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历年英语四级考试中常见的考察词汇题型

5

虚拟语气

一、虚拟语气的规则用法:

1主、从句都表示与过去事实相反:

从句的谓语动词用:had + 动词过去分词

主句的谓语动词用:情态动词 + have + 动词过去分词

注意:能用于虚拟语气的情态动词只有四个:should, could, would, might.

使用哪一个情态动词要由句子含义决定,考试中出现最多的是could, would.

2 主、从句都表示与现在事实相反:

从句的谓语动词用:动词过去式(如果是be则只能用were

主句的谓语动词用:情态动词 + 动词原形

3 主、从句都表示与将来事实相反:

从句的谓语动词用:were to + 动词原形(重点)、should + 动词原形、动词过去式;

主句的谓语动词用:情态动词 + 动词原形

二、虚拟语气的特殊应用:

1 would rather + 句子,这时句子谓语动词用一般过去时来体现虚拟语气。

2 if only 如果,要是...就好了,if only + 句子,这时句子一定要用虚拟语气。

有两种形式可以体现虚拟语气:

a. 如果该句子如果表示与现在或将来事实相反,谓语动词用一般过去时。

b. 如果该句子如果表示与过去事实相反,谓语动词用过去完成时。

70. Look at the terrible situation I am in! If only I _B_ your advice.

A follow   B had followed   C would follow   D have followed

47. If only the committee _D_ the regulations and put them into effect as soon as possible

A approve   B will approve   C can approve   D would approve

注意:当if only后的句子表示与现在或将来事实相反,该用动词过去式来表示虚拟语气,而选项中又没有时,可以采用这种形式:would + 动词原形

3 当以下动词后加句子时,句子应用虚拟语气,句子谓语动词的形式是:(should+ 动词原形

a. 表示建议、提议的:suggest, advise, propose, recommend, move.

[move只有在表达在会议上提出提议时后面加虚拟语气]

b. 表示要求的:ask, demand, require, request, desire.

c. 表示指挥、命令的:order, command, direct.

d. 表示坚持,坚持认为的:insist.

4 it is + 第三点中动词的过去分词 + that引导的从句。

这样的结构中从句谓语动词形式为:(should+ 动词原形

以下几个形容词置于该结构中时也要用相同的形式来体现虚拟语气:

important, necessary, essential, obligatory(有义务的,强制性的,必须的)。

5 第三点中动词相应的名词形式 + that引导从句,该从句同样要用虚拟语气,

谓语动词形式为:(should+ 动词原形

经常用于这种结构的词有:suggestion, advice, proposal, recommendation, motion.

6 以下一些表达方式所在的句子一定要用虚拟语气。

or(表示否则), otherwise, unless, but for(若不是,若非)

当遇到含有以上四个表达方式的句子时,先要判断该句是表示与现在、过去、还是将来事实相反,然后依照相应的虚拟语气规则用法的形式来确定句子结构。

含有下面三个表达方式的句子体现虚拟语气的形式是固定的:

lest(以免,防备), for fear that(惟恐), on condition that(..条件下)

它们后面句子的谓语动词的形式都是:(should+ 动词原形

7 it is time ...的时候了。

这个结构有以下两种变形形式,所用虚拟语气形式都一样:it is high time / it is about time.

这三个结构后面加的句子谓语动词都用一般过去时来体现虚拟语气。

8 注意以下两种情况下should + 动词原形should不能省略。

这里should表示一种语气,经常被翻译成“竟然”。

a. 四个动词:think, believe, expect, suspect.

它们的否定或者疑问形式后面加句子,句子谓语动词用:should + 动词原形should不能省略。

I don't believe that he should be cheated. 我不相信他也会被骗。

b. it is a pity, it is a shame 真遗憾,it is strange 真怪

以上三个结构后面加的句子谓语动词用:should + 动词原形should不能省略。

错综时态的虚拟语气

错综时态的虚拟语气即指主句和从句在表达是与什么时态的事实相反上并不一致(比如主句要表达与现在事实相反而从句要表达与过去事实相反),这种情况要采用“对号入座”的方法来处理,即主从句结构分别采用与其表达时态对应的结构。

60. If I hadn’t stood under the ladder to catch you when you fell, you _A_ now.

A wouldn't be smiling   B couldn't have smiled   C won't smile   D didn't smile

2. If you had studied the problem carefully yesterday, _C_.

A you won’t find any difficulty now   B you would not have found any difficulty now

C you would not find any difficulty now   D you have not found any difficulty now

