повинен 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.

You should sleep.

If I should be suddenly spoken to in English, I might run away.

The relationship between husband and wife should be based on love.

Needless to say, fundamental human rights should be respected.

If your company primarily does business with America, then you should be studying English with a native speaker from America.

Tom is taking a walk with Mary and should be back before long.

Tom agrees that Mary should do most of the driving on their upcoming trip.

Spending time with your significant other should be high on your priority list.

You don't have to study all day. You should go out and have some fun.

Don't come to me now with that. You should have said something when it originally happened.

Should I put this bag in the overhead compartment?

A man should not be judged by his station in life.

Before you go hiking in the woods, find out what you should do when you meet a bear.

The first word of every sentence should be capitalized.

What should we do with people who are very sick or hurt and can't get better?