why

adverb

/waɪ/

Idioms

used in questions to ask the reason for or purpose of something（用于问句）为什么，为何
- Why were you late?你为什么迟到？
- Tell me why you did it.告诉我你为什么这样做。
- ‘I would like you to go.’ ‘Why me?’“我希望你去。” “为什么要我去呢？”
- (informal) Why oh why do people keep leaving the door open?人们到底为什么总不随手关门呢？
used in questions to suggest that it is not necessary to do something（反问，表示不必）何必
- Why get upset just because you got one bad grade?何必因为一次成绩不好就想不开呢？
- Why bother to write? We'll see him tomorrow.还费事写信干什么？我们明天就见到他了。
used to give or talk about a reason（说明理由）为什么，…的原因
- That's why I left so early.这就是我早早离去的原因。
- I know you did it—I just want to know why.我知道这是你干的，我只是想知道为什么。
- The reason why the injection needs repeating every year is that the virus changes.每年需要重新注射的原因是这病毒经常变化。
Express Yourself Giving reasons, justifying a choice
Giving reasons, justifying a choice对选择作出解释In various exams, you are asked to make a choice and give reasons for it. In conversation or in a meeting, you need to explain and justify your decisions:在各种考试中需要作出选择并给出理由，在谈话或会议上需要对决定加以解释，可用以下表达方式：
- There are two main reasons why I think it’s the best option: first, there's the cost and second, the quality.我认为这是最好的选择，主要原因有两个：第一是成本，第二是质量。
- I think/believe it's the right thing to do because it gives everyone a fair chance.我认为这么做是正确的，因为这给予每个人公平的机会。
- I would choose the newer one on the grounds that it will last longer.我会选择较新的那个，因为它更加耐用。
- Of the three houses, the largest one seems to me to be the best, because they need the room.这三栋房子中，最大的那栋在我看来是最好的，因为他们需要这么大的空间。
- My choice would be number 3, simply because it's the clearest design.我的选择是 3 号，原因就在于它的设计最清晰。

词源Old English hwī, hwȳ ‘by what cause’, instrumental case of hwæt ‘what’, of Germanic origin.

Idioms

why ever

used in questions to mean ‘why’, expressing surprise（用于问句，语带惊讶）究竟为什么
- Why ever didn't you tell us before?你为什么不早告诉我们呢？

why not?

used to make or agree to a suggestion（提出或赞同建议）为什么不呢，好哇
- Why not write to her?为什么不给她写信呢？
- ‘Let's eat out.’ ‘Why not?’“咱们到外边吃去吧。” “好哇。”
- Why don't we go together?我们为什么不一起去呢？
Topics Suggestions and adviceb1

词汇	why
释义	why adverb /waɪ/ /waɪ/ Idioms used in questions to ask the reason for or purpose of something（用于问句）为什么，为何 Why were you late?你为什么迟到？ Tell me why you did it.告诉我你为什么这样做。 ‘I would like you to go.’ ‘Why me?’“我希望你去。” “为什么要我去呢？” (informal) Why oh why do people keep leaving the door open?人们到底为什么总不随手关门呢？ used in questions to suggest that it is not necessary to do something（反问，表示不必）何必 Why get upset just because you got one bad grade?何必因为一次成绩不好就想不开呢？ Why bother to write? We'll see him tomorrow.还费事写信干什么？我们明天就见到他了。 used to give or talk about a reason（说明理由）为什么，…的原因 That's why I left so early.这就是我早早离去的原因。 I know you did it—I just want to know why.我知道这是你干的，我只是想知道为什么。 The reason why the injection needs repeating every year is that the virus changes.每年需要重新注射的原因是这病毒经常变化。 Express Yourself Giving reasons, justifying a choiceGiving reasons, justifying a choice对选择作出解释In various exams, you are asked to make a choice and give reasons for it. In conversation or in a meeting, you need to explain and justify your decisions:在各种考试中需要作出选择并给出理由，在谈话或会议上需要对决定加以解释，可用以下表达方式： There are two main reasons why I think it’s the best option: first, there's the cost and second, the quality.我认为这是最好的选择，主要原因有两个：第一是成本，第二是质量。 I think/believe it's the right thing to do because it gives everyone a fair chance.我认为这么做是正确的，因为这给予每个人公平的机会。 I would choose the newer one on the grounds that it will last longer.我会选择较新的那个，因为它更加耐用。 Of the three houses, the largest one seems to me to be the best, because they need the room.这三栋房子中，最大的那栋在我看来是最好的，因为他们需要这么大的空间。 My choice would be number 3, simply because it's the clearest design.我的选择是 3 号，原因就在于它的设计最清晰。词源Old English hwī, hwȳ ‘by what cause’, instrumental case of hwæt ‘what’, of Germanic origin. Idioms why ever used in questions to mean ‘why’, expressing surprise（用于问句，语带惊讶）究竟为什么 Why ever didn't you tell us before?你为什么不早告诉我们呢？ why not? used to make or agree to a suggestion（提出或赞同建议）为什么不呢，好哇 Why not write to her?为什么不给她写信呢？ ‘Let's eat out.’ ‘Why not?’“咱们到外边吃去吧。” “好哇。” Why don't we go together?我们为什么不一起去呢？ Topics Suggestions and adviceb1 why exclamation /waɪ/ /waɪ/ (old-fashioned or North American English) used to express a feeling of being surprised, impatient, etc.（表示惊讶、不耐烦等）哎呀，呦，哟，嗨 Why Jane, it's you!呦，简，是你呀！ Why, it's easy—a child could do it!嗨，这容易得很，连小孩子都干得了！词源Old English hwī, hwȳ ‘by what cause’, instrumental case of hwæt ‘what’, of Germanic origin. why noun /waɪ/ /waɪ/ Idioms Idioms the whys and (the) wherefores the reasons for something理由；原因；缘故 I had no intention of going into the whys and the wherefores of the situation.我无意深入调查这一情况的来龙去脉。
随便看	holed up holed up hole in hole in corner hole-in-corner hole-in-one hole in one hole in the heart hole in the wall hole-in-the-wall hole-in-the-wall_1 holeless hole-out holes hole's holes-in-one holes-in-the-wall holes up hole up hole-up holey holeyer holeyest hole–and–corner hole–in–corner