A级辅导第二部分语法结构5强调句(不打)

（三）强调句
在英语中，有时为了强调某个词、词组或句子，要用强调结构。

它的构成形式是：It is (was) + 强调部分+ that + 从句。

这个句式可用于强调主语、宾语或状语。

真题示例
1. It was because I wanted to buy a dictionary _____ I went downtown yesterday.
(05-6)
A) but B) and C) why D) that
2. It was not until yesterday evening _____ the manager made his decision known. (01-12)
A) when B) that C) as D) so
答案：1. D) 2. B)
Exercises
1. It _____ John and Kate who helped me the other day.
A) is B) was C) are D) were
2. It was only at 7 yesterday evening _____ I saw him turn up at the corner of the street.
A) since B) that C) when D) which
3. It is _____ that she was born, got married, gave births and died.
A) in this town B) this town C) town D) in
4. It was because the applicant was too conceited _____ he failed in the interview.
A) that B) so that C) so D) therefore
5. It is only through practice _____ one will be able to swim skillfully.
A) what B) that C) who D) which
6. _____ she first heard of the man referred to as a specialist.
A) That was from Stephen C) It was from Stephen that
B) It was Stephen whom D) It was Stephen that
答案：1. B) 2. B) 3. A) 4. A) 5. B) 6. C)
六、情态动词、主谓一致
（一）情态动词
情态动词用来表示能力、允诺、劝告、意愿、必须等概念或态度。

它没有人称和数的变化，其后跟不带to的不定式。

从A级考试的情况看，情态动词重点考查其完成式，即“情态动词+ have + V-ed”的形式，这一形式表示对过去情况估计、推测，或对过去已发生的事情的后悔、遗憾、责备等。

具体情况如下：
●“should(ought to) + have + V-ed”表示应该发生而实际上未发生，其否定形式表示本不该发生而实际上发生了。

●“must + have + V-ed”表示对过去情况的肯定推测，意思是“一定发生了……”。

其否定形式用“can’t + have + V-ed”。

●“needn’t + have + V-ed”表示本不必做而实际上做了。

●“may/might/could + have + V-ed”表示对过去发生的动作或状态的可能推测。

真题示例
1. This ATM has been out of service for a few days. It should _____ last week. (04-6)
A) fix C) have fixed
B) be fixed D) have been fixed
2. We didn’t finish the work in time. You _____ us since you were there. (01-12)
A) might help C) could have helped
B) should help D) must have helped
3. Mary has got a full mark in the test. She _____ very hard all these days. (01-6)
A) will work C) must have worked
B) may work D) could have worked
4. Look the trees are fallen. There _____ a strong wind. (00-6)
A) must be C) must have been
B) should have been D) could be
5. Jack must (go) _____ away---- we can’t find him anywhere in the factory. (02-12)
答案：1. D) 2. C) 3. C) 4. C) 5. have gone
Exercises
1. Stephen _____ me a fool.
A) dare not to call C) dares not calls
B) dares not to call D) dare not call
2. He said he would rather not _____ it right now.
A) does B) has do C) do D) has done
3. He told them that you would arrive this morning. He _____ have told them that.
A) mustn’t B) needn’t C) may not D) can not
4. You _____ to have done silly things.
A) had ought B) hadn’t ought C) didn’t ought D) ought not
5. You _____ all those calculations! We have a computer to do that sort of thing.
A) needn’t have done C) must not have done
B) should have done D) can not have done
6. None of us saw him at the party. He _____ it .
A) mustn’t attend C) can’t have attended
B) needn’t have attended D) wouldn’t attend
7. She _____ have missed the first bus, or she _____ be here so early.
A) needn’t, shouldn’t C) shouldn’t, mayn’t
B) couldn’t, can’t D) mustn’t, wouldn’t
8. I _____ the conference held last September in Durham, but I couldn’t afford it.
A) should have attended C) could have attended
B) were to attend D) may have attended
9. Mr. Li _____ be in Beijing because I saw him in town only a few minutes ago.
A) mustn’t B) may not C) isn’t able to D) can’t
10. The composition is too good. It _____ by somebody else.
A) must have been written C) must have written
B) can be written D) must written
答案：1-5 D C B D A 6-10 C B A D A。