中译英：1此地禁止抽烟2你明天要考试，今天不应熬夜3我们应相互学习4她有时在家帮着做家务

1.no smoking here
2.you 'll take an exam tomorrow,so you shouldn't stay up late tonight.
3.we should learn from each other.
4.she helps doing some housework at home sometimes.

Forbid smoking in this place

You will want examination tomorrow , should not stay up late today

We should study 4 mutually she is at home sometimes being helping making household duties