2020湖南专升本英语语法讲解：虚拟语气用在其它名词性从句中

虚拟语气用在其它名词性从句中
1.虚拟语气用在suggest,demand,insist,ask,move,advise.desire,order,propose,require,recommend,request,maintain,vote等表示建议，命令，请求的动词后的宾语从句中，从句的谓语用should+原形动词，但美国英语中常要省去should。例如：
I suggest we start at once.
They propose that you(should)read the rules carefully.
The commander ordered that the soldier fire at the enemy.
He insisted that he go there on foot.
I move that the meeting be adjourned.我提议休会.move:(在会议上)提议，动议
Example:
He insisted that we all ______ in his office at one o'clock.
a.be b.to be c.would be d.shall be
He asked that it ______ done right away.
a.is b.be c.shall be d.must be
He recommended that John ______ with him.
a.must go b.went c.will go d.go
2.虚拟语气用在It is+形容词（或过去分词）+that....的主语从句中，表示要求，建议，提议，命令，请求等，英国英语中从句的谓语用“should+原形动词（或完成式）构成”，而美国英语中则要求用原形动词。该句型中常用的形容词或过去分词有：advisable,desirable,essential,important,better,keen,natural,necessary,probable,possible,strange,vital,desired,demanded,requested,suggested,recommended,required等。例如：
It is necessary that the machine(should)be oiled once a week.
It is important that everyone(should)obey the law.
It is suggested that you take a walk after supper.
Example:
It is necessary that he ______ in time to attend the meeting.
a.come b.came c.would come d.need come
It was proposed that the matter ______ discussed at the next meeting.
a.would be c.will be c.was d.be
It is strange that she ______ in the last examination.
a.should have failed b.have failed c.would fail d.failed
3.虚拟语气用在与表示建议，要求，提议，命令，请求等意思有关的同位语从句和表语从句中，英国英语中要求从句谓语用“should+原形动词”，而美国英语中则要求用原形动词，但在as if,as though引导的表语从句中，从句中谓语用动词过去式或过去完成式，表示对现在或过去的虚拟。例如：
He complied with the requirement that the experiment(should)be done tomorrow.
他同意明天再做实验的要求。虚拟语气用在其它名词性从句中
He looks as if he were tired.他面带倦容。
We agree to the suggestion that they(should)work on night shifts in turn.
我们同意轮流值夜班的建议。
His order is that you(should)send the materials to the work site at once.
他的命令是你们要把材料立即送到工地。
Example:
Your advice that she ______ till next week is reasonable.
a.will wait b.is going to wait c.waits d.wait
Jane appears as though she ______ the secret.
a.knows b.has known c.had known d.knew
He looked as if he______ ill for a long time.
a.was b.were c.has been d.had been
4.虚拟语气用在It is(high,about)time(that)句型中，定语从句中谓语用动词过去式，意指将来。例如：
It is time(that)we went home.
It is high time we had the meeting.
It is time you left.
It is time that I was off.
注：如果主语是单数第一，三人称，动词be常用was。
Example:
We've been sitting here doing nothing about it for days.It's time we ______ the problem.
a.shook hands with b.got to brass tacks with
c.got to grips with d.reached the bottom of
词组get(or come)to grips with为“开始努力对付”。
It is high time we _______ off.
a.are b.were c.be d.will be
It is ______ we did something about redecorating the sitting room.
a.high time b.long time
c.good time d.full-time