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,being,been,to be.那么，它们的具体用法是什么呢?下面是英语be动词用法总结，大家一起来看看吧!
英语be动词用法总结:
第一，be动词都有:am/is/are/was/were。都表示“是”的意思，在句子中充当谓语动词的成分。
第二，在一般现在时中，当主语是第一人称的时候，谓语动词可以用am。比如:I am a boy.我是一个男生。
第三，在一般现在时中，当主语是第三人称he/she/it，又或者是名词单数的时候，后面的谓语动词可以是is。比如:He is a student.他是一个学生。The apple is red.这个苹果是红色的。
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第四，在一般现在时中，当主语是they/we，又或者是名词复数时，后面的谓语动词可以是are。比如; We are good friends.我们是好朋友。The trees are tall.这些树是高的。
第五，在一般过去时中，当主语是it/he/she/I/名词单数时，谓语动词可以用was，不然就用were。比如:It was red dog.它是一只红色的狗。They were very happy.他们很高兴。
there be 句式的语法要点:
一、概说
英语中的there be结构主要表示某处存在有某物，所以通常被称为存在句。其中的there为引导词，无词义，be为谓语动词，there be后面的名词为句子主语。
二、there be结构的主谓一致问题
在there be句型中，若句子只有一个主语，谓语的数则取决于该主语的数;若有几个主语并列，则通常是与靠近的主语保持一致。如:
There is no cause for anxiety. 不必焦虑。
There is some dirt on your coat. 你的外套上有灰尘。
There are twenty children present. 在座的有20个孩子。
There is a teacher and some students over there. 那边有一位老师和一些学生。
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三、there be结构的时态问题
there be结构的时态由其中的谓语动词be来体现，它可以有一般现在时、一般将来时、一般过去时、现在完成时以及过去完成时等多种时态形式。如:
There will be a rise in unemployment next year. 明年失业人数将会增加。
There have been a series of car accidents at the crossing. 在这个交叉路口已发生了一连串的车祸。
There had been two sea fights between them. 他们之间发生了两场海战。
四、there be结构与情态动词连用
there be结构有时可以与情态动词连用。如:
There may be an opportunity for you to see the premier. 你可能有机会见到总理。
There must be something wrong with my left arm, which is asleep.我的左臂发麻，一定出什么问题了。
There used to be a lot of troubles in that region. 那个地区过去动乱不断。
五、there be结构的非谓语形式
there be结构的非谓语形式有两种基本结构，即there being和there to be。一般说来，there being结构主要用作状语或介词宾语;There to be 结构主要用作动词宾语。如:
There being no further business, I declared the meeting closed. 没有更进一步的情况(讨论)，我就宣布闭会。
There is now some hope of there being a settlement of the dispute. 现在有点希望可以解决这次争端。
We expect there to be more discussion about this. 我们期望能对此展开更多的讨论。
注:用作介词宾语一般用there being，但用作介词for的宾语时，只能用there to be。比较:
They planned on there being another meeting. 他们打算再开一次会议。
They planned for there to be another meeting. 他们打算再开一次会议。
There be句式的特殊用法:
▲ 英语中的 There，除了表示地点“在那里”外，还有一个非常重要的用法，就是:充当引导词的角色，同时，引起句子结构上的倒装。具体表现在:
1. There be 存在句:——最原始最典型的倒装
谈到倒装句，人们都不陌生，认为它是一个很重要的句式。其实，在一个人刚刚开始学英语的时候，就已经学到了真正意义上的倒装句:There be 句型。
There is a book on the desk. 去掉引导词 There，原来的倒装句则变成:A book is on the desk.
What is there on the desk? 实际等于说:What is on the desk?
There be是倒装句，表存在，不必细说。
2. There + 不及物动词 + 主语:——最常见的倒装
There lived an man in the forest long ago. 很久以前，森林中住着一位老人。
There stands a temple on the top of the mountain. 山顶上有一座庙。
There goes the bell. Let’s have our class. 铃声响了，我们上课吧。
最后一句 There goes the bell. There 除了引起句子结构的倒装外，还提醒听者注意。
3. “There + be + 过去分词 + 主语” 和“There + be + 过去分词 + 主语”——最特殊的倒装
▲“There + be + 过去分词 + 主语”，其实是被动语态的变式，去掉引导词 There，还原本来面目。现在，我直接使用网友的句子为例:
There are now published millions of books very year in China .
