He did nothing but do homework at home last night.为什么是do

问题描述:

He did nothing but do homework at home last night.为什么是do
1个回答 分类:综合 2014-12-09

问题解答:

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不定式在介词but,except,besides后面时,如果介词之前为do的某种形式,则后接不带to的不定式.
 
 
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