虛擬語氣教案if條件從句的謂語形式主句的謂語形式與現(xiàn)在事實(shí)相反If主語+did(be用were)主語+should/would/could/mightdo與過去事實(shí)相反If主語+haddone主語+should/would/could/mighthavedone與將來事實(shí)相反If主語+did(be用were)+shoulddo+weretodoiiS+should/would/could/niightdo?虛擬3大省略+倒裝句Wereit(=Ifitwere)notfortheair,wecouldn'tsurvive.HadI(=IfIhad)knownaboutit,Iwouldhavetoldyou.Shouldanyone(=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(diǎn)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。Ifpeoplehadrealizedthesignificanceofenvironmentprotectionearlier、theywouldn'thavefhllenviclimloiheenvironmenlaldegradalion.HadpeoplerealizedthesignificanceofenvironmentprotectioneaHieatheywouldn'thavefallenvictimtotheenvironmenlaldegradation.(倒裝).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.)Ifilhadn'tbeenfbryourunreservedhelpanduncondilionalsupport、allmyachievementswouldlurnloashes.）Hadi（nolbeenforyourunreservedhelpanduncondilionalsuppon,allmyachievemenlswouldlurnI。ashes.（倒裝）.如果你還有什么其他問題，不要猶豫聯(lián)系我們。Ifyoushouldhaveanyfartherquestions,pleasedon'thesitatetocontactus..如果我們早點(diǎn)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(yán)重了。Ifwehadlakeneffectivemeasures[owrestlewith/tackle/handletheproblemarisingfromindustrialwasteemissionmuchearlier,iheriverwouldnolbepollutedsoseriouslynow..要不是這次有意義的研學(xué)活動，我不會對學(xué)習(xí)的重要性有了更新更深入的了解。Buifb”Wilhoulihisrewardingstudytrip,Iwouldn'thavegolanewanddeeperinsighlintoUiesignificanceofstudy.?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,Iwouldhavetaken（本會參力口）partinthesportsmeet.Hetelephonedtoinformmeofyourbirthday,orIwouldhaveknown（本不會知道）nothingaboutit.Butforyourhelp,Iwouldhaveknown（本不會成功）succeeded.Withoutyouhelp,Iwouldn'thaveachieved（本不會取得如此多成就）somuch.Ishouldhavegiven（本應(yīng)該給你）youmorehelp,butIwasloobusy.?幾種特殊的虛擬語氣1.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)）2.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(shí)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)”)Ifs(about/high)time從句：Itis(about/high)timethatsbdid/shoulddoWarning：should不可省?。。∈菚r候呼吁學(xué)生投入適當(dāng)時間來反思自己的學(xué)習(xí)問題了。Itisabout/highlimeweappealedloihesludenlslodevole/commit/dedicaleaproperamounloflimeloicflcctingontheirlearningproblems.It/Thisisthefirst/secondtimethatsbhavc/hasdoneIt/Thiswasthefirst/secondtimethatsbhaddone)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：(shou