Do you know Peter?Yes,he is my cousin.中没有行为动词,为什么还用Do呢?

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Do you know Peter?Yes,he is my cousin.中没有行为动词,为什么还用Do呢?
Are you like your father?
Yes I don't look like my mother.
为什么还用Are和Don't呢?

know 就是动词.所以用DO.
一般现在时,如果没有Be动词,就需用do或does构成一般疑问句.
be like是像的意思
like 有喜欢和像两种意思.做喜欢时是动词,做像是介词.
look like 是看起来像的意思,因为look是动词,所以要用don't构成否定句.
这些都是一般现在时肯定句,否定句,一般疑问句的结构.多看看老师抄的笔记.还有我上面的回复.不懂再留言问.

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