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what happened 和WHAT IS HAPPEND的区别

来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/15 09:35:50
what happened 和WHAT IS HAPPEND的区别
区别在哪里啊?还有个WHAT IS HAPPENING,发生了什么应该是WHAT HAPPEND 那WAHT IS
happen是不及物动词,没有被动语态,因此不可说what is happened.
WHAT IS HAPPENING正在发生什么事情；
WHAT HAPPENED 发生了什么事情.
时态有别.
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