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。
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