高三英語非真實條件句If的用法

Unit1Art

GrammarSubjunctiveMood

AGuessingGameHowolddoyouthinkIam?

SubjunctiveMood(I)虛擬語氣

WhatisSubjunctiveMood?InChinese:

虛擬表示說話人所說的話不是事實,而是一種假設(shè),愿望,懷疑或推測.

虛的，假的，扯淡的真實Ouraims:Today,wearegoingtolearn

1.Knowaboutthreesentencestructuresof“If”.

2.MastertheusageofSubjunctiveMood.Whatwillyoudoifitrainstomorrow?Iwillstayathomeifitrainstomorrow.陳述語氣！真實條件句用于陳述語氣,假設(shè)的情況可能發(fā)生,其中if是“如果”的意思條件從句一般現(xiàn)在時

主句

will\shall+動詞原形IfIwereyourteacher,Iwouldgiveyounohomework.虛擬語氣Ifyou

wereoneofthemnow,would/should/could/might

youdo

thesamething?cheatintheexamusemobilephoneinclasssleepinclassIfyou

wereoneofthem,would/should/could/might

youdo

thesamething?climboverthetrafficrailslitter不許插隊?。umpthequeuedumptheleftoveronthetables（倒剩飯菜在桌子上）IfIwereyourteacher,Iwouldgiveyounohomework.IfIwereoneofthem,Iwouldnotcheatintheexam.IfIwere

thestudent,Iwouldnotuse

themobilephoneinclass.IfIwereoneofthem,Iwouldnotdumptheleftoveronthetables（倒剩飯菜在桌子上）.IfIwere

theman,Iwouldjumpthequeue.Watchandlearn:If+主語+

,主語+

.以上例句談?wù)摰亩际桥c

事實相反的情況現(xiàn)在did(were)would/should/could/might+動詞原形Conclusion:situationsIfIwere_____,Iwould/could/should/might_____.Talkaboutimaginarysituationsinthepast

MrBlackhadanaccidentbecausehemadeaphonecallwhiledriving.If

MrBlackhadnotmadeaphonecall,hewould/could/should/mightnothavehadanaccident.IfLiLeiwassosleepythathefellasleepwhilehavingclass.IfIfLiLeihadnotbeensosleepy,hewouldnothavefallenasleepwhilehavingclass.If+主語+

,主語+

.以上例句談?wù)摰亩际桥c

事實相反的情況過去haddonesthwould/should/could/might+havedoneConclusion:IfitwereSundaytomorrow,whatwould

youdo?.IfIwon/shouldwin/wereto

winthelottery(彩票)oneday,Iwould…Whatwouldyoudoifyouhad/shouldhave/wereto

have

alotofmoney?IfitwereSundaytomorrow,Iwouldgotoseeafilm.IfitwereSundaytomorrow,Iwouldgotoplaycomputergames.IfIwon/should/wereto

winthelottery(彩票)oneday,Iwould

help

somepoorpeople.Watchandlearn:以上例句談?wù)摰亩际桥c

事實相反的情況If+主語+

,主語+

.將來did(wereto/shoulddo)would/should/could/might+動詞原形Conclusion:虛擬語氣主從句的謂語形式時間If從句的謂語形式主句的謂語形式現(xiàn)在過去將來did/werehaddonewould/could/should/might+V.(原)would/could/should/might+have+p.p.1.did/were2.shoulddo3.weretodowould/could/should/might+V.(原)practiceIfI____wherehelivedyesterday，I____anotetohim.knew，wouldB.hadknown，wouldhavesentC.know，wouldsendD.knew，wouldhavesent2.Ifmyfather_____herenow,he______tellmewhattodo.were;wouldwere;willis;wouldis;will3.IfI_____inthe22ndcentury,I________myvocationinaverydifferentway.shouldlive;wouldspendwilllive;shouldspendareliving;shouldhavespentwillbeliving;wouldhavespent4、Thevolleyballmatchwillbeputoffifit___.

A.willrain

B.rainsC.rainedD.israined答案B真實條件句主句為將來時,從句用一般現(xiàn)在時。合作探究1.翻譯：如果明天下雨，會議就會被推遲。Ifitshould/weretoraintomorrow,themeetingwouldbeputoff.=____itrain/____ittoraintomorrow,themeeting______putoff.翻譯：如果他昨天見到你，他就會歸還你的書。Ifhehadseenyouyesterday,

hewouldhavereturnedyourbook.=_____heseenyouyesterday,hewouldhavereturnedyourbook.

if的省略如果條件句中有were,had,should

等助動詞，可將if省略，而把were,had或should置于句首,來表達以if引導(dǎo)的條件句的相同意思。wereShuoldwouldbe

Had2.含蓄條件句與主句.

即用without,butfor,or(else)代替if從句。Eg：Without/Butforhishelp,we__________(make)suchgreatprogress.＝Ifwe_______hishelp,wewouldn’thavemadesuchgreatprogress.wouldn’thavemadehadn’tgotwouldbewet

1).Ifit________lastnight,theground________now.要是昨晚下過雨的話，現(xiàn)在地面就會是濕的。2).You______muchbetternowifyou_______(take)myadvice.假若你當時聽我的話，你現(xiàn)在就會好多了。hadrained

Wouldbehadtaken3.錯綜時間虛擬條件句:即條件從句與主句所指時間不一致，如從句指過去，而主句即指的是現(xiàn)在或?qū)?，此時應(yīng)根據(jù)具體的語境情況對時態(tài)作相應(yīng)的調(diào)整。如：

IftheGod________________________(give)meanotherchance，I_____________(tell)thegirlthreewords:Iloveyou!Ifourlove_________(have