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(xiàn)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(yīng)用itsapplicationinwriting人類要是早點意識到環(huán)保的重要性，他們就不會成為環(huán)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(lián)系我們。______________________________________________________________________________________________________________________________________________________________________________如果我們早點采取措施應(yīng)對工廠廢水排放引發(fā)的問題，這條河流現(xiàn)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(shè)，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(dǎo)的從句中did（表現(xiàn)在的假設(shè)）haddone（表過去的假設(shè)）would/might/coulddo（表將來的假設(shè)）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(xiàn)的愿望did/were（表“現(xiàn)在的假設(shè)”)would/coulddo(表“將來的假設(shè)”)haddone（表“過去的假設(shè)”)It’s(about/high)time從句：Itis(about/high)timethatsbdid/shoulddoWarning：should不可?。。。∈菚r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(xiàn)在，將來相反)haddone（與過去相反）在forfearthat,incase,lest引導(dǎo)的從句中，若用虛擬語氣時，從句謂語為