ought

1. 在疑问句中，通常用should而不是ought to：
   In questions, should is usually used instead of ought to .
   1. You should take the baby to the doctor’s.
      你应该把这婴儿带去看看医生。
   2. I ought to give up smoking.
      我应该戒烟。
   3. Should we call the doctor?
      我们叫医生来好吗？
2. had better亦可用以表示在目前状况下最好做某事：
   Had better can also be used to say what is the best thing to do in a situation that is happening now.
   1. We’d better hurry or we’ll miss the train.
      我们最好快点，否则就赶不上火车了。
3. 过去时用should have或ought to have构成：
   You form the past by using should have or ought to have .
   1. She should have asked for some help.
      她本应该请求帮助的。
   2. You ought to have been more careful.
      你本应该更小心一点的。
4. should not或shouldn't（以及在北美英语中很少见，在英国英语中为正式用法的ought not to或oughtn't to）表示不应该：
   The forms should not or shouldn’t (and ought not to or oughtn’t to , which are rare in NAmE and formal in BrE ) are used to say that something is a bad idea or the wrong thing to do.
   1. You shouldn’t drive so fast.
      你不应该把车开得这么快。
5. should not have或shouldn't have以及很少用的ought not to have或oughtn't to have均用于指过去：
   The forms should not have or shouldn’t have and, much less frequently, ought not to have or oughtn’t to have are used to talk about the past.
   1. I’m sorry, I shouldn’t have lost my temper.
      对不起，我不该发脾气。

Ought to is a phrasal modal verb. It is used with the base form of a verb. The negative form of ought to is ought not to, which is sometimes shortened to oughtn't to in spoken English. ought to 是短语情态动词，与动词原形连用。否定形式为 ought not to，口语中有时略作 oughtn't to。


1. PHR-MODAL （认为某事道义上正确，尤用于提出或征求建议或意见）应当，应该
   You use ought to to mean that it is morally right to do a particular thing or that it is morally right for a particular situation to exist, especially when giving or asking for advice or opinions.
   1. Mark, you've got a good wife. You ought to take care of her...
      马克，你娶了个好妻子，应该好好待她。
   2. The people who already own a bit of money or land ought to have a voice in saying where it goes...
      已经有点钱财或土地的人应当对其走向有发言权。
   3. You ought to be ashamed of yourselves. You've created this problem.
      你们应该感到惭愧，都是你们惹的祸。
2. PHR-MODAL （认为某事可行或重要，尤用于提出或征求建议或意见）应当，应该
   You use ought to when saying that you think it is a good idea and important for you or someone else to do a particular thing, especially when giving or asking for advice or opinions.
   1. You don't have to be alone with him and I don't think you ought to be...
      你不必单独跟他呆在一起，而且我认为你也不该这样。
   2. You ought to ask a lawyer's advice...
      你应当征求一下律师的意见。
   3. She wondered if she ought to take some coffee out to Alfred...
      她不知道自己是否应该给艾尔弗雷德端去咖啡。
   4. We ought not to be quarrelling now.
      我们现在不应该吵架。
3. PHR-MODAL （认为某事确实，或预计某事发生或已经发生）应该/应该已经
   You use ought to to indicate that you expect something to be true or to happen. You use ought to have to indicate that you expect something to have happened already.
   1. 'This ought to be fun,' he told Alex, eyes gleaming.
      “这应该会很有趣！”他对亚历克斯说，两眼闪闪发光。
4. PHR-MODAL （表示某事本应如此，但实际情况未必）应该
   You use ought to to indicate that you think that something should be the case, but might not be.
   1. By rights the Social Democrats ought to be the favourites in the election. But nothing looks less certain...
      社会民主党按理应该最有希望赢得这次选举，但一切从未如此不确定过。
   2. Though this gives them a nice feeling, it really ought to worry them.
      虽然这让他们感觉良好，但他们其实应该为此担心。
5. PHR-MODAL （表示从已知情况推测某事已经发生，但不确定）应该
   You use ought to to indicate that you think that something has happened because of what you know about the situation, but you are not certain.
   1. He ought to have reached the house some time ago.
      他应该早就到房子那儿了。
6. PHR-MODAL （与过去分词连用，表示预期的事未发生或预计的情况并非如此）本该，本当
   You use ought to have with a past participle to indicate that something was expected to happen or be the case, but it did not happen or was not the case.
   1. Basically the system ought to have worked...
      其实这套系统本应发挥作用的。
   2. The money to build the power station ought to have been sufficient.
      建设电站的资金本该足够了。
7. PHR-MODAL （与过去分词连用，表示未做本应该做的事情）本该，本当
   You use ought to have with a past participle to indicate that although it was best or correct for someone to do something in the past, they did not actually do it.
   1. I realize I ought to have told you about it...
      我意识到自己本该把这件事告诉你的。
   2. Perhaps we ought to have trusted people more...
      也许我们本当对人多一些信任的。
   3. I ought not to have asked you a thing like that. I'm sorry...
      我不该问你那样的事情，我很抱歉。
   4. I'm beginning to feel now we oughtn't to have let her go away like that.
      我现在开始觉得，我们不该就那样让她走了。
8. PHR-MODAL （礼貌地告知某人自己必须做某事）该，得
   You use ought to when politely telling someone that you must do something, for example that you must leave.
   1. I really ought to be getting back now...
      现在我真得回去了。
   2. I think I ought to go.
      我想我该走了。

