for what reason
(used for expressing surprise or slight impatience or annoyance)
It turned into a..celebration, I don't know why.
出自: R. Lehmann
Why didn't you stop him?
出自: Day Lewis
Why did you leave Russia?
出自: I. Murdoch
Chance did not understand why she laughed.
出自: J. Kosinski
Why the air of great solemnity?
出自: ellipt.
误 Why did you come to fall into the river?
正 How did you come to fall into the river?
析 现代汉语的“为什么”,有时指“如何”“怎么样”。
误 Why don't ask the teacher for help?
正 Why not ask the teacher for help?
析 Why not do...?是Why don't you/we do...?的省略形式,无主语时不用助动词do, not后直接加动词原形。
误 Is there any reason that you should have a holiday?
正 Is there any reason why you should have a holiday?
析 当名词reason作定语从句的先行词时,引导词只能用why。