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be动词的含义及用法 be的用法

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be动词的含义及用法 be的用法

be动词是什么意思?什么用法?

be动词意思和用法很多,一般的意思是是,此种用法,有多种变化形式,is,am,are,was,were,bein-g,been,to be.另外,be动词还有成为的意思。

be动词的用法

  be (be/is/are/am/was/were)   [bi:]   vi   现在时 I am, you are, he is, we are, you are, they are (缩略式 I'm, you're, he's, we're, you're, they're), (否定缩略式 I'm not, isn't, aren't), 过去时 I was, you were, he was, we were, you were, they were (过去时否定缩略式 wasn't, weren't), 过去分词 been, 现在分词 being   英语的“be”是个特殊动词;有些语言,如马来文等,并没有“be”这样的动词。   “Be”除了原形的“be”之外,还有另外七种形式:am, is, are, been, being, was, were.   在句子中,“be”可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb)

be动词的用法

一、系动词be

作为系动词(也叫连系动词,link verb)的be,是英语学习者接触最早的用法,而且其用法也很多。其基本含义为“是”,基本用法结构为“主语+be+表语”,也就是我们常说的主系表结构,其中的表语一般都由名词、形容词、数词或表地点、时间等的短语来充当。

系动词be有各种时态的变化,也会和情态动词连用。

(一)be的时态变化

系动词be会有一般现在时、一般过去时、一般将来时、现在完成时、过去完成时等的时态变化。如:

Heisa student.Theywerein the park yesterday.Itwill becloudy tomorrow.Hehas beenill for six days.Ithad beenthree hours before she left the hat shop.

(二)be与情态动词的连用

其用法为:情态动词+系动词be原形。如:

Itmust beLucy's book. Her name is on the cover.Itcan bevery difficult for us to memorize too many words within such a short time.Sheshould behere on time tomorrow.

二、助动词be

作为助动词,be没有具体含义,而是与主要动词一起构成句子的谓语动词。这种情况下,be主要用来构成进行时和被动语态。

(一)进行时态中的be

此时,be可以与主要动词的现在分词一起,构成各种进行时态。如:

Heisreading in the library now. (现在进行时)Shewasswimming in the river this time yesterday. (过去进行时)Theywill bearriving in Beijing tomorrow. (将来进行时)Wehave beenlearning English for ten years. (现在完成进行时)

(二)被动语态中的be

助动词be能够与主要动词的过去分词一起构成被动语态,即be done结构。如:

Chineseiswidely used around the world nowadays.The windowwasbroken by the naughty boy just now.Your watchhasalreadybeenrepaired.

【注意】

助动词be能够构成特殊句型。如:

1、be going to do

be going to do表示“打算或将要”。如:

Heisgoing to visit us next week.Itisgoing to rain soon.

2、be about to do

be about to do表示“刚要,即将”。与be going to do表“将要”不同的是,be about to do表示的是说完话后马上就要去做或是短期内马上就要去做。如:

The planeisabout to take off in five minutes' time.

3、be to do

be to do表示“按计划要做”。如:

One night an angel came to Mary and told her that shewasto have this special boy.The new storeisto be opened tomorrow.

三、特殊句型中的be

(一)There be句型

与上面用法都不同的是,be可以与there一起构成there be句型,用来表示存在。考虑到There be句型较为重要,内容较多,在此不做赘述,后面再找时间跟大家单独分享。今天就先给几个常见的例句。

There isa white ruler on the desk.There werea great many people in the car race last year.

(二)祈使句中的be

这种情况下,句子一般以Be开头或是Don't be开头,表示命令或建议等。如:

Bepatient! (耐心点!)Don't beso hard on me! (不要对我们这么严厉!)

(三)虚拟语气中的be

be有时可以放在句首,引起虚拟语气。如:

Be he rich or poor, she will marry him.Be it true or not, she will see it herself.

此时的be引导的句子其实相当于一个让步状语从句。以上两句话就相当于:

Whether he be rich or poor, she will marry him. (无论他是否有钱,她都会嫁给她。)Whether it be true or not, she will see it herself. (无论这是否是真的,她都会亲自去见证。)

be动词的用法总结

be 动词用法归纳

be是一个多功能动词,现将它的用法归纳如下:

一、系动词be

be可以用作连系动词,中心词义是“是”,句型为“主+系+表”结构。be的形式常用am, is, are(现在式);was, were(过去式);will/can/may/must be(助动词/情态动词+原形);have/has/had been(助动词+过去分词)等。如:

To help animals is helping people. (一般现在时)

帮助动物就是帮助人类。

The twins were very busy yesterday.(一般过去时)

这对双胞胎昨天很忙。

It will be sunny tomorrow.(一般将来时)

明天天气晴朗。

She has been ill for over a week.(现在完成时)

她已经病了一个星期多了。

【注意】有以下三类系动词:

1. “存在”类:表示存在或具有某种特征或状态,这类连系动词强调“存在”。常见的有:be(是),look(看起来),feel(摸上去),seem(似乎是),appear(似乎、显得),prove(证明是),smell(闻起来)taste(尝起来),sound(听起来)等。如:

The story sounds beautiful. 这故事听起来很动听。

Those oranges taste good. 这些桔子尝起来很好。

2. “持续”类:表示某种情况或状态的持续。这类连系动词强调“持续”。常见的有:remain(依然),keep(保持),stay(保持),continue(继续、仍旧),stand(处于某状况或情形)等。如:

Why don't you put the meat in the fridge? It will stay fresh for several days.

