Question

Be动词例句

Answer 1

It is necessary that he be sent there at once.

有必要马上派他到那里去。

There will be rain in all parts of the country.

全国各地将有雨。

She has been in her room for hours.

她在自己的房间里待了几个小时。

A successful businessman must be aggressive.

一个成功的商人必须有进取心。

be可以和动词不定式连用，有以下几点意义：

①表示计划或安排要发生的事或打算要做的事，不定式可用被动式，在was或were后用不定式的完成式可表示“本来打算”。

②表示“必须”“得”等，意思接近must, have to。

③表示“应该”“宜于”等，意思接近should，有时用来征求对方的意见，不定式可用被动式。

④表示“可以”“能”等，意思接近can, may，多用于被动结构。

Answer 2

如下：

1、The man is a science teacher.

这个男子是一位科学教师。

2、Mary's new dresses are colourful.

玛丽的新衣服色彩鲜艳。

3、I have been there before.

我以前去过那里。

4、My mother is in the kitchen now.

我妈妈现在在厨房里。

Answer 3

一.与人称有关的例句
be动词的意思是“是”，
I am fine, thank you.
Are you fond of the music? be fond of 是：喜欢的意思
He is my teacher.
We are good friends.
二.与时态有关的例句
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.
be动词的意思是“是”，
I am fine, thank you.
Are you fond of the music? be fond of 是：喜欢的意思
He is my teacher.
We are good friends.

Answer 4

“Be”除了原形的“be”之外，还有另外七种形式：am, is, are, been, being, was, were
【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. 这个男子是一位科学教师
2. Mary's new dresses are colourful. 玛丽的新衣服色彩鲜艳
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?
【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.
【be”作助动词时】
【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.
【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.

Answer 5

be动词紧跟在主语后面，I与am搭配，you/we/they等复数的主语（比如my parents lily and lucy)与are搭配〔you不管翻译成“你”还是“你们”都与are搭配〕，he/she/it等单三人称（比如 Mr.lee Jack)作主语时，谓语用is

eg:

I am a student.〔后加名词〕

You are playing computer.〔后加动词〕

He/Lucy is sad.〔后加形容词〕