He is so shy that he has trouble communicating with others.

问题描述:

He is so shy that he has trouble communicating with others.
为什么用communicating
1个回答 分类:英语 2014-12-06

问题解答:

我来补答
have trouble in doing sth固定搭配表示有困难做某事,in可以省略,所以用communicate的ing形式
 
 
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