3. He would be studying at the university now if he _C_ the entrance examination.

A passed   B have passed   C had passed   D should have passed

16. It is a shame that he _B_ that poor little girl!

A deceived   B should deceive   C deceive   D deceiving

18. Mrs. bliss kept the door and the windows shut lest the noise outside _D_ her son's sleep. [lest(以免,防备) 后面句子的谓语动词的形式都是:(should+ 动词原形]

A would interfere with   B had interfered with

C interfered with   D should interfere with

-------------------------1996-01-------------------------

21. The fifth generation computers, with artificial intelligence, _C_ and perfected now.

A) developed   B have developed   C are being developed   D will have been developed

22. This ticket _C_ you to a free meal in our new restaurant.

A gives   B grants   C entitles   D credits

A,B两项都要加双宾语,结构为:gives / grants sb. sth.

entitle sb. to sth. 使某人有权得到某物; credit A to B 相信A是由B造成的。

相信飞机失事是由飞行员错误造成的。 Credit the crash to the pilot's mistake.

crash 坠落,坠毁(专指飞机失事); collision 碰撞(强调两个物体碰撞,如火车、汽车等)。

we are sorry, very sorry, terribly sorry, awfully sorry.

23. You _D_ her in her office last Friday; she's been out of town for two weeks.

A needn't have seen   B must have seen

C might have seen   D can't have seen

24. That was so serious a matter that I had no choice but _D_ the police.

A called in   B calling in   C call in   D to call in

have no choice but to do sth. 别无选择,只能做...

25. She was so _B_ in her job that she didn't hear anybody knocking at the door.

A attracted   B absorbed   C drawn   D concentrated

be attracted by 所吸引; be absorbed in 全神贯注(专注)于做

be drawn in 被诱骗(诱使)做... concentrate on 专注于。

I was simply drawn in. 我是被诱骗上钩的。

27. At first, the speaker was referring to the problem of pollution in the country, but halfway in her speech, she suddenly _B_ to another subject.

A committed   B switched   C favoured   D transmitted

switch to another subject 转换话题; switch to another channel 转换频道。

28. It is politely requested by the hotel management that radios _C_ after 11 o'clock at night. [虚拟语气]

A were not played   B not to play   C not be played   D did not play

29. Although I like the appearance of the house, what really made me decide to buy it was the beautiful _D_ through the window.

A vision   B look   C picture   D view

view n. 景色,风景,视野,视域。

30. Cancer is second only _B_ heart disease as a cause of death.

A of   B to   C with   D from

具有比较意味的形容词都要与介词to搭配。

32. The manager needs an assistant that he can _A_ to take care of problems in his absence. [in his absence 在某人不在场的情况下]

A count on   B count in   C count up   D count out

presence n. 到场,出席; in one’s presence 在某人在场的情况下。

count on=depend on 指望,依靠,依赖; count up 算出总数;

count in 算在内; count out ...排除在外。

33. The organization had broken no rules, but _A_ had it acted responsibly.

A neither   B so   C either   D both

34. We gave out a cheer when the red roof of the cottage came _D_ view.

A from   B in   C before   D into

come into view 进入视野,进入眼帘。 cheer n. 欢呼; cheers 干杯;

cheer-team 拉拉队; cheer-leader 拉拉队长。英语中为了干杯用介词to引起。

to your health 为了你的健康干杯; to friendship为了友谊干杯。 bottom up 先干了。

35. They took _D_ measures to prevent poisonous gases from escaping.

A fruitful   B beneficial   C valid   D effective

take effective measures 采取有效措施。 valid adj. 有效的,成立的。

36. Doing your homework is a sure way to improve your test scores, and this is especially true _A_ it comes to classroom tests.

A when   B since   C before   D after

sure 做定语时表示“可靠的、稳妥的”。 come to 谈到,提及。

37. Careful surveys have indicated that as many as 50 percent of patients do not take drugs _D_ directed.

A like   B so   C which   D as

drug n. 药品,毒品。 gay adj. 放荡的,快乐的; n. 同性恋者,尤指男性同性恋。

so后面加过去分词表示一种程度。 as后面加过去分词时表示“如同那样,正如那样”。

53. I hope all the precautions against air pollution, _D_ suggested by the local government, will be seriously considered here.

A while   B since   C after   D as

precautions n. 防治措施; precautions against 防治的措施。

after being + 过去分词,注意:after后面不能直接加过去分词。

38. In developing countries people are _C_ into overcrowded cities in great numbers.

A breaking   B filling   C pouring   D hurrying

pour into 涌入,蜂拥而入。 break into 强行闯入。

39. It's reported that by the end of this month the output of cement in the factory _A_ by  about 10%. [output 产量]

A will have risen   B has risen   C will be rising   D has been rising

表达将来的行为在将来某时间之前完成用将来完成时。

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