1. I think I ought to get back to work.
   我想我该回去工作了。
2. I ought to be glad about what happened
   我对发生的事情应该感到高兴才是。
3. She always said I ought to live alone
   她总说我应该一个人住。
4. She ought to marry again, don't you think?
   她应该再婚，难道你不这么认为吗？
5. Mark, you've got a good wife. You ought to take care of her
   马克，你娶了个好妻子，应该好好待她。
6. The people who already own a bit of money or land ought to have a voice in saying where it goes
   已经有点钱财或土地的人应当对其走向有发言权。
7. You ought to be ashamed of yourselves. You've created this problem.
   你们应该感到惭愧，都是你们惹的祸。
8. You don't have to be alone with him and I don't think you ought to be
   你不必单独跟他呆在一起，而且我认为你也不该这样。
9. You ought to ask a lawyer's advice
   你应当征求一下律师的意见。
10. She wondered if she ought to take some coffee out to Alfred
    她不知道自己是否应该给艾尔弗雷德端去咖啡。
11. We ought not to be quarrelling now.
    我们现在不应该吵架。
12. 'This ought to be fun,' he told Alex, eyes gleaming.
    “这应该会很有趣！”他对亚历克斯说，两眼闪闪发光。
13. By rights the Social Democrats ought to be the favourites in the election. But nothing looks less certain
    社会民主党按理应该最有希望赢得这次选举，但一切从未如此不确定过。
14. Though this gives them a nice feeling, it really ought to worry them.
    虽然这让他们感觉良好，但他们其实应该为此担心。
15. He ought to have reached the house some time ago.
    他应该早就到房子那儿了。
16. Basically the system ought to have worked
    其实这套系统本应发挥作用的。
17. The money to build the power station ought to have been sufficient.
    建设电站的资金本该足够了。
18. I realize I ought to have told you about it
    我意识到自己本该把这件事告诉你的。
19. Perhaps we ought to have trusted people more
    也许我们本当对人多一些信任的。
20. I ought not to have asked you a thing like that. I'm sorry
    我不该问你那样的事情，我很抱歉。
21. I really ought to be getting back now
    现在我真得回去了。
22. You know, we really ought to get another car
    要知道，我们真的应该换一辆车了。
23. I ought to relax and stop worrying about it
    我应该放松一下，不要再担心它了。
24. I ought not to tell you but I will, since you're in the family, so to speak
    我本来不该告诉你的，但我还是要这么做，因为好歹你是家里的一员。
25. Do you think I ought to seal the boxes up?
    你认为我应该把这些盒子封起来吗？
26. We ought to follow her good example.
    她是个好榜样，我们应当仿效她。
27. It's getting late. You ought to get going.
    时间不早了，你好走了。
28. We ought to and can produce more petroleum.
    我们应该并且能够生产更多的石油。
29. I ought first to have asked your consent.
    我本应该首先征得你的同意。
30. You ought to be stricter with him. He's very naughty.
    你对他应更严格，他太淘了。

  ought should【导航词义：应该】

  ought modal v. 应该，应当

〔辨析〕无时态和人称变化，后接动词不定式，表示义务、责任、建议等，侧重反映客观情况。

  should modal v. 应该

〔辨析〕侧重自己的主观看法。在表示义务、责任时，语气比 ought 稍弱；在表示建议而非义务时，比 ought 更常用。