be动词，意思和用法很多，根据句子中不同的人称、数和时间，型态，应该选择相应的be动词。下面小编告诉你初中英语语法be动词用法，大家一起来看看吧!
初中英语语法be动词用法:
一、be 动词做助动词
助动词be 有两个基本用法，一是与谓语动词一起构成各种时态，二是构成被动语态。
“be + 现在分词组”成各种进行式时态。例如:
Tony's maid is washing his new car.
The children are playing in the field.
Samuel was eating when I came in.
We have been living here since 1959.
This time next day they will be sitting in the cinema.
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二、注意事项
英语句子中，为了表达时态或被动语态的需要，常常会出现几个助动词连在一块儿使用。也就是说，助动词be会和其它助动词一起使用。这时候，整个句子的一般疑问句和否定句，就不一定是对be 进行变化了，而是以第一个助动词为主进行变化。即哪个助动词在先，就以它为主进行变化。例如:
[肯定句] All the wonderful birds can be found in our Bird Park. (助动词有两个:can be )
[疑问句] Can all the wonderful birds be found in our Bird Park? (移第一个can)
[否定句] All the wonderful birds can not be found in our Bird Park. (在第一个can 后加not)
[肯定句] I have been there before. (两个助动词:have， been )
[疑问句] Have you been there before?
[否定句] I have not been there before.
[肯定句] I shall be having my supper at six tomorrow evening. (两个助动词:shall， be )
[疑问句] Will you be having my supper at six tomorrow evening?
[否定句] I shall not be having my supper at six tomorrow evening.
三、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+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.
3. 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.
四、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?
五、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 birthday party will be at half past six this has been in China for morethan two years, but he has not yet been to Yichang.
there be…的否定式和疑问式:
■there be句式否定式的用法
there be句式的否定式通常应将否定词置于动词be之后:
There is not any bread left. 没有一点面包了。
There isn’t anything I can do for you. 我帮不了你什么忙。
若谓语中包括有助动词或情态动词，通常将否定词置于助动词与情态动词之后:
There can’t be so many mistakes. 不可能有那么多错误。
There shouldn’t be any doubt about it. 对此不应有什么怀疑。
There haven’t been any parties in weeks. 好几个礼拜没开过晚会了。
另外注意以下类型的否定式:
There doesn’t seem to have been any difficulty over the money question. 在钱的问题上似乎没发生什么困难。
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■there be句式疑问式的用法
there be句式的疑问式通常应将否定词置于动词be之后:
Is there any good film on? 映什么好电影吗?
Is there room for me in the car? 车子里还有我坐的地方吗?
Are there any letters for me? 有我的信吗?
若谓语中包括有助动词或情态动词，通常将助动词或情态动词移至句首构成疑问式:
Has there been an accident? 出事了吗?
Have there been any new developments? 有什么新的发展吗?
Can there have been so much rain there?那儿会下过那么多雨吗?
另外注意以下类型的疑问式:
Uncle Jesse, why do there have to be poor people like those? 杰西叔，为什么一定要有他们那样的穷人?
there be的非限定形式:
there be的非限定形式是there to be和there being，主要用来做介词或动词的宾语、主语或状语。如:
Have you ever thought of there being so many interesting films for you to choose from?没想到过有这么多有趣的电影供你选择吧?
John was relying on there being another opportunity. 约翰相信另有机会。
There being a bus stop so near my house is a great advantage. 有公交车停在离我房子这么近的地方是很大的优势。
There having been no rain, the ground was dry. 由于没有下雨，地上很干燥。
It’s unusual for there to be so few people in the street. (=It’s unusual that there are so few people in the street) 这条街上这么少的人是不寻常的。
It was too late for there to be any subways. 太晚了，不会有地铁了。
Would you like there to be a meeting to discuss the problem? 你们要开个会讨论一下这个问题吗?
I don’t want there to be a simple mistake in the article that I have written. 我不想我写的这篇文章中有错误。
I except there to be no argument about this. 我期限望对此事没有争论的。
注:there to be常做like, expect, mean, want, intend, prefer, hate等的复合宾语。
there be句式中动词be的变体:
有时可将there be中的动词be 换为 live, remain, seem, appear, exist, stand, lie, come等:
once upon a time there lived a man known by the name of Joe Beef. 从前有个人名叫乔·比夫。
There seems [appears] something the matter with her. 她好像是出了什么事似的。
There existed different opinions on this problem. 对这个问题曾有不同看法。
There remained just twenty-eight pounds. 只剩28英镑了。
At the top of the hill there stands an old temple. 在小山顶上有一座古庙。