ought to

ought to, should

1. 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。
2. You ought to have a haircut.
   你该去剪发了。
3. She failed one of the exam papers, but we ought to make allowance for the fact that she was ill.
   她有一门不及格，但我们必须考虑到她当时有病。
4. Regularity ought to be observed, as regularity is very conducive to health.
   生活应遵守规律，因为规律对健康有益。
5. China ought to make a greater contribution to humanity.
   中国应当对于人类有较大的贡献。
6. He is a very good tennis player; you ought to see him in action.
   他是个很好的网球运动员，你应当去看看他打球。
7. I think there's a train at 8.20 but you ought to make certain.
   我想8点20分有一班火车，不过你应该打听清楚。
8. I think you ought to go to/to go and see (ie consult) the doctor.
   我认为你应当去找医生看看病。