ought
- aux./v.应该（指道义上有责任），应当（显示所采取行动正确或明智）;应该，该（用于表示强烈的信念或期望）;预料会做（某事）;早应该，本该，本当（做某事）
- n.零，同nought;义务，责任
- pron.<古>任何事物，同aught
oughtought
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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.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。
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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.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。
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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.'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。
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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.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。
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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.He ought to have reached the house some time ago.
他应该早就到房子那儿了。
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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.Basically the system ought to have worked...
其实这套系统本应发挥作用的。
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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.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。
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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.I really ought to be getting back now...
现在我真得回去了。
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That ought to be enough food for the four of us .
这些食物应该够咱们四个人吃了。
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We ought to be able to manage it between us .
我们齐心协力应该能把这事办妥。
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You ought to get out of the house more .
你应该多到户外去走走。
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We ought to stock up on film before our trip .
我们应该在旅行前备足胶卷。
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If you 're passing blood you ought to see a doctor .
如果便中带血，你就应该找大夫看看。
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There ought to be a law against it !
应该有法律来防止这种事！
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I ought to make a will .
我应该立份遗嘱。
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I ought to give up smoking .
我应该戒烟。
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The punishment ought to fit the crime .
罚需当罪。
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She 's crazy ─ she ought to be locked up .
她疯了，应该把她关起来。
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If he started out at nine , he ought to be here by now .
他如果九点出发，现在应该到这里了。
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Your claim ought to succeed , in which case the damages will be substantial .
你的索赔应当能成功，假如这样的话，损害赔偿金将会相当可观。
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You ought to make a few discreet enquiries before you sign anything .
你应该审慎地询问清楚再签字。
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She ought to have waited for a decent interval before getting married again .
她再次嫁人也应该适当等上一段时间。
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You ought to have been more careful .
你本应该更小心一点的。
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You ought to stop smoking .
你应当戒烟。
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We ought to be leaving now .
我们现在该动身了。
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You ought to meet her ─ she 's a hoot !
你应该见见她——她笑料十足！
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Nurses ought to earn more .
护士的薪资应该多一点。
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They ought to apologize .
他们应该道歉。
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I think I ought to get back to work .
我想我该回去工作了。
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You know , we really ought to get another car
要知道，我们真的应该换一辆车了。
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This place is run like a hotel ought to be run
这个地方的经营方式就是旅馆应该有的样子。
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He ought to have reached the house some time ago .
他应该早就到房子那儿了。
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It ought to make life much easier all round
它应该会让生活的方方面面都变得更加方便。
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I think you ought to give football a rest for a time .
我认为你应该暂时停止踢足球。
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These and other such measures ought to have been put into effect in 1985 .
这些以及其他类似的措施在1985年就应该开始实施了。
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The money to build the power station ought to have been sufficient .
建设电站的资金本该足够了。
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I think he ought to be at the right hand of the president .
我想他应该成为总统的得力助手。
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Maybe we ought to go down to the library and check it out
或许我们应该去趟图书馆，查个明白。
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。
I ought to go home now. I must prepare dinner for my children.
我得回家了，我必须给孩子们做饭。
Such things ought not to be allowed.
这种事情不该允许。
You ought to finish it on time.
你应该按时完成它。
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。
You should have a mind of your own.
你应该有自己的主见。
He should go and see his father.
他应该去看看父亲。
试比较：
I ought to go.
我得走了。（侧重客观原因）
I should go.
我应该走了。（侧重主观意愿）
We ought to help her.
我们应该帮助她。（指在道义上有责任这样做）
We should help her.
我们该帮她。（帮助她是明智之举，但并非指在道义上必须这样做）