2018考研英語(yǔ):重點(diǎn)語(yǔ)法解析(2)

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       有的考研er遇到長(zhǎng)難句的語(yǔ)法,就會(huì)感到迷茫,無(wú)所適從;其實(shí)英語(yǔ)里的所有句子,不管句子多長(zhǎng),結(jié)構(gòu)多么復(fù)雜,看起來(lái)多難,無(wú)外乎是由英語(yǔ)中的8種句子成分(即:主語(yǔ)、謂語(yǔ)、賓語(yǔ)、表語(yǔ)、補(bǔ)語(yǔ)、定語(yǔ)、狀語(yǔ)、同位語(yǔ))組合而成,或者說(shuō)是在英語(yǔ)中的5種基本句型(即:主謂結(jié)構(gòu)、主謂賓結(jié)構(gòu)、主系表結(jié)構(gòu)、主謂雙賓結(jié)構(gòu)、主謂賓賓補(bǔ)結(jié)構(gòu))的框架之上添加修飾成分?jǐn)U展而來(lái)的,所以只要掌握了一些重點(diǎn)的語(yǔ)法,再長(zhǎng)再難的句子就都迎刃而解了。 

  二、特殊形式的虛擬語(yǔ)氣

  虛擬語(yǔ)氣的特殊形式,即用來(lái)表示要求、的建議、的命令、的提議、的意愿等的主語(yǔ)從句、的賓語(yǔ)從句、的表語(yǔ)從句和同位語(yǔ)從句中的虛擬形式,其虛擬語(yǔ)氣的構(gòu)成往往是由should(可省略)+動(dòng)詞原形that從句。

  A、的 用于表示意愿、的建議、的命令、的提議、的請(qǐng)求等動(dòng)詞后的that賓語(yǔ)從句中,這類(lèi)動(dòng)詞有:

  ask要求 advise建議 arrange安排 beg請(qǐng)求

  command命令 decide決定 demand要求 desire渴望

  determine決定 insist堅(jiān)持 intend打算 maintain堅(jiān)持主張

  move建議,動(dòng)員 propose提議 object反對(duì) order命令

  prefer建議 require 需要 request要求 resolve下決心

  recommend推薦 suggest建議 stipulate約定,規(guī)定 urge強(qiáng)調(diào),促進(jìn)

  vote公認(rèn),提議 decree頒布(法令) pray請(qǐng)求

  注意:這類(lèi)動(dòng)詞后面除了可接that虛擬句以外,也可以接doing或者to do…來(lái)表達(dá),一般情況下,意思沒(méi)有什么差別。

  She advised that we should keep the gate locked.(書(shū)面體)

  She advised us to keep the gate locked.(口語(yǔ))

  She advised keeping the gate locked.(較隨便)

  B、的用于It is+形容詞或過(guò)去分詞+主語(yǔ)從句中,這類(lèi)形容詞或分詞有:

  advisable合理的 decided決定的 crucial關(guān)鍵的 appropriate恰當(dāng)?shù)?/p>

  (11)動(dòng)詞原形表示虛擬

  動(dòng)詞原形直接用在句子中也被看作是一種虛擬,最常見(jiàn)于正式文體中,動(dòng)詞原形一般用在條件從句中,有時(shí)倒裝置于句首,同時(shí)這種用法也常見(jiàn)于獨(dú)立句中表達(dá)愿望。

  God bless you!

  All magnets behave the same, be they large or small.

  She’ll be sixteen years odd, com May.(come May =when May come).

  If that be so, we shall take action at once.

  determined決定的 commanded命令的 arranged安排的 essential緊要的

  complied遵照 anxious焦急的 imperative迫切的 important重要的

  desirable合意的 better較好的 insistent堅(jiān)持的 desired想要

  asked請(qǐng)求 keen渴望的 incredible難以置信的 adamant堅(jiān)定不移的

  natural自然的 insisted堅(jiān)持 necessary必要的 suggested建議

  urgent緊迫的 ordered命令 shocked震驚的 vital極其重要的

  possible可能的 strange 奇怪的 preferable (好一點(diǎn))proposed提議

  requested要求的 required要求的 recommended推薦 resolved決定的

  probable(可能的) pity可惜,憾事 shame遺憾

  注意:這類(lèi)形容詞后面除了可接that虛擬句以外,也可以for…to do…

  來(lái)表達(dá),一般情況下,意思沒(méi)有什么差別。

  It is essential that he should be prepared for this.

  It is essential for him to be prepared for this.

