be動詞的形式和用法

1、Be動詞的形式： be, is, am, are, was, were, being, been。

2、be動詞的用法：後面接名詞，形容詞，地點副詞，或短語做補足語。

3、be動詞的否定，在am, is, are, was, were 後面加 not, 縮略式am not, isn't, aren't, wasn't, weren't。