很高兴为你解答.
We must .我们必须.
例句：We must go now 我们必须得走了
You must finish your homework 你必须完成家庭作业.
We should ...我们应该...
例句：We should take care of the old.我们应该照顾老人
You should be careful while crossing the road.你过马路要注意安全.
再问： 忘记加了,每种至少要10句,拜托了
再答： You must get there at 9 o'clock. 你必须9点钟到那里。 I must not watch TV for too long. 我必须不看太长时间电视。 I must help my mother with hosework every year. 我必须每年帮助我妈妈做家务。 I must drink water everyday. 我必须每天喝水 We must study hard. 我们应该努力学习。 They must have been getten home. 他们应该已经到家。 We must obey tracfic rules. 我们应该遵守交通规则。 If you want to make progress in english,you must write and read more. 如果你想在英语方面进步，你必须多写多读。 You should finish your homework first. 你应该先完成你的作业。 You should say sorry to your parents because that's your fault. 你应该向你的父母道歉，因为你做错了。 You should finish your homework befor watch TV. 你应该在看电视之前完成家庭作业。 We should water the flowers everyday. 我们应该每天为花浇水。 We should help each other. 我们应该互相帮助。 In sum， theory should be combined with practice. 总之，理论应该与实验相结合。 You should tell your mother about it at once. 你应该立即把此事告诉你妈妈 You should complete your test in time. 你们应该按时做完你们的实验。 加上上面的应该够了，满意的话请按下选为满意答案按钮。多谢！
