2、what happened(发生了什么事),动作发生在过去,所以用一般过去时。
3、词汇:
发生occur; occurrence; happen; germination; arises
什么事what; What's up; What's the matter
2、what happened(发生了什么事),动作发生在过去,所以用一般过去时。
3、词汇:
发生occur; occurrence; happen; germination; arises
什么事what; What's up; What's the matter