你为什么不把肉放到冰箱里呢?它将会保鲜几天。

Please keep quiet in the reading room. 阅览室里请保持安静。

3. “变化”类:表示由一种情况或状态变化成另一种情况或状态。这类连系动词强调“变化”后的情况或状态。常见的有:become(变成),turn(变成),grow(变得), go(变得)等。如:

Put the fish in the fridge, or it will go bad in hot weather.

在热天,把鱼放到冰箱里,否则它要变坏的。

【练习】用be,smell,taste,go,get,become,grow,seem,look,feel,turn的适当形式填空:

1. You very young.

2. At first those questions (看上去)easy, but later I found them difficult.

3. After the sports meeting, he very tired.

4. My younger brother (成为) a student last year.

5. When we up(长大), we're going to help build up our country.

6. The flowers very sweet.

7. Her face (变成)red.

8. Jack very happy.

9. Now the mooncake good.

10. The meat bad yesterday.

【答案】 1. look/are 2. seemed 3. felt/was 4. became 5. grow

6. smell/are 7. turned 8.looks/is 9. tastes/is 10.went/was

二、助动词be

Be可以用作助动词,无词义,辅助主要动词一起在句中作谓语动词。用法如下:

1. be+doing:构成进行时态,有现在和过去两种进行时态。如:

The girls is reading and copying the new words now.

女孩子们现在正在朗读、抄写新单词。

Young Tom was having an English class at this time yesterday morning.

小汤姆昨天这个时候正在上英语课。

2. be+done:构成被动语态(主语是动作的承受者,done必须是及物动词)。如:

Tea is grown in my hometown.(一般现在时的被动语态)

我们家乡种茶叶。

This building was built three years ago.(一般过去时的被动语态)

这幢楼是三年前造的。

Our classroom has been cleaned and tidied already.(现在完成时的被动语态)

我们的教室已经打扫、整理过了。

How could this kind of cakes be made in your home?(含情态动词的被动语态)

这种蛋糕怎么能在你家里制作呢?

That is a day never to be forgotten.(动词不定式的被动语态)

那是永远无法忘记的一天。

3. be+going to do,表示“打算或将要做某事”,be有现在和过去两种形式。如:

We are going to plant trees in the park tomorrow.

明天我们将到公园里去种树。

I didn't know if she was going to come here.

我不知道她是否到这里来。

4. be+to do,表示“按计划安排将要做某事”。如:

The new shop is not to be opened till next Monday.

这家新店将要到下周一才开业。

One night an angel came to Mary and told her that she was to have this special boy.

一天晚上,一个天使到玛丽那里并告诉她将诞生一个特殊的婴儿。

【练习】翻译下列句子

1. 他们现在正在开会。They a meeting now.

2. 如今英语越来越重要了。English more and more important these days.

3. 窗户是汤姆打碎的。The window by Tom last week.

4. 世界各地都教英语。English all over the world.

5. 他下周要去纽约。He New York next week.

6. 我们要教新的学生。We the new students.

7. 他们昨天这个时候正在开会。They a meeting at this time yesterday.

8. 明天我们将到公园里去种树吗? we trees in the park tomorrow?

【答案】1.are having 2. is becoming 3.was broken 4.is taught

5.is to go to 6.are to teach 7.were having 8.Are, going to plant

三、there be句型

Bbe可以用在there be 句型中。there be句式为:there be+主语部分+状语部分,表示“某处存在某物”,有现在时、过去时和将来时等时态。如:

Oh, cool! And there are many things to see. There is even a deer park in Sanya.

哦,真酷!三亚有许多可看的东西,那儿甚至有一个鹿园。

There are about 80 goats on the top of the hill.

山顶上大约有八十只山羊。

Will there be a football match in your school next week?

下周你们学校将有一场足球赛吗?

【练习】用there be句型的适当形式填空

1. There a girl in the room now.

2. Look, there some apples on the tree.

3. there any kites in the classroom yesterday afternoon?

4. there any apple juice in the bottle?

5. There some bread on the plate.

6. There a boy, two girls, three men and ten women in the park at this time.

7. there a robot(机器人)in your factory in the near future(不久的将来)?

