第第頁虛擬語氣學案if條件從句的謂語形式主句的謂語形式與現在事實相反If

主語＋did（be用were）主語＋should/would/could/might

do與過去事實相反If

主語＋had

done主語＋should/would/could/might

have

done與將來事實相反If

主語＋did（be用were）

＋should

do

＋were

to

do主語＋should/would/could/might

do虛擬3大省略+倒裝句________________(=Ifitwere)notfortheair,wecouldn’tsurvive._____________(=IfIhad)knownaboutit,Iwouldhavetoldyou.________________(=Ifanyoneshould)call,pleasetakeamessage.虛擬語氣省略與倒裝在寫作中的應用itsapplicationinwriting人類要是早點意識到環保的重要性，他們就不會成為環境惡化的受害者了。______________________________________________________________________________________________________________________________________________________________________________要不是你毫無保留的幫助和無條件的支持，我的一切成就將化為灰燼.______________________________________________________________________________________________________________________________________________________________________________如果你還有什么其他問題，不要猶豫聯系我們。______________________________________________________________________________________________________________________________________________________________________________如果我們早點采取措施應對工廠廢水排放引發的問題，這條河流現在就不會被污染的那么嚴重了。______________________________________________________________________________________________________________________________________________________________________________要不是這次有意義的研學活動，我不會對學習的重要性有了更新更深入的了解。______________________________________________________________________________________________________________________________________________________________________________含蓄虛擬條件句（有假設，無if)，常用的有with，without，butfor，ifonly,or，but；otherwise,分詞等。Iwasillthatday.Otherwise,I_______________________partinthesportsmeet.Hetelephonedtoinformmeofyourbirthday,orI________________________nothingaboutit.Butforyourhelp,I__________________succeeded.Withoutyouhelp,I_________________________somuch.I_________________________youmorehelp,butIwastoobusy.幾種特殊的虛擬語氣虛擬語氣用在asif(asthough)引導的從句中did（表現在的假設）haddone（表過去的假設）would/might/coulddo（表將來的假設）賓語從句中的虛擬語氣，“wish+賓語從句”“ifonly+句子”用在虛擬語氣中,表不能實現的愿望did/were（表“現在的假設”)would/coulddo(表“將來的假設”)haddone（表“過去的假設”)It’s(about/high)time從句：Itis(about/high)timethatsbdid/shoulddoWarning：should不可省！！！是時候呼吁學生投入適當時間來反思自己的學習問題了。__________________________________________________________________________________________________________________________________________________It/Thisisthefirst/secondtimethatsb____________________It/Thiswasthefirst/secondtimethatsb__________________wouldrather寧愿……did(與現在，將來相反)haddone（與過去相反）在forfearthat,incase,lest引導的從句中，若用虛擬語氣時，從句謂語為