Unit8Let’sCommunicate!SectionAGrammarfocusLearningobjectives掌握if引導的條件狀語從句的核心規(guī)則，包括從句與主句的位置關系和時態(tài)規(guī)律；能區(qū)分if引導的條件狀語從句與賓語從句的含義、位置及時態(tài)差異；能獨立完成從句時態(tài)填空、句子匹配、句型轉換等練習，準確運用“主將從現(xiàn)”等規(guī)則；能根據(jù)“校園生活”“聚會邀請”“團隊訓練計劃”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)，提升語法應用的精準度。能夠根據(jù)文本形態(tài)及內(nèi)容推斷出與之相關的交流方式與交際情境，并在語境中正確運用條件句描述未來可能發(fā)生的事情。Warming-up

Let’senjoyasong.Ifyou'rehappyandyouknowitclapyourhandsIfyou'rehappyandyouknowitclapyourhandsIfyou'rehappyandyouknowitandyoureallywanttoshowitIfyou'rehappyandyouknowitclapyourhandsIfyou'rehappyandyouknowitstampyourfeetIfyou'rehappyandyouknowitstampyourfeetIfyou'rehappyandyouknowitandyoureallywanttoshowitIfyou'rehappyandyouknowitstampyourfeetIfyou'rehappyandyouknowitshout“Hurray”Ifyou'rehappyandyouknowitshout“Hurray”Ifyou'rehappyandyouknowitandyoureallywanttoshowitIfyou'rehappyandyouknowitshout“Hurray”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，從句是主句動作發(fā)生的前提或條件，通常由連詞if引導，意為“如果”。Readthesentence.Ifyouwanttosolvetheproblem,aface-to-facetalkusuallyworksthebest.Textingcanmakethingsworseifyou’renotcarefulwithyourwords.Iftherehearsalendsat7:00p.m.,I’llpickyouupat7:15p.m.Ifyoustaycalmandsaysorry,itwillhelp.IfIgothere,Iwilltryallthedeliciouslocalfood.if引導的條件狀語從句if引導的是從句從句在前，從句后要有逗號主句在后從句在后，主句在前，中間沒有逗號位置用法If引導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、真理或習慣行為。條件成立時，結果必然出現(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發(fā)生的情況。結果的實現(xiàn)是有條件的，且這個條件有實現(xiàn)的可能性。Zeroconditionals零條件句描述客觀事實、自然規(guī)律、普遍真理或習慣性行為。條件成立時，結果必然發(fā)生。If+一般現(xiàn)在時，主句+一般現(xiàn)在時。e.g.Ifyouheatwaterto100°C,itboils.

如果你把水加熱到100°C，它就會沸騰。

Ifthesunsets,itgetsdark.

如果太陽落山，天就會變黑。結構：客觀事實自然規(guī)律時態(tài)時態(tài)If

you

like

sightseeing,you

willlove

it!Ifyouwalk

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

表示在特定條件下可能會發(fā)生的情況、結果或行為。表達將來可能發(fā)生的條件和結果，結果發(fā)生的可能性較高。Firstconditionals第一條件句If+一般現(xiàn)在時，主句+一般將來時。時態(tài)YoucanalsoseefamousbuildingsarounditifyouvisitPeople'sSquare.Youshouldstudyhardifyouwanttomakeyourdreamcometrue.主句用一般將來時，從句用情態(tài)動詞，即“主情從現(xiàn)”。If+一般現(xiàn)在時，主句+情態(tài)動詞may,might,can,must,should等的句子。時態(tài)Havearestifyoufeeltired.Pleaseletmeknowifshecomesback.主句用一般將來時，從句用祈使句，即“主祈從現(xiàn)”。If+一般現(xiàn)在時，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。從句在前，主句在后，中間有逗號。時態(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）”句型來轉換。and在句意上表示順承，意為“那么，就”；or表示轉折，意為“否則”。e.g.Ifyougetupearly,you’llcatchtheschoolbus.=Getupearly,andyou’llcatchtheschoolbus.=Getupearly,oryouwon’tcatchtheschoolbus.

早點起床，你就會趕上校車。借助without或with來轉換條件狀語從句。e.g.Ifthereisnosunshine,plantswilldie.=Plantswilldiewithoutsunshine.

如果沒有陽光，植物將會死亡。

Ifyouhelpme,I’llgetbettergrades.=Withyourhelp,I’llgetbettergrades.

如果你幫助我，我將取得更好的成績。Ifyouwanttosolvetheproblem,aface-to-facetalkusuallyworksthebest.Textingcanmakethingsworseifyou’renotcarefulwithyourwords.Iftherehearsalendsat7:00p.m.,I’llpickyouupat7:15p.m.Ifyoustaycalmandsaysorry,itwillhelp.IfIgothere,Iwilltryallthedeliciouslocalfood.Whatarethetensesofthemainclause(主句)andthesubordinateclause(從句)?一般現(xiàn)在時一般現(xiàn)在時一般現(xiàn)在時含情態(tài)動詞的一般現(xiàn)在時一般現(xiàn)在時一般將來時一般現(xiàn)在時一般將來時一般現(xiàn)在時一般將來時Ifyouwanttosolvetheproblem,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Findmoresentenceswith

if-clausesinSectionA."Ifyoucan'tmeet,justcallyourfriend.""Ifitisstillhardtotalk,takeabreak.""Ifyoucancome,I'llbeveryhappy.""Ifyouwanttomakesomenewfriends,thisisagoodchance.""Ifyoutalkto...,Ithinkhe/shewillbehappytohelpyou."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。當表示做一件事的困難程度時，常作不可數(shù)名詞，其前可用some，no等詞修飾當表示具體的困難、難處、難點時，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力。Davidcanalwaysfaceallkindsofdifficulties.David總是能夠勇敢地面對各種困難。Scanthepassagesandanswerthequestions.Whatkindoftextsarethey?Whatformsofcommunicationaretheyconnectedwith?notevoicemessagesFillintheblankswiththecorrectformsoftheverbsinbrackets.Thendiscusswhatthesituationsareandwhomtheinformationisfor....Ifthings________(go)well,we________(see)allthoseoldfacesagain.Justthinkhowgreatitwillbe!Ifyouthinkyoucancome,________(drop)mealineandI________(give)youallthedetailsaboutthereunion.Butpromisemeyou’llthinkaboutitseriously.gowillweedropwillgivesituationwhomSomeonethespeakerwantstoinvitetoareunion.It'saboutareunion.Thespeakerisinvitingsomeone.Hey,it’sme.Iwantedtotalktoyouaboutthetrainingplanforourteam.Thenewseasoniscoming,soit’stimetomakeaplanfo