  C.用于由表示建議、的要求、的命令、的請(qǐng)示等含義的名詞引導(dǎo)的表語(yǔ)從句和同位語(yǔ)從句中,這類(lèi)名詞常見(jiàn)的有:

  advice忠告 decision決定 demand要求 desire要求、的愿望

  insistence堅(jiān)持 motion提議 necessity必要性 order命令

  preference偏愛(ài) proposal提議 pray懇求 recommendation推薦

  request要求 requirement要求 resolution決心 suggestion勸告、的忠告

  例如:

  This is their resolution that extra-curriculum activities be made part of their school life.這是他們的決議:要使得課外活動(dòng)成為他們學(xué)校生活的一部分。

  The motion that the remark of the last speaker be expunged from the record.該提議要求把最后一個(gè)發(fā)言的人的講話(huà)從記錄上除掉。

  三、混合虛擬語(yǔ)氣

  有時(shí)主句和從句的謂語(yǔ)動(dòng)詞指不同的時(shí)間,這時(shí)需要用混合虛擬語(yǔ)氣。一般來(lái)說(shuō),在這種情況下,主從句謂語(yǔ)動(dòng)詞指代的時(shí)間不同,所以我們又可以錯(cuò)綜時(shí)間條件句,在這種虛擬情況,動(dòng)詞形式應(yīng)根據(jù)實(shí)際情況靈活使用,在做這些題目時(shí)候尤其要注意每道題目的提示語(yǔ):時(shí)間狀語(yǔ)。絕大多數(shù)情況下,從句或者主句都有相關(guān)的時(shí)間狀語(yǔ),這是我解題的關(guān)鍵。

  If you that late movie last night, you wouldn’t be so sleepy.

  A. haven’t watched B. didn’t watch

  C. hadn’t watched D. wouldn’t have watched 答案選C。

  Many dead would now be alive if they have not attempted to return for something.

  Had Paul received six more votes in the last election, he would be our chairman now.

  混合虛擬語(yǔ)氣還有一種情況就是事實(shí)和虛擬假設(shè)的混合句,這樣的句子不僅僅是時(shí)間的不同,而重要是事實(shí)和假設(shè)的混合。

  I would have gone to visit him in the hospital had it been at all possible, but I was fully occupied the whole of last week.

  該句前半部分是假設(shè)虛擬,而后半部分是事實(shí)的陳述。

  Your math instructor would have been happy to give you a make-up examination had you gone and explained that your parents were ill at the time.

  該句前半句用的是假設(shè)虛擬,后半句主句也用的是假設(shè)虛擬(如果你去并且解釋的話(huà)),但是后半句的從句用的是事實(shí)語(yǔ)氣,因?yàn)?ldquo;父母病了”是客觀(guān)事實(shí),故不需要用虛擬形式had been。

  四、含蓄虛擬條件句

  含蓄條件句是指句中沒(méi)有明顯的虛擬條件句,而是利用其他手段來(lái)暗示存在虛擬條件。但是這類(lèi)隱含式虛擬條件句往往都可以轉(zhuǎn)化為if引導(dǎo)的條件句。常來(lái)表示含蓄虛擬條件的手段有:

  (1)介詞或介詞短語(yǔ),如but for, but that, without, in case of, under more favorable condition等。

  the leadership of the party, we could not be living a happy today.=If there hadn’t been the leadership of the party, we could not be living a happy today.

  A. In spite of B. But for C. Because of D. As for 答案選B。

  But that she was afraid, she would have said no.

  (2) 連詞,如:so that, unless, in case, supposing, lest, provided(倘若……),for fear that(唯恐),in order that, on condition that, if only(要是……就好了)等。

  She listened carefully in order that she might discover exactly what he wanted.=if she listened carefully ,she might discover exactly what he wanted.

  If only I had more money, I could buy a car.

  (注:lest, for fear that 和 in case 引起的從句中謂語(yǔ)動(dòng)詞多用should+動(dòng)詞原形,但可以不用虛擬語(yǔ)氣,而用動(dòng)詞的陳述語(yǔ)氣形式。)例如:

  The foreign teacher spoke slowly in case we misunderstood him. 這位外籍教師說(shuō)得很慢以免我們聽(tīng)不懂。

  Care must be taken in using this method lest overflow should occur.在使用此法時(shí)要小心謹(jǐn)慎,以免會(huì)發(fā)生溢流現(xiàn)象。

  (3)通過(guò)上下文及內(nèi)在含義,句中往往有but, otherwise, unfortunately等類(lèi)似轉(zhuǎn)折詞。 I thought the children when we returned home, but they were still awake.

  A. were sleeping B. would be sleeping C. had been sleeping D. would sleep選擇 B。

  (4)形容詞及其比較級(jí)

  A more careful person would not have made so many mistakes.

  A less conscientious man wouldn’t have tried so hard to get this job done.

  (5)分詞短語(yǔ)

  Having known in time, we might have prevented the accident.

  Born ten days earlier, the boy could have seen his late father.

  (6)動(dòng)詞不定式短語(yǔ)。一般intended/meant/hoped/wished/planned 或 was/were+不定式完成式或had intended/meant/planned/hoped/wished/+不定式一般式表示虛擬。

  I intended I should call on you, but I was busy at that time.

  To hear him speak French, you would take him for an Englishman.

  She would be stupid not to accept his invitation.

  It would be easier to do it this way.

  (7)名詞短語(yǔ)和名詞+and結(jié)構(gòu)

  A judicious man would not have committed suicide.

  A diligent student would have worked harder.

  (8)獨(dú)立主格結(jié)構(gòu)

  All things considered, the price would be reasonable.

  (9)定語(yǔ)從句

  Anyone who had been in your position would have done the same.

  A nation, which stopped working, would be dead in a fortnight.

  (10)情態(tài)動(dòng)詞完成式暗示虛擬語(yǔ)氣:

  I should have called to make an airline reservation, but I didn’t.

  The porter ought to have called the fire-brigade as soon as he saw the fire in the stock, which went up in smoke.

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