if條件狀語從句課件

RevisionAdverbialClauseofConditionif引導的條件狀語從句-----------復習課1精選ppt課件Ifyouarehappy,whatwillyoudo?

IfIamhappy,Iwillsmile.2精選ppt課件Ifyoubecomesad,whatwillyoudo?IfIbecomesad,Iwillcry.3精選ppt課件Sheisdoingherhomework.Ifyouarehard-working,youwillgetgoodgrades.Shegetsgoodgrades.4精選ppt課件Ifyouplaycomputergamesonweekdays

,you’llbeverytiredinclassyourparentswillbesad.youwon’tgetgoodgrades.youreyeswillbepoor5精選ppt課件Shewillbelate.Ifshe_____toschool,she________late.Sheisgoingtowalktoschool.walkswillbeLead-in6精選ppt課件1)條件狀語從句通常由if或unless(=ifnot)引導，從句中常用一般時代替將來時，即if或unless后的句子謂語用一般現在時。但是，主句則通常用將來時，情態(tài)動詞或祈使句。

時態(tài)－－主將從現主句一般將來時，從句一般現在時7精選ppt課件1.

如果主句是一般將來時，從句則用一般現在時。

Ifitrains（從句），Iwillstayathome.I’llgowithyouifyoudon’twanttogoalone（從句）.2.如果主句含有must,may,can等情態(tài)動詞，從句也要用一般現在時。

Ifyoudrivetoofast,youmayhaveanaccident.Youmuststopifthetrafficisred.3.如果主句是祈使句，從句同樣要用一般現在時。

Don’tgoandplayfootballifyoudon’tfinishyourhomework.

PleasecallmeifhecomesnextSunday.if條件狀語從句結構及時態(tài)Revision8精選ppt課件

If引導條狀語從句時，從句中用一般現在時代替一般將來時。1.Ifhe______(go)tothemovies,hewon’tfinishhiswork.goes2.IfI________(become)adoctor,Icanhelpothers.become3.Ifwe_______(have)time,wewillgototheparktomorrow.have4.如果你去，我也去。Ifyougo,Iwillgo.5.如果明天下雨，請帶雨衣。raincoatPleasetakearaincoatifitrains.excellent9精選ppt課件Ifyouarefreethisweekend,whatwillyoudo?IfIamfree,…sleepwatchTVplaycomputergamespractice10精選ppt課件Ifyouwanttogetgoodmarks,

dowhat?Don’tdowhat?Ifyouwanttogetgoodmarks,__________.Ifyouwanttogetgoodmarks,don’t__________.studyhardlistentoteacherscarefully.dohomeworkbyyourself.

copyyourhomework.talkintheclasscheatintheexams11精選ppt課件Ifyouhaveenoughpocketmoney,whatwillyoubuy?IfIhaveenoughpocketmoney,I____________________.12精選ppt課件IfyouinviteforeignerstoChina,wherewillyougo?Iwillgoto_________,ifIinviteforeignerstoChina.MountTaiWestlakeHainan13精選ppt課件If條件句的替代形式：

（1）祈使句+and/or+陳述句（謂語動詞通常用將來時態(tài)）。其中，and表示句意順承；or表示轉折，意為“否則”。e.g.Ifyouworkhard,you’llpasstheexameasily.=Workhard,andyou’llpasstheexameasily.Ifyoudon’tworkhard,you’llfallbehindothers.=Workhard,oryou’llfallbehindothers.verygood14精選ppt課件（2）用介詞with,without的替代形式：

e.g.Ifthereisnowater,thefishmaydie.

=Fishmaydiewithoutwater.Ifyouhelpme,I’llfinishmytaskontime.

=Withyourhelp,I’llfinishmytaskontime.15精選ppt課件Activity1Rewritethesentenceswithif:Listeninclass,oryouwon’tunderstandwhattodo.Ifyoudon’t

