“你为什么笑呢？”候选人问。

"Why do you laugh?" asked the candidate.

youdao

但是，妈妈，你为什么笑呢？

But, mother, why do you smile?

youdao

“请告诉我，”爱丽丝有点胆怯地问，因为她还不十分清楚自己先开口合不合规矩，“为什么你的猫能笑呢？”

'Please would you tell me,' said Alice, a little timidly, for she was not quite sure whether it was good manners for her to speak first, 'why your cat grins like that?'

youdao