Unit8Let’sCommunicate!人教版八年級(jí)上冊

SectionA

Grammarfocus

Whatmakesgoodcommunication??BIGQuestionLearningobjectives掌握if引導(dǎo)的條件狀語從句的核心規(guī)則，包括從句與主句的位置關(guān)系和時(shí)態(tài)規(guī)律；能區(qū)分if引導(dǎo)的條件狀語從句與賓語從句的含義、位置及時(shí)態(tài)差異；能獨(dú)立完成從句時(shí)態(tài)填空、句子匹配、句型轉(zhuǎn)換等練習(xí)，準(zhǔn)確運(yùn)用“主將從現(xiàn)”等規(guī)則；能根據(jù)“校園生活”“聚會(huì)邀請”“團(tuán)隊(duì)訓(xùn)練計(jì)劃”等場景，仿寫或創(chuàng)編包含if條件狀語從句的句子及簡短語篇；能準(zhǔn)確判斷句子中if從句的類型，清晰闡述判斷依據(jù)，提升語法應(yīng)用的精準(zhǔn)度。能夠根據(jù)文本形態(tài)及內(nèi)容推斷出與之相關(guān)的交流方式與交際情境，并在語境中正確運(yùn)用條件句描述未來可能發(fā)生的事情。WatchthevideoJourneytotheWestandfindoutifsentences.Ifyoucanjumpfrommypalm,you’llwinand

I’llinviteJudeEmperorwest.Ifyoufail,youwillhavetoleaveheavenandnevereverreturn.Conditionalsentences條件狀語從句條件狀語從句表示在……條件下某事才能發(fā)生，從句是主句動(dòng)作發(fā)生的前提或條件，通常由連詞if引導(dǎo)，意為“如果”。

oversleep

missthebusbelateforschoolget

angryReadthesentences.Findmoresentenceswithif-clausesinSectionA.3alfyouwanttosolvetheproblem,aface-to-facetalkusuallyworksthebest.Textingcanmakethingsworseifyou'renotcarefulwithyourwords.Iftherehearsalendsat7:00p.m.,I'llpickyouupat7:15p.m.Ifyoustaycalmandsaysorry,itwillhelp.IfIgothere,Iwilltryallthedeliciouslocalfood.GrammarFocus由if引導(dǎo)的條件狀語從句和主句構(gòu)成。if可放于句首也可放于句中。位于句首時(shí)，一般要用逗號(hào)與主句隔開；位于句中時(shí)，其前不必用逗號(hào)。Ifyouwanttosolvetheproblem,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(shí)態(tài)有什么規(guī)律主將從現(xiàn)一般現(xiàn)在時(shí)情態(tài)動(dòng)詞描述“條件”描述“結(jié)果”一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)一般將來時(shí)一般將來時(shí)一般將來時(shí)一般現(xiàn)在時(shí)GrammarfocusIfyouwanttosolvetheproblem,aface-to-facetalkusuallyworksthebest.Textingcanmakethingsworseifyou’renotcarefulwithyourwords.Iftherehearsalendsat7:00p.m.,I’llpickyouupat7:15p.m.Ifyoustaycalmandsaysorry,itwillhelp.IfIgothere,Iwilltryallthedeliciouslocalfood.zeroconditionalsentence零條件句firstconditionalsentence第一條件句用法If引導(dǎo)的條件狀語從句包含零條件句和第一條件句。一般表示普遍存在的事實(shí)、真理或習(xí)慣行為。條件成立時(shí)，結(jié)果必然出現(xiàn)，不存在任何不確定性。零條件句：第一條件句：用于表示在特定條件下可能會(huì)發(fā)生的情況。結(jié)果的實(shí)現(xiàn)是有條件的，且這個(gè)條件有實(shí)現(xiàn)的可能性。Zeroconditionals零條件句描述客觀事實(shí)、自然規(guī)律、普遍真理或習(xí)慣性行為。條件成立時(shí)，結(jié)果必然發(fā)生。If+一般現(xiàn)在時(shí)，主句+一般現(xiàn)在時(shí)。e.g.Ifyouheatwaterto100°C,itboils.

如果你把水加熱到100°C，它就會(huì)沸騰。

Ifthesunsets,itgetsdark.

