You must not eat in the library.

你不能在图书馆吃东西。

You must not be late for school.

你不能上学迟到。

You must not ask Westerners How old are you?

你不应该问西方人“你多大了？”

You must not ask How much money do you make?

你不应该问“你赚多少钱？”

You must not push your way onto the bus.

你不能挤上公交车。

In Greece, you must not give white flowers.

在希腊，你不能送白花。

You must not eat or drink in shops or museums.

你不应该在商店或博物馆里吃喝。

You must not ride your bike in the playground.

你不能在操场上骑自行车。

It is important to know what you must and must not do.

了解你必须和不应该做的事情很重要。

You must not park here.

你不得在这里停车。