資源簡介

(共26張PPT)
單詞是基礎；語法是主線；記憶和練習是提高英語的唯一方法。
虛擬語氣
一、英語中的四大語氣
一、英語中的四大語氣
1、陳述語氣
2、疑問語氣
3、祈使語氣
4、虛擬語氣
I like apples. (肯定)
陳述
疑問
What’s your name Do you like apples
祈使
虛擬
If I were a boy, I think that I’d understand, how it feels to love a girl.
Open the door.
一、英語中的四大語氣
一、虛擬語氣在非真實條件句中的運用
A
后悔藥
對過去的虛擬
B
白日夢
對現在的
虛擬
C
妄想癥
對將來的
虛擬
If she had worked hard , she would have gone to QingHua University .
后悔藥—對過去事實的虛擬—歸納謂語:
從句謂語為_________,
主語謂語動詞為__________
had done
would/could/should/might+ have done
Long time ago, a farmer saved a snake. But later, the farmer was bitten by the snake and died.
The Farmer And The Snake農夫與蛇
What would have happened if the farmer hadn’t seen the snake
If the farmer ___________(not see) the snake, he _________________ (not put) it under his coat. If he __________ (not put)it under his coat ,the snake ___________________ (not bite)him.If the snake____________ (not bite)him,he __________________(not die).
hadn’t seen
wouldn’t have put
hadn’t put
wouldn’t have bitten
hadn’t bitten
wouldn’t have died.
與過去事實相反的虛擬語氣：
白日夢—對現在事實的虛擬—歸納謂語:
從句謂語為_________,
主語謂語動詞為__________
did (be-were)
would/could/should/might+do
If I were headmaster, I would make your holiday longer.
If I had one billion , I would give you one million.
如果我是一名億萬富翁，我會建一座圖書館。如果我有足夠的錢，我為每一位學生提供免費的三餐。如果我是超人，我會保衛世界和平。
If I ______ a billionaire, I _____ build a library. If I _____ enough money, I ___________ (supply) free meals to the students. If I ______ a superman, I ______ keep the whole world peace.
were
would
had
would supply
were
would
If you
married
were to marry
should marry
me tomorrow,
I would get the moon for you.r.
妄想癥—對將來事實的虛擬—歸納謂語:
從句謂語為:
主語謂語動詞為:
1.did (be-were)
2.were to do
3.should do
would/could/should/might+do
should give/were to give/gave
would tell
had to
would be
如果上天能夠給我一個再來一次的機會，
我會對那個女孩子說三個字：我愛你。
如果非要在這份愛上加上一個期限，我希望是--一萬年!
If the God _____________________________(give) me another chance，I____________ (tell) the girl three words, “ I love you.” If I ______(have to) set a time limit to our love, it___________ (be)10,000 years!
情況 if從句 主句
與現在事實相反 動詞過去式（be動詞用were） would/could/should/might+動詞原形
與過去事實相反 had+過去分詞
would/could/should/might+動詞原形
與將來事實相反 動詞過去式
would/could/should/might+動詞原形
should+動詞原形 were to+動詞原形 一、虛擬條件句
2.錯綜時間條件句
錯綜時間條件句，又叫混合條件句。主句和從句的動作不是發生在同一時間，其動詞形式要根據時間而定。
If I were you, I wouldn’t have missed the film last night.
(現在—過去)
If he had followed the doctor’s advice, he would recover already. (過去—現在)
If Mary helped Tom do the work today, it would be finished tomorrow afternoon. (現在—將來)
2、錯綜時間條件句→看各自的時態
語法填空.
If we ___________ (catch) the flight yesterday, we would be enjoying our holiday on the beach now.
had caught
易錯點
3. 虛擬條件句的省略與倒裝
If條件句中若含有謂語動詞were, had, should時，可以把if省略，把were, had, should移至主語前，構成倒裝結構。
_____it not been for your generous help, we couldn’t have finished the project punctually.
Had
Were she here, she would agree with us.
Should he agree to go there, we would send him there.
4. 含蓄條件句
有時虛擬的條件并不是直接通過條件句來表示，而是通過一些詞或短語體現出來，如without, but for, otherwise, or, but等，甚至暗含在上下文中，我們稱之為“含蓄條件句”。
Without air, there would be no living things in the world.
沒有空氣，世界上就沒有生物。
But for your help, we couldn’t have finished the work on time.
要不是你的幫助，我們不可能按時完成這項工作。
I forget where I read the article, or I would show it to you now.
我忘記在哪兒讀過這篇文章了，否則現在我會給你看看的。
二、虛擬語氣在賓語從句中的運用
72%
95%
63%
（1）wish后的賓語從句中用虛擬語氣，表示一種不可能實現的愿望
與現在事實相反 wish+從句主語+動詞過去式（be動詞用were）
與過去事實相反 wish+從句主語+had+過去分詞
與將來情況相反 wish+從句主語+would/could+動詞原形
I wish(that) I were a bird and could fly freely in the sky.
I would rather you hadn’t told me about that.
一堅持：insist
二命令：order，command
三建議：suggest，advise，propose，recommend
四要求：require，request，demand，desire，urge
(2)would rather后的賓語從句用一般過去時表示與現在或將來事實相反的事實，用過去完成時表示與過去相反的事實。
(3)表示“建議、命令、要求”等動詞后的賓語從句中需用虛擬語氣，從句謂語動詞用（should+）動詞原形。常見的動詞有：
三、虛擬語氣在主語從句、表語從句和同位語從句中的運用
（1）在 “It is necessary/important/strange/suggested+that從句”中，that引導的主語從句要用虛擬語氣，謂語動詞用“should+動詞原形
It is important/necessary that we (should) think before we decide.
三、虛擬語氣在主語從句、表語從句和同位語從句中的運用
(2）在表示 “建議、命令、主張”等名詞后面的表語從句和同位語從句中用虛擬語氣，謂語動詞用“should+動詞原形”
His proposal is that we (should)get rid of the bad habits.
六、特殊句型中的虛擬語氣
(1)“It is(high/about))time+that從句 ”句型中，從句謂語動詞用動詞過去式或“should+動詞原形(should不能省略)，表示“早該做…；是…的時候了”。
It is time that we took measures to solve the problem.
是我們采取措施解決問題的時候了。
特殊句型中的虛擬語氣
(2)if only表示“要是…就好了”，用虛擬語氣表示愿望。與現在事實相反用動詞過去式；與過去事實相反用“had+過去分詞”；與將來事實相反用“woudmight/could/should.+動詞原形
If only she had spent more time preparing for the contest!
要是她多花，點兒時間準備這次比賽就好了！
在as if/thoug助引導的表語從句或方式狀
語從句中，謂語部分常用虛擬語氣形式，與現在事實相反用動詞過去式；與過去事實相反用)與將來事實相反用"would/might/could/should+-動詞原形
he looks as if nothing had happened to her。
她看起來好像什么事都沒發生似的。
She talks about it again and again as though she would never end.
她反復談論那件事，好像永遠談不完的樣子。
特殊句型中的虛擬語氣

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