心电轴左偏有什么症状:be动词的用法是什么?

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初二英语!!!

be 动词的用法be 动词

am 只能跟在I后面 I am

is 跟在第三人称单数he she 后面 she is he is it is

are 搭配you,单数,复数都用,you are we are they are

含有 be 动词的简单的陈述句,否定句,一般疑问句。

1.陈述句:This is my handbag. 这是我的手提包。

2.否定句:含有 be 动词的句子如果变否定句,就是在 be 动词后面加 not

This is not my handbag. 这不是我的手提包。

3.一般疑问句:含有 be 动词的句子,如果变成一般疑问句,就是把 be 动词提到句子的前面,大写。 Is this my handbag? 这是我的手提包吗?
......

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