现在完成时，have 后面接动词的过去分词形式
How long have you known Mr Zhang?为什么不用do而用have?
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相关问题
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How long have you known Ann?
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how long have you been —— this school?为什么不用On 用in?
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how long do you suppose it lasted?为什么用lasted而不用last
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how long have you been colleeting shells?为什么用been
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—How long have Mr. and Mrs. _____?
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---How long have Mr.Mrs.Smith_______
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句子I knew him for a long time为什么不用 have known用knew?
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how long have you been like this中为什么用been
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How long have you been 为什么加suffering from a headache不用suffer
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how long have you been 用法