高中 情态动词 讲解练习 全英

✧John isn’t in class. He must be sick. John isn’t in class. He may be sick.

--I am thinking of something made of metal that you can find in my pocket.

--It could be a pen. --It might be some keys. --It may be a small knife. --It could be a coin.

I must wear a seat belt while driving. Your friend can come in and play with you. You don’t have to hand in the homework now. Y ou may hand it in tomorrow morning.

✧Could you hand me the salt, please? You should talk to him as soon as possible.

I think I may have hurt Marry. He should still be working right now.

Could he be waeting for us at the station?

You look very tired. You must have been working all day.

You must be joking. You can’t be serious.

推测:

**You have been traveling all day. Y ou must be tired.

The computer is on, so someone must be using it.

--Why isn’t John in class?

--He is sick. He must be sick. He may be sick. He chould/might be sick.

~~The restaurant is always empty.

~~It isn’t good. -It can’t/couldn’t be good. -It may not be good. -It might not be good. ** --what did the weatherman say?

--It will rain tomorrow. -It should rain tomorrow. -It maight/could rain tomorrow. This bridge may collapse in an earthquake. We may go camping this summer.

There might/could be a strike next week.

There might/could be a strike next week.* There can’t/couldn’t be a strike next week. VS. ^There should be another earthquake shortly.

^There could/maight be another earthquake shortly.

** --why wasn’t John in class yesterday?

--he was sick. -He must have been sick. – He may have been sick. –He could/might have been sick.

The president should have had a bullet-proof car, as most would leaders do today.

His death could have been prevented, if he had a bullet-proof car.

基本用法:

**能力: can/could/be able to

--My son can play the piano. – my daughter is only four and she can ride a bike.

-- Hey that’s n othing. My dog can count to ten.

Things can get crazy around here sometimes.

Even experienced teachers can make mistakes.

He could run aftrer a bus and catch it ten years ago, but he can’t do that now.

I ran after the bus yesterday and was able to catch it.

Tom, an explorer, and his men were on a plane to the South Pole. The journey was, at first, going well. But soon they ran into serious trouble. It seemd certain that their plane would crash into a mountain. It could only get over the mountains if it rose to 10,000 feet. Tom at once ordered his men to throw out two heavy food supply. The plane was then able to rise and it flew over the mountains by 400 feet. Tom now knew that he would be able to reach the South Pole which was 300 miles away, for there were no more mountains in sight. The aircraft was able to fly over the endless white plains without diffculty.