You must finish your homework before you can go out to play

必须───must;做完───Done

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.

We must draw a clear distinction between ourselves and the enemy.───我们必须分清敌我.

There must be something wrong with my left arm, which is asleep.───我的左臂发麻,一定出什么问题了.

The realisation that the murderer must have been a close friend came as a shock.───意识到杀人凶手一定是个密友,大家都很震惊.

A buxom widow must be either married , buried or shut up in a convent.───寡妇门前是非多.

Owing to the limitation of our knowledge, there must be mistakes and errors in the book.───由于我们水平有限, 本书少不了会有缺点和错误.

You must settle the matter amongst yourselves.───你们必须彼此商量,自行解决这些问题.

Only a few students passed the exam, so you can see that the paper must have been extremely stiff.───只有几个学生通过了考试, 可见考题是很难的.

There must be an error in our calculations.

He that will thrive must rise at five.

We must be consistent in applying the rules.

We must make massive efforts to improve it.

If you want knwledge, you must toil for it.