如果太陽落山，天就會(huì)變黑。結(jié)構(gòu)：客觀事實(shí)自然規(guī)律時(shí)態(tài)時(shí)態(tài)If

you

like

sightseeing,you

willlove

it!Ifyouwalk

alongtheroad,youwillseemanyoldbuildings.主句用一般將來時(shí)，從句用一般現(xiàn)在時(shí)，即“主將從現(xiàn)”。

表示在特定條件下可能會(huì)發(fā)生的情況、結(jié)果或行為。表達(dá)將來可能發(fā)生的條件和結(jié)果，結(jié)果發(fā)生的可能性較高。Firstconditionals第一條件句If+一般現(xiàn)在時(shí)，主句+一般將來時(shí)。時(shí)態(tài)YoucanalsoseefamousbuildingsarounditifyouvisitPeople'sSquare.Youshouldstudyhardifyouwanttomakeyourdreamcometrue.主句用一般將來時(shí)，從句用情態(tài)動(dòng)詞，即“主情從現(xiàn)”。If+一般現(xiàn)在時(shí)，主句

+情態(tài)動(dòng)詞may,might,can,must,should等的句子。時(shí)態(tài)Havearestifyoufeeltired.Pleaseletmeknowifshecomesback.主句用一般將來時(shí)，從句用祈使句，即“主祈從現(xiàn)”。If+一般現(xiàn)在時(shí)，主句

+祈使句。歸納條件狀語從句用法talkaboutpossibleactionsandtheresultsoftheseactions位置主句在前，從句在后，中間沒有逗號(hào)。從句在前，主句在后，中間有逗號(hào)。時(shí)態(tài)主將從現(xiàn)主情從現(xiàn)主祈從現(xiàn)主現(xiàn)從現(xiàn)Zeroconditionals零條件句Firstconditionals第一條件句1.借助“祈使句+and/or+句子（一般將來時(shí)）”句型來轉(zhuǎn)換。and在句意上表示順承，意為“那么，就”；or表示轉(zhuǎn)折，意為“否則”。e.g.Ifyougetupearly,you’llcatchtheschoolbus.

=Getupearly,andyou’llcatchtheschoolbus.

=Getupearly,oryouwon’tcatchtheschoolbus.

早點(diǎn)起床，你就會(huì)趕上校車。借助without或with來轉(zhuǎn)換條件狀語從句。e.g.Ifthereisnosunshine,plantswilldie.

=Plantswilldiewithoutsunshine.

如果沒有陽光，植物將會(huì)死亡。

If

youhelpme,I’llgetbettergrades.

=Withyourhelp,I’llgetbettergrades.

如果你幫助我，我將取得更好的成績。Matchthetwopartstomakesentences.1.Ifwehaveaface-to-face

meeting,2.IfIhavegoodnews,3.Ifyouneedtoleave,4.Ifyoucanfinishyourworkearly

today,5.Iftheoldmanhasdifficultiesin

hearing,6.Ifyoucan’treachherbyphone,A.trytexting.B.we’llunderstandeach

otherbetter.C.youcanwritethingsdown

forhim.D.I’llcallyourightaway.E.I’llcallataxiforyou.F.willyoujoinmefordinner?difficultyn.困難；難題havedifficulty(in)doingsth.做某事有困難(介詞in可以省略)Iftheoldmanhasdifficultiesinhearing,youcanwritethingsdownforhim.如果這位老人聽力有困難，你可以把事情寫下來給他看。當(dāng)表示做一件事的困難程度時(shí)，常作不可數(shù)名詞，其前可用some，no等詞修飾當(dāng)表示具體的困難、難處、難點(diǎn)時(shí)，作可數(shù)名詞。e.g.IhavegreatdifficultywithEnglishgrammar.我在英語語法方面有很大困難。Jackhasagoodmemory.Hehasnodifficulty(in)remembering

thesewords.Jack記憶力很好，他記這些單詞毫不費(fèi)力。Davidcanalwaysfaceallkindsofdifficulties.David總是能夠勇敢地面對各種困難。Scanthepassagesandanswerthequestions.Whatkindoftextsarethey?notevoicemessages...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)meknowifyou___________(think)ofagoodtimeforeveryonetomeet.Talktoyousoon!startwillperformGiveletthinkateamtrainingplanforthenewseasononeoftheteammates

Discusswhatthesituationsareandwhomtheinformationisfor.Fillintheblankswiththecorrectformsoftheverbsinbrackets.Thendiscusswhatthesituationsareandwhomtheinformationisfor.…Ifthings_____(go)well,we_________(see)allthoseoldfacesagain.Justthinkhowgreatitwillbe!Ifyouthinkyoucancome,________(drop)mealineandI___________(give)youallthedetailsaboutthereunion.Butpromisemeyou'llthinkaboutitseriously.gowillseedropwill