We have to

必须───must

You must hand over your passport before you leave.───离境前必须交回护照.

I must think over this, I have known for years that it was in the cards.───我得仔细考虑考虑,许多年来, 我就知道这是可能的.

We must do our work faster, and further better.───我们要把工作做得更加快一些, 而且要做得更加好一些.

We must not rush into anything without careful planning.───任何事情我们没有经过仔细筹划就不可贸然行事.

The wicked must be wiped out.───恶人必须除掉.

A dancer must throw herself heart and soul into every performance.───舞蹈演员对每一场演出都必须尽心尽力.

I can't explain such a statement by him on the basis of logic. He must have blown his top.───我从逻辑推理方面解释不了他讲的这番话,他想必是神经错乱了.

Managers must appraise all staff.───经理必须对全体员工作出评价。

We must have the wall redone.───我们必须将那面墙重修一下.

We must decide between going home and staying at school during this winter vacation.───我们必须决定寒假期间是回家还是留在学校.

What goes up must come down.Isaac Newton

He that will thrive must rise at five.

Sorry, I must have dialled the wrong number.

Children under 14 must be accompanied by an adult.

If you want knwledge, you must toil for it.

As the wind blows, you must set your sail.

We must make massive efforts to improve it.

A full cup must be carried steadily.

Desperate diseases must have desperate cures.