трябва 用英语:

ought to...

Students who want to major in physics ought to have a sufficient knowledge of mathematics.

Mmmmn ... maybe I'll have a hair of the dog. "Whoa, hold up a mo! Here, I cooked roast fish for this morning. You ought to be able to eat this OK."

It may seem like a hassle, but I think you ought to go back to the basics and start over. Haste makes waste they say.

If you convey to a woman that something ought to be done, there is always a dreadful danger that she will suddenly do it.

Reason is, and ought only to be the slave of the passions, and can never pretend to any other office than to serve and obey them.

A man ought to read just as inclination leads him; for what he reads as a task will do him little good.

Religion, which should most distinguish us from the beasts, and ought most particularly elevate us, as rational creatures, above brutes, is that wherein men often appear most irrational, and more senseless than beasts.

The measure which ought to link our activities, in my view, tells us two things.

But children lose everything unless somebody is there to help them, and if your parents are too stupid to do it, maybe I ought to.

You really ought to quit smoking; it's damaging to your health. Could you translate that for me? It ought not to take you long.

In fact, I'll even call George at the office and tell him he ought to come home and help out.

There is danger from all men. The only maxim of a free government ought to be to trust no man living with power to endanger the public liberty.

You really ought to think before you open your mouth, you'd avoid a lot of misunderstandings that way.

It's obvious that I spend too much time studying Chinese characters, so I ought to study other aspects of the language more.

I must go.

Now that he has graduated, he must become more serious.

All the delegates knew they must discuss it.

I will go if I must.

You lean on your parents too much. You must be more independent.

His doctoral thesis must be submitted to the professor by the end of the month.

The checked player must find a way for the king to escape and block the check.

I must have tried on everything in the shop, but nothing looked right on me.

Must we dress up?

Even if it costs 10,000 yen, I must buy the dictionary.

In order to qualify for the homestay you must have an interview with the sponsors.

It's already ten o'clock. My mother must be angry.

Under no circumstances must you leave the room.

What a good scholar the author must be to write such a splendid book!

In cold weather we must be sure to keep our bodies warm.