14.The old man didn’t know _______ when the house caught fire .A.what to do it B.how to do C.how to do it D.what to do 选哪个 为什么
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14.The old man didn’t know _______ when the house caught fire .
A.what to do it B.how to do C.how to do it D.what to do 选哪个 为什么
B 因为这是一个从句,不知道怎么做就是how to do
D不知道做什么
D房子着火了,老人不知怎么办。
A和B成分就不对。A C从语法上讲是正确的。但是语义上讲,it需要前面有一个东西去指代。比如说,老师让每个人做一个小桔灯,我不知道怎么做。可以用 I don't know how to do it, it指小桔灯。C. how to do it 为什么不对 不明白如果想用it,前面总得有个具体的东西指代吧。it指什么啊?用大白话解释就是,what表示不知...
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D房子着火了,老人不知怎么办。
A和B成分就不对。A C从语法上讲是正确的。但是语义上讲,it需要前面有一个东西去指代。比如说,老师让每个人做一个小桔灯,我不知道怎么做。可以用 I don't know how to do it, it指小桔灯。
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D know +what to do,what to do作为宾语从句。A it与what关系重复,B与C是一回事,但是it指的是什么,不太好解释,所以本题的最佳答案是D
选D
因为有两种固定搭配,即what to do和how to do it
在这句话中,意思是这个老人不知道()当屋子着火的时候,显然是去干什么,所以选D
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