情态动词 “should、shouldn’t” 以及搭配 “had better” 可以用来给他人提出建议；而情态动词搭配 “can be”、“could be” 和 “might be” 则被用来推断一件事情的真实性和可能性。做下面的八道习题，根据提示和句意来选择能表示建议 “advice” 或推断 “deduction” 的情态动词。

1. Complete the sentence so it expresses deduction.
He _______ Spanish, because he’s wearing a Spanish football top.

a) should be

b) can be

c) would be

d) might be

2. Complete the sentence so it expresses advice.
You really _______ start thinking about what job you want to do for the rest of your life.

a) should

b) will

c) could

d) would

3. Complete the sentence so it expresses deduction.
He’s not answering his phone. He _______ sleeping – it’s midnight!

a) couldn’t be

b) could be

c) mustn’t be

d) can’t be

4. Which of the following sentences expresses deduction?

a) You should take a holiday – you look like you need a break.

b) You must get up early if you want to do a good day’s work.

c) You’d better get a pension so you can save for retirement.

d) She always looks exhausted – she must have a very stressful job.

5. Complete the sentence so it expresses advice.
I think _______ take your coat and scarf – there’s a storm approaching.

a) you’d better

b) you could

c) you can

d) you’ll

6. Complete the sentence so it expresses advice.
You _______ give up on your dreams!

a) couldn’t

b) wouldn’t

c) shouldn’t

d) won’t

7. Complete the sentence so it expresses deduction.
That _______ Claudine, she’s got long hair and she’s much taller.

a) wouldn’t be

b) shouldn’t be

c) had better be

d) can’t be

8. Which of the following sentences expresses advice?

a) You’d better get some sleep, you’ve got an important interview tomorrow.

b) You must not enter the warehouse without a helmet.

c) I could help you to move to your new apartment next week.

d) The doctor will tell you what’s best for you.

答案

1) d, 2) a, 3) b, 4) d, 5) a, 6) c, 7) d, 8) a.