iii. 虚拟语气用于同位语从句和表语从句中

1. 用在表示建议、要求、命令、遗憾、主张、怀疑、惊奇等的同位语从句中和表语从句中，从句谓语用“should +动词原形”。

His proposal is that the physical experiment (should) be done again.

他的建议是应该再做一次物理实验。

It is my suggestion that we should go to America for further study.

我的建议是我们应该去美国进修。

2. 常见的这类名词有：suggestion, order, advice, idea, plan, pity, proposal等。

My plan is that we (should) start earlier than usual next time.

我的计划是我们下次比往常早一点动身。

Tom has a good idea that he (should) invite his classmates to take part in his birthday party.

汤姆有个好主意，即他应该邀请他的同学来参加他的生日晚会。

3. 常见的这类形容词有：necessary, essential, strange, natural, urgent, funny, important等。

It is necessary that all the inventions (should) be used for good, not for evil.

所有的发明都应该用在善良的方面而不是邪恶，这一点很有必要。

It is important the we (should) study English.

我们应该学习英语，这很重要。

4. 以动词的过去分词充当的这类形容词有：suggested, requested, ordered, proposed, decided, recommended等。

It was decided that the meeting (should) be put off till next Saturday.

已经决定会议应该推迟到下周六。

It was arranged that they (should) leave the following week.

已安排好他们下周动身。

5. 在It's (high) time that ...句式中，谓语动词要用过去式或should do, should不能省略。

It's high time that you went to see your sick mother.

你早该去看你生病的妈妈了。

It's high time that we should put all our heart to study.

我们早该把心思都放在学习上了。

专项练习

1. It is essential that every child _______ the same educational opportunities.

A. has

B. could have

C. have

D. had

2. The workers are working hard to meet the request that the railway _______ to traffic on May 1.

A. is open

B. will be open

C. be open

D. must open

3. It's necessary that a student _______ English well.

A. learns

B. learn

C. must learn

D. learned

4. The teacher made a suggestion that students _______ more oral English practice.

A. were given

B. had been given

C. should give

D. be given

5. It's necessary that the students _______ take notes in class.

A. should

B. must

C. would

D. are to

6. We are all for Mary's suggestion that the discussion _______

A. is put off

B. puts off

C. to be put off

D. be put off

7. It is the teacher's suggestion that every student _______ an English dictionary.

A. has

B. have

C. had

D. having

8. He gave orders that the prisoners _______ free.

A. are set

B. were set

C. set

D. be set

9. I think it's high time you _______ action.

A. take

B. took

C. are taking

D. will take

10. It is time _______.

A. we go to bed

B. he goes to bed

C. we went to bed

D. he go to bed

答案速查　1-5　CCBDA　6—10　DBDBC