1. You’re supposed to do your homework before 5:00. 你应该在5点钟之前就做作业。
2. I have to finish my homework first. 我必须先完成作业。
3. You must do it right now. 你必须马上做。
4. You ought to have your breakfast first. 你应该先吃早餐。
5. You should do it first. 你应该先做这件事。
6. Are we required to work out the plan today? 有要求我们要在今天拟好计划吗？
7. Is there any need for us to get a visa? 我们有必要签证吗？
8. I think it is necessary. 我觉得有必要。
9. I don’t really think you want to. 我真的以为你不想要。
10. I’m obliged to offer my resignation. 我必须辞职。
