ought

aux.

应该（指道义上有责任）；应当（显示所采取行动正确或明智）；可能会；预料会做（某事）

vt.& vi.

应该（指道义上有责任）；（表示愿望）应当（显示所采取行动正确或明智）；可能会；预料会做（某事）

ought to do sth应该；应该做某事

ought to know better应该懂得多一些

1. I don't think you ought to.
   我看你不应该。
2. You ought to be more careful, you know.
   你应该小心一点，知道吗？
3. The information ought to be made more accessible.
   资料应该明白易懂。
4. You ought to scrap the old bike and buy a new one.
   你应该扔掉这辆旧自行车，买一辆新的。
5. You ought to treat these matter with candor.
   你应当公正处理此事。
6. He ought to have kept his promise.
   他原本应该遵守自己的诺言。

How to Derive "Ought"From "Is"
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