/wəd; wəd; strong form 强读式 wʊd; wud/; modal v (contracted form 缩约式 'd / d; d/; neg 否定式 would not, contracted form 缩约式 wouldn't / 5wUdnt; `wJdnt/)1 (a) (used with have + a past participle to describe the consequence of an imagined event 与have +过去分词连用, 表示一设想事情的结果)
*If he shaved his beard he would look much younger. 他要是把胡子刮了就少相多了.
* If you went to see him, he would be delighted. 倘若你去看他, 他一定非常高兴.
* I would think about it very carefully, if I were you. 我要是你的话, 我就十分慎重地考虑这件事.
(b) (used with have + a past participle to describe a hypothetical action or event in the past 与have +过去分词连用, 表示假想的过去的动作或事情)
*If I had seen the advertisement I would have applied for the job. 我要是看见那个广告了, 我就申请那份工作了.
* If she hadn't gone back for the letter, she wouldn't have missed the bus. 要不是她回去取信, 她就不至于错过那辆公共汽车了.
(c) (used to describe a hypothetical action or event in the present 用以表示假想的现在的动作或事情)
*She'd be a fool to accept, ie if she accepted.她要是接受, 她就是个傻瓜.
* Don't call her now it would make us late. 别现在给她打电话--现在打的话, 我们就迟到了.
* It would be difficult to make an accurate forecast. 预报很难准确.
* It would be a pity to miss the main film. 要是赶不上看这部电影的正片就太可惜了.
* I would start from this end. 要是开始做, 我就从这一头开始.
* Would I be able to help? 我能帮上忙吗?
2 (a) (used in making polite requests 用以提出客气的请求)
*Would you pay me in cash, please? 请您付给我现金行吗?
* You wouldn't have the time to phone him now, would you? 您现在没有那么多时间给他打电话, 是吧?
(b) (used with imagine, say, think, etc to give tentative opinions 与imagine、say、think等连用, 表达试探性的意见)
*I would imagine the operation will take about an hour. 我猜想这个手术大概需要一个小时左右吧.
3 (a) (used in offers or invitations 用以提出建议或邀请)
*Would you like a sandwich? 您想吃三明治吗?
* Would they like to sit down? 请他们坐下好吗?
* Would she like to borrow my bicycle? 她想借用我的自行车吗?
(b) (used with like, love, hate, prefer, be glad/happy, etc to express preferences 与like、love、hate、prefer、be glad/happy等连用, 表达较合意愿的做法)
*I'd love a coffee. 我倒想喝杯咖啡.
* I'd hate you to think I was criticizing you. 我可不愿意让你觉得我是在批评你.
* I'd be only too glad to help. 我非常愿意帮帮忙.
4 (used when commenting on characteristic behaviour 用以评论特有的行为)
*That's just what he `would say, ie what he might be expected to say. 他就是爱说这种话.
* It `would rain (ie How typical it is of our weather that it should rain) on the day we chose for a picnic! 我们哪天去野餐, 它哪天就准下雨!
5 (used after so that, in order that to express purpose 用于so that、in order that之後, 表示目的)
*She burned the letters so that her husband would never read them. 她把信都烧了, 这样一来她丈夫就绝对看不见了. =>Usage
3 at may 见may所附用法第3项.

pt of will1.

modal v negative short formwouldn't

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1【past intentions/expectations】
2【imagined situations】
3【past habits】
4【requesting】
5【offering/inviting】
6【what somebody wants】
7【past purpose】
8 would not
9【advice】
10 I would think/imagine/say
11【typical behaviour】
12 would that ...

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[Language: Old English;Origin: wolde]
【PAST INTENTIONS/EXPECTATIONS】
used to say what someone intended to do or expected to happen
　They said they would meet us at 10.30 at the station.
　She said she wouldn't be coming to the library any more.
　Arnold knew he would be tired the next day.
　It would soon be dark.
【IMAGINED SITUATIONS】
a) used when talking about a possible situation that you imagine or want to happen
　What would you do if you won a million pounds?
　I'd be amazed if I got the job.
　I wish they'd come and visit us.
　If only he would listen to me.
b) used when talking about something that did not happen, or a situation that cannot exist
　Everything would be very different if your father were still alive.
　I would have phoned you, but there wasn't time.
　Alex would never have found out if you hadn't told him.
　What would have happened if I hadn't been here?
【PAST HABITS】
used to say that something happened often or regularly in the past
　When we worked in the same office, we would often have coffee together.
　On summer evenings they would sit out in the garden.
【REQUESTING】
spoken used to ask someone politely to do something
　Would you shut the window, please?
　Would you mind waiting outside?
　Would someone please tell me what is going on?
【OFFERING/INVITING】
spoken used to offer something to someone or invite them somewhere politely
　Would you like a coffee?
　We're going to the theatre this evening. Would you be interested in coming?
【WHAT SOMEBODY WANTS】
spoken used to say that someone wants something or wants to do something
would like/love/prefer
　Yes, please, I'd love a coffee.
　My parents would like to meet you.
　Claudia would have liked to refuse (=wanted to refuse) , but she didn't dare.
　I'd hate (=I do not want) to disappoint you.
would rather/sooner
(=used to say what someone prefers)
　I'd rather stay in this evening, if that's all right with you.
【PAST PURPOSE】
used after 'so that' to show that someone was trying to make something happen or prevent something
　We packed all the books in wooden boxes so that they wouldn't get damaged.
would not
a) used to say that someone refused to do something
　He wouldn't give us any money.
b) used to say that something did not happen, even though someone was trying to make it happen
　The door wouldn't open, no matter how hard she pushed.
【ADVICE】
spoken used when giving or asking for advice
　I'd try to get there early if you can.
　I would talk to the doctor if I were you .
　What would you do if you were in my position?
I would think/imagine/say
spoken used to give your opinion about something when you are not very sure about it
　I would think you'd be happier in a different school.
　'Will it cost a lot?' 'I would imagine so.'
【TYPICAL BEHAVIOUR】
spoken used to say that an action is typical or expected - usually used to show disapproval
　You would go and spoil it, wouldn't you!
　She insists that she did nothing wrong, but then she would say that, wouldn't she?
would that ...
literary used to express a strong wish or desire
= if only
　Would that we had seen her before she died.