问题标题：
Whathashappened?Whathashappened?---Ihavelostmykeyandcan'topenthedoor.为什么不能用Whathappened?---Ilostmykeyandican'topenthedoor.两者的区别是什么?
问题描述：
Whathashappened?
Whathashappened?
---Ihavelostmykeyandcan'topenthedoor.
为什么不能用
Whathappened?
---Ilostmykeyandican'topenthedoor.
两者的区别是什么?
刘文剑回答：
1.Whathashappened?
hasdone现在完成时,强调对现在的影响.
Ilostmykeyandican'topenthedoor.
我丢了我的钥匙,然后我不能开门啦.
而Whathappened?
则不对,不应有影响,只是过去发生了什么..
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