题目内容
17.We use pencil-boxesto keep (keeping/to keep) pencils and rulers.分析 我们用铅笔盒存铅笔和尺子.
解答 答案:to keep.根据题意可知,keep pencils and rulers是对pencil-boxes用途的补充,在句子中作宾语补足语,应用动词不定式.再根据use sth.to do(用某物做某事)是固定用法可知,本题选to keep.
点评 做本题时,需要注意动词不定式的用法,并要结合一些固定用法加以选择.
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