listeninclass,youwon’tunderstandwhattodo.1)Eatbreakfast,oryou’llgethungryatschool.2)Hurryup!We’llbelate!Ifyoudon’teatbreakfast,you’llgethungryatschool.Ifyoudon’thurryup,we’llbelate.16精選ppt課件Activity2.Completethesentences—Iwanttogethighscores.—If__________________________(workhard/dowell)youworkhard,youwilldowell.1.-howcanIremembermyfriends’birthdays?-If_______________________________________(keepanoteinyourdiary/notforget).2.-It’slate,butIdon’twanttogotosleep.-If_______________________________________(notgetenoughsleep/feeltiredatschool).youkeepanoteinyourdiary,youwon’tforget.youdon’tgetenoughsleep,you’llfeeltiredatschool.17精選ppt課件if引導的條件狀語從句和if引導的賓語從句的區(qū)分:If在賓語從句中翻譯為“是否”If在條件狀語從句中翻譯為“如果”I’llgotoseeyouifIamfreenextweek.Iwanttoknowifheisateacher.whether1.if在句中的含義不同18精選ppt課件2.if在從句中的位置不同If引導的賓語從句放在主句之后；而if引導的狀語從句可放在主句之前也可放在主句之后=Ifitdoesn’train,Iwillgoouttomorrow.Iwillgoouttomorrowifitdoesn’train.Idon’tknowifthetrainhasarrived.

If引導的條件狀語從句放于句首時多用逗號隔開；而if引導的賓語從句則不能。19精選ppt課件3.時態(tài)要求上有區(qū)別If引導條件狀語從句的時態(tài)為一般現在時記住“主將從現”

1.Iwanttoknowifthere

asportsmeetingnextmonth.doesn’trainwillbe2.Ifit

doesn’train,we’llgooutIf引導的賓語從句的時態(tài)由主句及本身時態(tài)決定；20精選ppt課件找出下列句子中哪些是if條件狀語從句，哪些是if賓語從句1.Canyoutellmeifshecancometothemeeting?2.Shewillnotgothereifitisrainytomorrow.3.Ican’tguessifshewillbeangry.4.Ifwehelpeachother,wewillgetgoodresults.21精選ppt課件If引導的條件狀語從句的練習1

IfI_______________(notunderstand）,Iwillaskmyteacherforhelp.IfI__________(copy)yourhomework,Iwillcheatmyself.3Ifshe_______________(notget)upearly,she’llmisstheearlybus.4Ifyourmother_______(buy)thebookforyou,itwillbegoodforyourstudy.

don’tunderstand

copy

doesn’tget

buys22精選ppt課件5.Ifyou____________(notwork)hard,you_________(notpass)theexam.6.Ifyourbrother____________(break)thewindow,hewillfeelverysorryforthat.7.Ifthecomputer

(notwork),menditplease.don’tworkwon’tpassbreaksdoesn’twork23精選ppt課件8.Ifshe_______(notbe)interestedinmath,shewillfinditveryboring.9.Ifyou_________(get)highscores,yourparentswillbeproudofyou.10.Ifyou_________(be)happy,wewillbehappy.isn’tgetare

24精選ppt課件.Iwanttoknowifhe_______(come)tomorrow,ifhe_______(come),I__________(give)themessagetohim.

comeswillcomewillgive25精選ppt課件summaryif的用法2.引導條件狀語從句：譯為“如果，假如”(1)if從句+祈使句(2)if從句+主句（一般將來時）(3)if從句+主句（含有情態(tài)動詞）

1.引導賓語從句：譯為“是否”，表示不確定的概念。Idon’tknowifyourfathercancometogether.Canyoutellmeifmissyourparents?26精選ppt課件1.Ifyou_____totheparty,you’llhaveagreattime.A.willgo

B.went

C.go

D.going2．I____hertheanswerifshe____me.A.cantell,willask

B.willtell,willask

C.wouldtell,ask

D.willtell,asksCD3.–Whatareyougoingtodotomorrow?

--We’llgotothelibrarytomorrowifit___.A.isn’train

B.rain

C.won’train

D.doesn’train4.Whatwillyoudoifyou_____totheoldfolk’shomevisit?A.go

B.went

C.going

D.willgoAD27精選ppt課件5.IfIeat____food,I’llbeveryfat.A.toomanyB.manytoo

C.toomuch

D.muchtoo6.I’llgivethebooktohimifhe___herenextSunday.A.willcome

B.comes

C.iscoming

D.came

7.There____anEnglishfilminourschooltomorrow.A.isgoingtohave

B.willhave

C.isgoingtobe

D.has8.Couldyoutelluswhere____？A.willthenextOlympicGamesheld

B.thenextOlympicGameswillbeheldC.wouldthenextOlympicGamesbeheldD.thenextOlympicGameswouldbeheldCCBB28精選ppt課件If引導的非真實性條件狀語從句（虛擬語氣）

(A)與現實事實相反

主：過去將來時

從：過去時

If

they

were

here