錯(cuò)綜時(shí)間虛擬條件句與含有but for/without條件句的虛擬（四）

虛擬語(yǔ)氣內(nèi)容的語(yǔ)法點(diǎn)較多,，Master Osifu English這一講繼續(xù)為大家講述虛擬語(yǔ)氣,。大家可以按照虛擬語(yǔ)氣的語(yǔ)法點(diǎn)逐條學(xué)習(xí),，Master Osifu English盡量為大家明晰思路，幫助大家掌握此知識(shí)點(diǎn),。

(一)錯(cuò)綜時(shí)間虛擬條件句：即主句與條件從句的謂語(yǔ)動(dòng)詞所發(fā)生的時(shí)間不一致時(shí),，被稱為“錯(cuò)綜時(shí)間虛擬條件句”。

下面,，Master Osifu English以例句的形式為大家講解,。

（1）If you had taken medicine yesterday, you would feel better now.  要是昨天你吃了藥，現(xiàn)在會(huì)感覺(jué)更好些,。（此處if條件句是對(duì)過(guò)去的虛擬,，故用過(guò)去完成時(shí)，而主句是對(duì)現(xiàn)在的虛擬,，故用would+do的形式,。）

（2）If he were not ill, he would have finished the job. 如果他沒(méi)有生病，他早就完成工作了,。（此處if條件句是對(duì)現(xiàn)在的虛擬,，故用過(guò)去時(shí)，而主句是對(duì)過(guò)去的虛擬,，故用would have done 的形式,。）

(二)but for/without條件句的虛擬：在含有but for/without條件句的虛擬中，首先要判斷句子是哪種情況的虛擬,，是現(xiàn)在情況,、將來(lái)情況還是過(guò)去的情況？

例如：Without water, the fish would die. 沒(méi)有水,，魚(yú)兒會(huì)死的,。

But for the teacher’s help, she could not have passed the exam. 要不是老師的幫助，她不可能考試及格,。

下面讓我們練習(xí)題型的形式來(lái)理解并鞏固此知識(shí)點(diǎn),。

1._____Lucy, we _____ the book last month.

A.Without; would lose   B. If not; will lose   C.But for; would have lost  D.If it is not for; would have lose

解析：答案C.

解題思路，主句的last month給出的信息為過(guò)去,，那么此句為過(guò)去情況的虛擬，故謂語(yǔ)動(dòng)詞為would have done形式,，能與之搭配的只有but for,，所以選C.

2.Without the policemen’s help, they_____their lives.

A.would have lost  B.should lose   C.might lose   D. can lost

解析：答案A.

解題思路，首先判斷此句屬于什么情況的虛擬,，根據(jù)句意,，應(yīng)為過(guò)去情況的虛擬,，故主語(yǔ)應(yīng)為would have done形式，所以選A.

3.I ____sooner but I didn’t know that they were waiting for me.

A.had come  B.was coming  C.would come   D. would have come

解析：答案D.

解題思路,，此題前后句時(shí)間不一致,，為錯(cuò)綜時(shí)間虛擬句，前面的句子表示過(guò)去情況,，故為would have done形式,。所以選D.

4.What a pity. If I had caught that flight, I____over the Pacific Ocean now.

A.would fly   B.would have flown  C. would be flying  D.were flying

解析：答案C.

解題思路，此題if 從句為過(guò)去情況的虛擬,，而主句中now得知為現(xiàn)在情況的虛擬,，是錯(cuò)綜時(shí)間虛擬句，故謂語(yǔ)動(dòng)詞應(yīng)為would+do形式,，所以選C.

以上四題為大家鞏固了這一講的語(yǔ)法點(diǎn),，Master Osifu English希望大家反復(fù)練習(xí)，靈活運(yùn)用,。

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