Unit8SectionAGrammarFocusWatchthevideoJourneytotheWestandfindoutifsentences.CanyousaymoreIf

sentence?IfIoversleep…Iwillmissthebus.IfImissthebus,Iwillbelateforschool.IfIamlateforschool,myteacherwillgetangry.IfIgotoLondon…IwillseetheBigBen.IfIgotoBuckinghamPalace,IcantakeaphotooftheRoyalGuard.IfyougotoLondon,youmust

look

rightbeforecrossingastreetReadthesentences.Findmoresentenceswithif-clausesinSectionA.Ifyouwanttosolvetheproblem,aface-to-facetalkusuallyworksthebest.Textingcanmakethingsworseifyou’renotcarefulwithyourwords.Iftherehearsalendsat7:00p.m.,I’llpickyouupat7:15p.m.Ifyoustaycalmandsaysorry,itwillhelp.IfIgothere,Iwilltryallthedeliciouslocalfood.3a觀察你畫出的if從句，它們在句子中的位置一樣嗎？一類是if從句在句首的（此時從句后加逗號）一類是if從句在句末的（此時從句前可不加逗號）Ifyoustudyhard,youwillpasstheexam.=Youwillpasstheexamifyoustudyhard.Ifyoustaycalmandsaysorry,itwillhelp.=Itwillhelpifyoustaycalmandsaysorry.IfyoustudyEnglishhard,you’lldobetterinEnglish.=You’lldobetterinEnglishifyoustudyEnglishhard.ExerciseIfyouwanttosolvetheproblem,aface-to-facetalkusuallyworksthebest.Textingcanmakethingsworseifyou’renotcarefulwithyourwords.Iftherehearsalendsat7:00p.m.,I’llpickyouupat7:15p.m.Ifyoustaycalmandsaysorry,itwillhelp.IfIgothere,Iwilltryallthedeliciouslocalfood.if從句主句主句和從句時態(tài)有什么規(guī)律主將從現(xiàn)一般現(xiàn)在時情態(tài)動詞描述“條件”描述“結(jié)果”一般現(xiàn)在時一般現(xiàn)在時一般現(xiàn)在時一般現(xiàn)在時一般將來時一般將來時一般將來時一般現(xiàn)在時Grammarfocus特殊情況：主句表達客觀事實、習慣性結(jié)論類型例句從句時態(tài)主句時態(tài)基礎結(jié)構Ifyou

stay

calm,it

willhelp.特殊情況1Ifyouneedhelp,

call

me.特殊情況2Ifyoufinishearly,you

cango

home.特殊情況3（客觀結(jié)論）Ifyoumixredandblue,yougetpurple.一般現(xiàn)在時一般現(xiàn)在時一般現(xiàn)在時will+動原祈使句（動詞原形)情態(tài)動詞（can/may等）if條件狀語從句一般現(xiàn)在時一般現(xiàn)在時1.Ifyouexercisemore,you

(be)muchhealthier.2.Ifit

(rain)tomorrow,they

(notplay)soccerafterschool.3.Youshouldseeadentistifyou

(have)atoothache.4.lfhe

(walk)toschool,it

(take)himtoomuchtime.5.lfyou

(notgo)tobedearlier,you

(feel)tiredinthemorning.6.lfit

(notrain),he

(play)basketballwithmetomorrow.Exercisewillberainswon'tplayhavewalkswilltakedon'tgowillfeeldoesn’trainwillplayFillintheblanks.Ifitrains,wewillcancelthepicnic.Youcanjoinusifyoufinishyourhomework.Iwonderifhewillcometotheparty.Couldyoutellmeiftheshopisopentoday?if賓語從句（表是否）if條件狀語從句（表如果）這兩組句子里的if，含義一樣嗎從句的位置，主句時態(tài)有什么不同？if引導的賓語從句if引導的條件狀語從句例句含義位置時態(tài)是否如果主句現(xiàn)在，從句隨便主句過去，從句隨變“主將從現(xiàn)”Iwonderifitwillraintomorrow.Iwonderedifhewasfree.Ifitrains,Iwillstayathome.Iwillstayathomeifitrains.易混淆點對比（if賓語從句vsif條件狀語從句）句首（加逗號）/句末主句后（不加逗號）Ifyoudon’tunderstand,youcanasktheteacher.（

）Sheaskedifyoucouldhelpherwiththeproject.（

）Ifitisfinetomorrow,wewillhaveapicnic.（

）Doyouknowifthereisalibrarynearhere?（

）Youwillmakeprogressifyoukeeppracticing.（

）請判斷下列句子中if引導的是條件狀語從句還是賓語從句，將答案填在括號內(nèi)。條件狀語從句條件狀語從句條件狀語從句賓語從句賓語從句Matchthetwopartstomakesentences.1.Ifwecanhaveaface-to-facemeeting，A.trytexting.2.IfIhavegoodnews，B.we′llunderstandeachotherbetter.3.Ifyouneedtoleave，C.youcanwritethingsdownforhim.4.Ifyoucanfinishyourworkearlytoday，D.I′llcallyourightaway.5.Iftheoldmanhasdifficultiesinhearing，E.I′llcallataxiforyou.6.Ifyoucan′treachherbyphone，F(xiàn).willyoujoinmefordinner?3b...Ifthings____________(go)well,we____________(see)allthoseoldfacesagain.Justthinkhowgreatitwillbe!Ifyouthinkyoucancome,____________(drop)mealineandI____________(give)youallthedetailsaboutthereunion.Butpromisemeyou’llthinkaboutitseriously.Fillintheblankswiththecorrectformsoftheverbsinbrackets.Thendiscusswhatthesituationsareandwhomtheinformationisfor.gowillseedropwillgive3cHey,it’sme.Iwantedtotalktoyouaboutthetrainingplanforourteam.Thenewseasoniscoming,soit’stimetomakeaplanforourtraining.Ifwe___________(start)earlierthisyear,Ithinkwe_____________(perform)better.___________(give)meacalland___________(let)meknowifyou___________(think)ofagoodtimeforeveryonetomeet.Talktoyousoon!startwillperformGiveletthinkdropmealine給我寫封短信...Ifthings____________(go)well,we____________(see)allthoseoldfacesagain.Justthinkhowgreatitwillbe!Ifyouthinkyoucancome,____________(drop)mealineandI____________(give)youallthedetailsaboutthereunion.Butpromisemeyou’llthinkaboutitseriously.gowillseedropwillgiveAninvitationtoa

reunionparty.Oldfriendswhohaven'tseeneachotherforalongtime.Discusswhatthesituationsareandwhomtheinformationisfor.Hey,it’sme.Iwantedtotalktoyouaboutthetrainingplanforourteam.Thenewseasoniscoming,soit’stimetomakeaplanforourtraining.Ifwe___________(start)earlierthisyear,Ithinkwe_____________(perform)better.___________(give)meacalland___________(let)meknowif