题目内容
Mike didn’t start____the importance of a foreign language till he graduated from school.
A.knowing B.to know C.know D.to have known
B
start后可以接-ing形式或to do,但如果start后面的动词表示心理活动的词时,必须用不定式。
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题目内容
Mike didn’t start____the importance of a foreign language till he graduated from school.
A.knowing B.to know C.know D.to have known
B
start后可以接-ing形式或to do,但如果start后面的动词表示心理活动的词时,必须用不定式。