He didn't leave here until the rain stopped.

问题描述:

He didn't leave here until the rain stopped.
在这句话中为什么用leave 而不用left?
1个回答 分类:英语 2014-11-27

问题解答:

我来补答
用了助动词的情况下,动词都会还原为原形.在否定句和疑问句里常用.
 
 
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