等于:Millions of books are now published very year in China.
On the following day, there was held a splendid banquet.
等于:On the following day, a splendid banquet was held.
There was shown at the exhibition an electronic computer made in Shanghai .
等于:An electronic computer made in Shanghai was shown at the exhibition.
▲“There + be + 现在分词 + 主语”，其实是不及物动词进行时态的变式，去掉引导词There，还原本来面目。现在，我直接使用网友的句子为例:
There were running in the garden a group of children aged from seven to twelve.
等于:A group of children aged from seven to twelve were running in the garden.
【我的观点】任何事物的出现都是有原因的，语言现象亦然。我认为，there 的上述用法，体现了语言的3个方面。概括起来，不外乎以下几个原因:
1. 语用方面:There 置于句首，具有提示、提醒作用。如:There goes the bell. Let’s have our class.
2. 修辞方面:There 置于句首，旨在使句子匀称。如:There was shown at the exhibition an electronic computer made in Shanghai.
若说:An electronic computer made in Shanghai was shown at the exhibition. 会显得头重脚轻。
3. 语法方面:There 置于句首，改变句子的正常结构。去掉引导词 There 之后，变成正常语序，以上三种情况的例句，分别为:
(1) There is a book on the desk. → A book is on the desk.
(2) There lived an old man in the forest long ago. → An old man lived in the forest long ago.
(3) There are now published millions of books very year in China . → Millions of books are now published very year in China.
【说明】There置于句首，如果没有实际词汇意义，往往引起句子结构的倒装。如果有实际词汇意义(“在那里”)，则不然。试比较:
There stands a temple on the top of the mountain. (There 没有实际意义)
There I saw my old friend Tom. (There表示“在那里”)
有关there be结构的若干句式:
■There is no / some / much / little difficulty / trouble with sth. 做某事(没) 有困难。如:
(1) There is some difficulty with the text. 这篇课文还有点困难。
(2) There is little trouble with the matter. 这件事情没有什么麻烦。
■There is no / some / little / much difficulty / trouble in + doing. 做某事有困难。如:
(1) There is much difficulty in finishing the work in the given time. 在规定的时间内完成这项工作还很困难。
(2) There is no trouble in reading the article without a dictionary. 即使不用词典读这篇文章也不难。
■There is no doubt about / of sth. 毫无疑问…。如:
(1) There is no doubt about his coming here. 毫无疑问，他会来。
(2) There is no doubt of his words. 对他的话毋庸置疑。
■There is no doubt that –clause. 毫无疑问…。如:
(1) There is no doubt that he has made great progress this year. 毫无疑问，他今年进了大步。
(2) There is no doubt that he likes hunting. 毫无疑问，他喜欢狩猎。
■There is no hurry (+ to do sth) 不用急于干某事。如:
(1) There is no hurry to leave, for it is early. 天还早，不要急于离开。
(2) There is no hurry to answer this question, but use your head. 动动脑筋，不要急于回答这个问题。
■There is no need for (sb. to do ) sth. 没有必要怎么样。如:
(1) There is no need for him to go there. 她没有必要去那儿。
(2) There is no need for such a meeting. 没有必要开这样的会议。
■There is no question about sth. 毫无疑问…。如:
(1) There is no question about his arrangement. 对他的安排毋庸置疑。
(2) There is no question about what he said. 对他的话毋庸置疑。
■There is no question of doing sth. 毫无疑问…。如:
(1) There is no question of his leaving for holiday. 他肯定去度假了。
(2) There is no question of his inviting us to his party. 他肯定会邀请我们去参加他的聚会。
■There is no sense in doing sth. 做某事没有道理或说不过去。如:
(1) There is no sense in forcing him to do what he doesn’t like to. 强迫他做他不喜欢做的事情没有道理。
(2) There is no sense in leaving him alone when he is in trouble. 当他遇到困难时，扔下他不管，没有道理。
■There is no point in doing sth. 做某事没有用。如:
(1) There is no point in regretting. 后悔没有用。
(2) There is no point in reasoning with him. 跟他说道理没有用。
■There is no doing sth. 不可能…;无法…。如:
(1) There is no telling who will win the match. 无法断定比赛谁赢。
(2) There is no giving you a reply before deciding it. 在决定前不可能给你答复。
