1.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.。
2.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。)
3.英语be动词有哪些
有am 、is 、was are、were、being。
1、am,is和are用于不同的人称和数。am用于第一人称单数。例如:I am a teacher.我是一名老师。is用于第三人称单数,没有人和物的区别。
例如:
—Who is he?
—He is Tom's father.
—What's this?
—It is a book.
are用于第二人称单、复数和第一、三人称的复数。例如:You are a student. We are students, too.
2、am,is和are可以帮助构成否定句和疑问句。在am,is或are之后加上not,即将句子变成了否定句;把be动词提到句首,即将句子变成了疑问句。例如:
I'm from China. →I'm not from China. →Are you from China? (对I am的提问比较特别)
He's thirteen years old. →He isn't thirteen years old. →Is he thirteen years old?
They are policemen. →They aren't policemen. →Are they policemen?
看了以上例句,一定要注意am,is和are在句中的缩写形式。另外,am,is,are与this,these,those在一起时一般不缩写。
3、be也可以位于句首,表示向别人提出要求。例如: Be a good student! 做个好学生!
4.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. grow6. 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。
5.be动词具体用法
be是一个连系动词,它有自己不同的形式 现在时:be 进行时:being 过去时:was/were 过去分词:been 它的后面必须跟形容词或名词作表语,与之构成系表结构,充当句子的谓语。
i am a student主语:i 谓语:am a student(系表结构) being是它的现在进行时态,一般不单独用,而是用于现在进行时的被动语态。(being+动词过去分词) the bike is being repaired.单车正在被修理中。
it is being finished by him这正在被他完成中。 been是它的过去分词,也不一般单独使用,而是用于现在完成时、过去完成时以及需要它的句子。
i have been here for a long time.我已经到这里有一段时间了。 至于你的问题,这与你想表达的意思有关。
你的工作是什么? what do you do? what is your job? 那么这里选用do和is有什么根据呢? 第一句里面,第二个do是指你做什么,也就是你的工作,就是一个实义动词。按中文说,what you do已经足够了。
可是英语里面就不行,必须跟一个助动词,也就是do. 这里就有了一个结论:当句子中有动词时,我们就用助动词do或是does.如果没有动词时,我们就选用is或是are,也就是b“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.。
6.be动词的用法~
be动词的用法 be [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 助动词 助动词在有实义动词或叫行为动词的句子中对其进行否定和疑问的时候用,否定句时在其后加not,疑问句时把助动词提到句首,后面用动词原型即可。一般现在时(do/does)、一般过去时(did),一般将来时(will,would/shall,should),现在完成时(have/has),过去完成时(had)等待。
而be动词就是在系表结构中用,be直接就是“是”的意思,如果和实义动词一起的话就有be+动词-ing(进行时态)be+动词过去分词(被动语)。 ↗珊。
7.be动词的用法
be是一个多功能动词,在初级英语里可见四种用法: 功能一,系动词be be为连系动词,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) The twins were very busy yesterday.(一般过去时) It will be sunny tomorrow.(一般将来时) She has been ill for over a week.(现在完成时) 功能二,助动词be 助动词be,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. Young Tom was always asking questions and trying out new ideas. 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) This building was built three years ago.(一般过去时的被动语态) Our classroom has been cleaned and tidied already.(现在完成时的被动语态) How could this kind of cakes be made in your home?(含情态动词的被动语态) That is a day never to be forgotten.(动词不定式的被动语态) 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. I didn't know if she was going to come here. 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. One night an angel came to Mary and told her that she was to have this special boy. 功能三,there be there be句式为:there be+主语部分+状语部分,表示"某处存在某物",be常用现在时,过去时和将来时等。如: Oh, cool! And there are many things to see. There is even a deer park in Sanya. There are about 80 pyramids in Egypt. Will there be a football match in your school next week? 功能四,实义be 可以将be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: His daughter wants to be a doctor for animals in her twenties. Kate's birthday party will be at half past six this evening. Jim has been in China for more than two years, but he has not yet been to Yichang.。
8.be动词怎么用
1. Be动词有三个,am,is还有are.我用am, 你用are, is跟着他她它,复数全部都用are.
如果遇到过去时,was来把am,is替,were来把换掉动词are
2. do和be动词的用法区别
Be 动词就是(am,are,is)..句子中如果没有实意动词(例如:write,buy)之类的动词,就直接在主语后面加Be动词。而如果是句子中有实意动词,那么如果你要改为一般疑问句,就要借助DO(do也称为助动词),例如:I study.
改为一般疑问句:Do you study ?