are在一般過去時中變為were。（were not = weren’t）

3．帶有was或were的句子，其否定、疑問的變化和am,is, are一樣，即否定句在was或were后加not，一般疑問句把was或were調到句首

am,is are 都屬于be動詞，be是他們的原型

be動詞的一般現在時有三種形式，即：am, is, are。1.如果主語是第一人稱I（我）時，be動詞用am。如：I am a student.我是一名學生。

I am 還可縮寫成I'm。如：

I'm David.我是大衛。

2.如果主語是you（你，你們）, they（他們，它們，她們）或名詞復數（兩個以上的人或物）時，be動詞必須用are。

如：Are you twelve? 你是十二歲嗎？

Tom and Lily are good friends.湯姆和莉莉是好朋友。

They are at school.他們在學校。

are與主語還可縮寫。如： We are= We're，They are =They're, You are = You're。而are與 not可縮寫成aren't。

如：They aren't students.他們不是學生。但是am與not不能縮寫。

3.如果主語是單數名詞、不可數名詞或單數第三人稱代詞（he, she, it）時，be動詞用is。如:My mother is a teacher.我的媽媽是一名老師。

He is a student.他是一名學生。

is也可與主語縮寫,如: He is = He's, My mother is = My mother's等。但是This is不可縮寫。而is與not可縮寫成 isn't。

如:This isn't a book.這不是一本書。

根據以上敘述我們可以把動詞的用法以口訣的形式表述出來： 我（I）是am, 你（you）是are, 剩下is留給她（she）, 他（he）, 它（it）, 兩個以上都用are。

be動詞am, is, are,如何正確使用它。我用am,你用are, is用于他、她、它。以上主語是單數.復數主語全用are。指示代詞作主語,This, that用is, these, those要用are。若是變為否定句,Not系動詞后面加。若變一般疑問句,句首Am, Is, Are,句末問號莫忘加。回答一般疑問句,Yes,或No簡回答！