8. There two girls, a boy, three men and ten women in the park at this time.

【答案】1.is 2. are 3. Were 4. Is

5.is 6.is 7. Will, be 8. are

四、实义动词be

Be可以视为实义动词,因为它具有实际的词义,如“成为;做;发生;举行;逗留;到达”等。如:

I am a student now. (be+名词)

我现在是一个学生了。

This small bag is red. (be+形容词)

这个小小的包是红色的。

My little daughter was seven years old last year. (be+数词)

我的小女儿去年是七岁。

Whose socks are they? (be+代词)

这些袜子是谁的?

Your mother and father were both at home yesterday evening. (be+介词短语)

昨天晚上,你的爸爸和妈妈都在家。

My dream is to be a doctor. (be+不定式短语)

我的梦想是成为一名医生。

My dream is that I can be a doctor. (be+表语从句)

我的梦想是我能成为一名医生。

【练习】用be动词的适当形式填空

1. I a boy. you a boy? No, I not.

2. Look, this dog tall and fat.

3. The man with big eyes a teacher now.

4. Mike and Liu Tao at school the day before yesterday.

5. The two cups of milk for me.

6.The coat on the desk just now.

7. This pair of gloves for Yang Ling.

8. You, he and I from China.

9. Some cups of water on the table now.

10. Reading books and doing sports good for you.

【答案】1.am, Are, am 2. is 3. is 4. were 5. are

6.was 7.is 8. are 9. are 10. are

be动词的作用及用法是什么???

be动词的用法

英语的“be”是个特别动词;有些语言,如中文和马来文,并没有“be”这样的动词。

“Be”除了原形的“be”之外,还有另外七种形式:am, is, are, been, being, was, were.

在句子中,“be”可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb).

当主动词时,“be”在性质上属于接系动词(The Linking Verb), 后面要有名词、形容词、地方副词或短语作补足语(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.

这四个都是陈述句,可以变成疑问句,方法简单,把主语和“be”或助动词对换位置即可:

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?

当“be”要在祈使句中出现时,它必须借重助动词“do”或“don't”之助,如:

9. Don't be silly!

10. Do be obedient!

11. Don't be a fool!

“Be”有两种缩写法,如下:

12. He's not...../He isn't....

13. You're not...../You aren't...

但“am + not”的缩写法只有一个:

14. I'm not.

有人用“ain't”, 但这并不是标准英语。

谈过了“be”作主动词的功能,现在看看“be”作助动词时,有些什么用法:

1.“Be + 现在分词”以组成进行式时态(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 + 过去分词”以组成被动语态(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.

be动词的用法

be动词的一般现在时有三种形式,即:am, is, are。

1. 如果主语是第一人称I(我)时,be动词用am。

如:I am a student. 我是一名学生。

I am 还可缩写成I'm。如:

I'm David. 我是大卫。

2. 如果主语是you (你,你们), they (他们,它们,她们)或名词复数 (两个以上的人或物)时,be动词必须用are。

如:Are you twelve? 你是十二岁吗?

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

They are at school. 他们在学校。

are与主语还可缩写。如: We are= We're, They are =They're, You are = You're。而are与 not可缩写成aren't。

如:They aren't students. 他们不是学生。但是am与not不能缩写。

3. 如果主语是单数名词、不可数名词或单数第三人称代词(he, she, it)时,be动词用is。

如:My mother is a teacher. 我的妈妈是一名老师。

He is a student. 他是一名学生。

is也可与主语缩写,如: He is = He's, My mother is = My mother's等。但是This is不可缩写。而is与not可缩写成 isn't。

如:This isn't a book. 这不是一本书。

根据以上叙述我们可以把动词的用法以口诀的形式表述出来:

我(I)是am,

你(you)是are,

剩下is留给她(she), 他(he), 它(it),

两个以上都用are。

[思路分析]

be作助动词用的形式如下:

①am, is, are, was, were

②助动词+be:shall be, will be, can be, etc.

③have/has/had + been(完成时)

④am, is, …being(进行时)

[解题过程]

(1)表达进行时态

句型 be + V-ing…(进行时态)

例:What are you reading?

(你正在阅读什么?)

I am reading a magazine.

(我正在阅读杂志。)

例:He will be taking a walk in the park at this time tomorrow morning.

(明天早晨此时他将会正在公园散步。)

例:She has been teaching English in our school for years.

(她已在我们学校教英语许多年了。)

解说 第一例句是表达现在进行时,第二例句是将来进行时,第三例句是现在完成进行时。

(2)表达被动语态

句型 be +p.p. …(被动语态)

例:English is spoken in both Canada and the United States.

(加拿大和美国都讲英语。)

例:Those keys were found in your drawer.

(那些钥匙是在你的抽屉里找到的。)

例:It can be done much faster in this way.

(这件工作用这个方法可以更加快速地做好。)

TAG: 用法