问题描述： " what is happening?" she asked.为什么是is happening. 1个回答 分类：英语 2014-10-11 问题解答： 我来补答 你好.用" what is happening?",说明she对正在发生的事情感兴趣,尽管she也可以说“what has happened?”-------这说明she对已经发生的事情感兴趣.1 what is happening = what is going on 2 what has happened = what do you know that has happened 展开全文阅读
