should

ought to, should

这两个情态动词均可表示“应该、应当”之意。
ought to: 侧重反映客观情况，多在涉及法律、道义、责任、义务或原则时使用。
should: 侧重自己的主观看法，语气比ought to稍弱一些。

1. It should cost roughly 10.
   这大约10英镑。
2. We should improve what is called the quality of living.
   我们应该改进所谓的生活品质。
3. I should guess his age at about 30.
   我想他的年龄在30岁左右。
4. I don't think it will happen, but if it should what shall we do?
   我认为那件事不会发生，但如果真的发生，我们该怎么办？
5. You should give it a try.
   你应该试一试。
6. You should take advantage of it.
   你应该好好利用这个机会。
7. You really ought to/should do something about that cough!
   你咳嗽那麽厉害，真得治一治了！
8. I knew if I kept at it I should succeed.
   我知道如果我坚持下去就会成功。