WHAT DID SHE HAVE.中HAVE为什么不变?

问题描述:

WHAT DID SHE HAVE.中HAVE为什么不变?

did 后加动词原形

因为前面有did。

陈述句为She had something.
对应的疑问句为What did she have?
这里的do已经变为过去式did了,所以have不变.

因为前边已用did 表过去了 后边就要用原形