0 for what reason -- 为什么
"I'm going home." "Why?" “我要回家了。”“为什么？”
Why should I help him - he never helps me? 我为什么要帮他——他从来都没帮过我？
Why is it that I find chocolate so addictive? 为什么我觉得巧克力如此让人上瘾呢？
The police asked me to explain why I hadn't reported the accident sooner. 警方要我解释为什么没有及时报告这起事故。
I don't know why she isn't here. 我不知道为什么她没在这儿。
Quite why he isn't here today is a mystery. 他今天为什么不在这里真是个谜。
2 the reasons for something -- 为什么；原因
I know very little about the whys and the wherefores of the situation. 我根本不知道是什么原因导致出现了这种情况。
I'll never comprehend why she did what she did.
She marched into my office demanding to know why I hadn't written my report.
This is why it is much easier to determine whether a philosophical principle is true than to determine the extent of its validity.
Then why does threat simulation co-occur with psychological troubles?
Political economists and political scientists have offered a plethora of explanations for why competition in laxity remains rare in environmental and consumer policy.
