1.（用于提问原因）为什么
You usewhy in questions when you ask about the reasons for something.
e.g. why hasn't he brought the whisky?...
他为什么没把威士忌拿来？
e.g. why didn't he stop me?...
为什么他没阻止我？
2.(用于从句句首)为什么
You usewhy at the beginning of a clause in which you talk about the reasons for something.
e.g. He still could not throw any further light onwhy the elevator could have become jammed...
对于电梯为什么会卡住他仍旧给不出更多的解释。
e.g. Experts wonderwhy the US government is not taking similarly strong actions against AIDS in this country...
专家们对为什么美国政府没在这个国家采取类似的强硬措施来对抗艾滋病而感到疑惑。
3.(用于reason后引导关系从句)
You usewhy to introduce a relative clause after the word 'reason'.
e.g. There's a reasonwhy women don't read this stuff; it's not funny...
女人不读这种东西是有原因的，它并不好笑。
e.g. Unless you're ill, there's no reasonwhy you can't get those 15 minutes of walking in daily.
除非你病了，否则你没有理由每天连走15分钟都做不到的。
4.(问句中与 not 连用表示建议)为什么(不)
You usewhy with 'not' in questions in order to introduce a suggestion.
e.g. why not give Claire a call?...
为什么不给克莱尔打个电话？
e.g. why don't you come home with me until you sort things out?...
你何不先和我一起回家，等事情解决了再走？
5.(问句中与 not 连用表示恼怒或气愤)为什么(不)
You usewhy with 'not' in questions in order to express your annoyance or anger.
why是什么意思
e.g. why don't you look where you're going?...
走路怎么不看着点儿道呢？
e.g. why don't they just leave it alone?
他们就不能别管了吗？
6.(表示同意别人的建议)为什么不呢，好，行
You saywhy not in order to agree with what someone has suggested.
why什么意思
e.g. 'Want to spend the afternoon with me?' — 'why not?'...
“想和我共度这个下午吗？”——“好啊！”
e.g. 'Shall I tell them about poor Mrs Blair?'—'why not?'
“我应该告诉他们可怜的布莱尔太太的情况吗？”——“为什么不呢？”
7.(用于句首表示惊讶、震惊或生气)哎呀，哟，嗨
People say 'why!' at the beginning of a sentence when they are surprised, shocked, or angry.
e.g. why hello, Tom...
哎呀，你好，汤姆。
e.g. why, this is nothing but common vegetable soup...
啊，这只不过是普通的蔬菜汤而已。
8. the whys and wherefores -> see wherefores
1. 如何：希望治疗者能拯救他们的幻想. 因此心理治疗的目的并非如传统所言要去医治某人,而是要协助当事人了解他们正在做什幺,使他们摆脱受害者的角色. ◎只要拥有一项生存的理由,就能忍受如何(why)生存的痛苦.
2. why
2. 为何这样做：职务分析应该注重对工作六要素进行分析即,工作内容(What)、责任者(Who)、工作岗位(Where)、怎样操作(How)以及为何这样做(why). 职务分析在企业管理中具有重要作用,它要求企业各岗位必须具有明确的职责和范围,从而合理招聘、选拔和使用所需人才.
3.why：y; 为什么〖网语〗
4.why：world hunger year; 世界饥饿年
名词复数:：whys
