as as 时be动词的用法如题、为什么 例句 he runs as fast as me时候不加be动词哇、

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as as 时be动词的用法如题、为什么 例句 he runs as fast as me时候不加be动词哇、
as as 时be动词的用法
如题、为什么 例句 he runs as fast as me时候不加be动词哇、

as as 时be动词的用法如题、为什么 例句 he runs as fast as me时候不加be动词哇、
fast是副词,副词修饰形容词和动词,但这句是修饰动词,所以不能用be
这里有一些例句,你能看以下哦!
主语+谓语(系动词)+as+形容词原形+as+从句.表示两者对比相同.
This box is as big as mine.
这个盒子和我的一样大.
This coat is as cheap as that one.
这件衣服同那件衣服一样便宜.
I study English as hard as my brother.
我同我兄弟一样学习努力.

1

fast是副词,修饰run,一般现在时有两种结构: 1 be( am, is, are)如: He is as tall as Tom. tall是形容词,动词用be
2.行为动词,He runs as fast as me他和我跑得一样快,就是这种用法,所以不能用be