"Line one of the plan for the future of Afghanistan must be not just a credible government, not just a legitimate government, but a government with a coherent program, a consensus program for the future of the country,"

VOA: standard.2009.10.21

The new prince, as we've seen, must know how to use religion but needs to learn how not to be used by religion, must not become a dupe of the religious.

正如我们所看到的，这种新型君主必须知道,如何去利用宗教而不是被宗教所利用,必须避免成为受宗教愚弄摆布的对象。

耶鲁公开课 - 政治哲学导论课程节选

You can also use a "must" pattern when you're not talking about a person but you're talking about a situation.

当你不在谈论人物，而是在谈论情况的时候，你也可以用“must”句型。

Must 课堂 - SpeakingMax英语口语达人

It is not enough merely to speak the same words, but in a sense, citizens must have certain common experiences, certain common memory and experience that shape a city and the people.

仅是说相同的话还不够，另一方面，公民还必需,要有特定的共同经历，特定的共同记忆,与形塑城市与人民的经历。

耶鲁公开课 - 政治哲学导论课程节选