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
问题描述：
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
答
一般只有WHAT HAPPEND
答
只有WHAT HAPPEND 没有 WAHT IS HAPPENED
答
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.