表能力和可能性的情态动词

时间:2020-12-13 02:14:02

(单词翻译:单击)

如果想描述一个人有做一件事情的能力(ability),就可以使用固定搭配 “able to” 或情态动词 “can”;如果想描述一个人不具备做一件事情的能力,那么则应该用 “unable to” 或 “can't”。情态动词 “could” 和它的否定形式 “couldn't” 可分别用来谈论一个人在过去是否具有做一件事情的能力。此外,情态动词 “can、could” 和 “might” 都可以用来描述一件事发生的可能性(possibility)。
 
1. He's lived in Russia. He _______ speak Russian fluently.
 
a) can
b) mustn't
c) will have to
d) is better
 
2. Jimi Hendrix was so talented, he _______ play the guitar with his teeth!
 
a) may
b) should
c) could
d) will
 
3. I don't think _______ travel to Mars1 for a long time.
 
a) we have to
b) we should have to
c) we must
d) we'll be able to
 
4. Which of the following sentences expresses possibility?
 
a) That noise must be the protesters marching through the streets.
b) She might have stolen the money – she knew where I kept it.
c) You don't look very well, you should see a doctor.
d) You don't have to submit2 your essay until the 2nd of March.
 
5. The trains aren't running normally3, so there _______ a problem getting to the match on Saturday.
 
a) could be
b) can't be
c) can be
d) should be
 
6. She didn't have a driving license4 then, so she _______ drive a car.
 
a) mustn't
b) can't
c) couldn't
d) shouldn't
 
7. I'm really sorry, but I _______ come to dinner on Tuesday, I've got too much work to do.
 
a) wouldn't
b) couldn't
c) shouldn't
d) won't be able to
 
8. Which of the following sentences expresses ability?
 
a) Students should wear uniforms to school at all times.
b) You can't learn how to ballet dance without going to ballet classes.
c) Where is everyone? They should be here by now!
d) You might find that shirt you want from this shop.
 
答案
1) a, 2) c, 3) d, 4) b, 5) a, 6) c, 7) d, 8) b.

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1 Mars 4oSz63     
n.火星,战争
参考例句:
  • As of now we don't know much about Mars.目前我们对火星还知之甚少。
  • He contended that there must be life on Mars.他坚信火星上面一定有生物。
2 submit OHBzv     
vi.(to)屈服,听从vt.呈送,提交;主张
参考例句:
  • He was losing the fight but he would not submit. 他战败了,但不屈服。
  • I will not submit to such treatment. 我不甘心忍受这样的待遇。
3 normally ln8zVb     
adv.正常地,通常地
参考例句:
  • I normally do all my shopping on Saturdays.我通常在星期六买东西。
  • My pulse beats normally.我脉搏正常。
4 license B9TzU     
n.执照,许可证,特许;v.许可,特许
参考例句:
  • The foreign guest has a license on the person.这个外国客人随身携带执照。
  • The driver was arrested for having false license plates on his car.司机由于使用假车牌而被捕。

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