一、考綱要求
根據(jù)考綱的要求，虛擬語氣部分主要考查情態(tài)動詞的選擇、虛擬語氣在條件句中、在名詞性從句中、在簡單句中或在日常交際中的使用等基本用法。
二、命題導(dǎo)向
依據(jù)語境來判斷虛擬語氣的不同形式是高考試題的主要設(shè)題方法之一。在近年的中，出現(xiàn)了對陳述語氣與虛擬語氣辨析的考查。虛擬語氣在各種從句中的應(yīng)用是該部分的重點掌握內(nèi)容。
三、復(fù)習(xí)要點
虛擬語氣是一種特殊的動詞形式，說話人陳述的并不是事實，而是表達一種愿望、假設(shè)和猜測等。只有在非真實的條件句中才使用虛擬語氣，如果假設(shè)的條件有可能實現(xiàn)，用真實條件句。如果假設(shè)的條件無法實現(xiàn)或?qū)崿F(xiàn)的可能性很小，則用虛擬語氣。使用虛擬語氣的情況主要有下列幾種：
1. 虛擬語氣在非真實條件句中的運用
(1) if條件狀語從句中的虛擬語氣
非真實條件句表示不可能實現(xiàn)的或?qū)崿F(xiàn)的可能性很小假設(shè)。條件句與主句皆須用虛擬語氣。其虛擬語氣的時態(tài)形式有三種：
�、俦硎九c現(xiàn)在事實相反的假設(shè)，從句的謂語動詞用“動詞過去式(be一般用were)”，主句的謂語動詞用“should (would, could, might)+動詞原形”。例如：
If you were the UN Secretary General, could you stop the wars on the earth?
If he had a chance, he would/should/ might/could choose to study abroad。
�、诒硎九c過去事實相反的假設(shè)，從句的謂語動詞用“had+過去分詞”，主句的謂語動詞用“should (would, could, might)+have+過去分詞”。
【記憶小竅門】可提到句首的詞有三個：had, should和were。諧音記憶：一馬當(dāng)先“還屬我”。
�、呛钐摂M條件句
有時，可不用條件句表示一個非真實的條件，而用一些介詞短語或通過上下文中暗含某種非真實的條件，這種句子叫做“含蓄條件句”。例如：
�、偻ㄟ^with, without, but for和動詞不定式短語等表示虛擬的條件
She’d look better with shorter hair. =if she had her hair cut shorter
Without your help, we could not have completed the task ahead of time. =If it had not been for your help…
But for the heavy snow, I could have gone on holiday. =If there had not been the heavy snow…
She would be shocked to hear the news. =If she heard the news…
It would be easier to do it in this way. =If you did it in this way…
�、诰渲泻衞r, or else, otherwise, but等詞語，暗示句子的某一部分(前句或后句)需用虛擬語氣。
He was on business in Beijing at that time; otherwise he might have helped us。
Luckily Mary telephoned to inform me of the meeting, or would have been I absent。
I should have attended my friend’s wedding ceremony, but I couldn’t afford the time。
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