Unit8LetsCommunicate!SectionAGrammarFocus课件人教版八年级英语上册

Unit8Let’sCommunicateSectionA3a-3clearningobjectives1.掌握if引导的条件状语从句的核心规则，包括从句与主句的位置关系和时态规律；理解并掌握“difficulty、line、seriously”等核心词汇及“dropsb.aline、takesth.seriously”等短语的用法。2.能够熟练运用零条件句和第一条件句描述真实情况或未来情景；结合语境使用上述词汇描述交流过程或相关计划。3.能将if条件状语从句的用法迁移到日常生活场景用英语表达逻辑连贯的条件与结果；通过收集英文歌曲中的if从句，分析其用法差异，拓宽语言视野；培养理性思考和逻辑表达能力，在跨场景交流中灵活运用语法知识传递意图。Inthislesson,youwillroleplayastoryaboutresolving

misunderstandinginagroupandfindoutwhichteamisthemostcreative.Production①createaplay.②makeupthedialogue.③roleplaythestory解决v.误会n.lftheheronevercomestoyoulfyouneedsomeoneyou'refeelingbluelfyouwaitforloveandyou'realoneIfyoucallyourfriendsandnobody'shomeButifyouwannacry,cryonmyshoulderlfyouneedsomeonewhocaresforyouIfyou'refeelingsadyourheartgetscolderif条件状语从句Todaywe'regoingtolearnabouttheZero(零条件句)andFirstConditionals(第一条件句).So,what'sthedifferencebetweenthem?Ifyouheatice,itmelts.如果你加热冰，它就会融化。Ifpeopledon'tdrinkwater,theygetthirsty.如果人们不喝水，他们就会口渴。If从句→

用一般现在时主句→

也用一般现在时结论：当表示客观事实、真理时，主句和if引导的条件状语

从句都用__________时，称为______

条件句。一般现在零Ifitrainstomorrow,Iwillstayathome.如果明天下雨，我就会待在家里。Ifyoudon'thurry,youwillmissthebus.如果你不快点，你会错过公交车的。遵循“主将从现”原则If从句→

用一般现在时主句→

用一般将来时结论：当表示未来可能发生的事情时，主句用__________时，if引导的条件状语从句用__________时，称为______

条件句。一般将来一般现在第一Readthesentences.Findmoresentenceswithif-clausesinSectionA.3aIfyouwanttosolvetheproblem,aface-to-facetalkusuallyworksthebest.Textingcanmakethingsworseifyou’renotcarefulwithyourwords.Iftherehearsalendsat7:00p.m.,I’llpickyouupat7:15p.m.Ifyoustaycalmandsaysorry,itwillhelp.IfIgothere,Iwilltryallthedeliciouslocalfood.观察你画出的if从句，它们在句子中的位置一样吗？结论：if从句既可放在主句前，也可放在主句后。放在主句前时，

常用逗号与后面的主句隔开。标出主句和if从句。1.We’llfinishat7:00p.m.ifit’sontime.(句)(句)2.Someofyoumayprefertexting,butittakeslongerandcanmakethingsworse(句)

ifyou’renotcarefulwithyourwords.

(句)3.Ifthetrafficistoobad,you’llhavetowaitforafewminutes.

(句)(句)4.IfIvisitChinathisyear,Iwillgototheparkwithyou.

(句)(句)主从主从从主从主=You’lldobetterinEnglishifyoustudyEnglishhard.Ifyoustudyhard,youwillpasstheexam.=Youwillpasstheexamifyoustudyhard.Ifyoustaycalmandsaysorry,itwillhelp.=Itwillhelpifyoustaycalmandsaysorry.IfyoustudyEnglishhard,you’lldobetterinEnglish.moresentenceswithif-clauses主句和从句时态有什么规律主句描述“结果”if从句描述“条件”一般现在时情态动词一般现在时一般现在时一般现在时Ifyouwanttosolvetheproblem,aface-to-facetalkusuallyworks

thebest.Textingcanmakethingsworseifyou’renotcarefulwithyourwords.Iftherehearsalendsat7:00p.m.,I’llpickyouupat7:15p.m.Ifyoustaycalmandsaysorry,itwillhelp.IfIgothere,Iwilltryallthedeliciouslocalfood.一般现在时一般将来时一般将来时一般将来时一般现在时Grammarfocus主将从现if条件状语从句类型例句从句时态主句时态主将从现Ifyou

stay

calm,it

willhelp.主祈从现Ifyouneedhelp,

call

me.主情从现Ifyoufinishearly,you

cango

home.零条件句Ifyoumixredandblue,yougetpurple.一般现在时一般现在时一般现在时一般现在时will+动原祈使句（动词原形)情态动词（can/may等）一般现在时Summary标出零条件句或第一条件句(具体写“主将从现/主祈从现/主情从现)。Ifyouwanttosolvetheproblem,aface-to-facetalkusuallyworksthebest.(______________)Textingcanmakethingsworseifyou’renotcarefulwithyourwords.(______________)Iftherehearsalendsat7:00p.m.,I’llpickyouupat7:15p.m.(______________)Ifyoustaycalmandsaysorry,itwillhelp.(______________)Takesomewarmclotheswithyouifthetemperaturedropssharply.(______________)零条件句主情从现主将从现主将从现主祈从现Fillintheblanks.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’trainwillplayMatchthetwopartstomakesentences.3b1.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.willyoujoinmefordinner?Fillintheblankswiththecorrectformsoftheverbsinbrackets.Thendiscusswhatthesituationsareandwhomtheinformationisfor.3c...Ifthings____________(go)well,we____________(see)allthoseoldfacesagain.Justthinkhowgreatitwillbe!Ifyouthinkyoucancome,____________(drop)mealineandI____________(give)youallthedetailsaboutthereunion.Butpromisemeyou’llthinkaboutitseriously.Hey,it’sme.Iwantedtotalktoyouaboutthetrainingplanforourteam.Thenewseasoniscoming,soit’stimetomakeaplanforourtraining.Ifwe___________(start)earlierthisyear,Ithinkwe_____________(perform)better.___________(give)meacalland___________(let)meknowifyou___________(think)ofagoodtimeforeveryonetomeet.Talktoyousoon!gowillseedropwillgivedropmealine给我写封短信thinkstartwillperformGivelet...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!startwillperformGiveletthinkateamtrainingplanforthenewseasonTeammatesinthesportsteam.Discusswhatthesituationsareandwhomtheinformationisfor.Workingroups.Createaplayaboutresolvingmisunderstanding(化解误会)amongstudents.Forexample:BeninvitedAnnatogotothebookstoreyesterday,butAnnadidn'tcome.Benfeltreallyangry.Cindyisafriendofthem,tryingherbesttoresolvethemisunderstandingbetweenBenandAnna.①createaplay.Workingroups.Makeupthedialoguebyusingifclauseinyourstory.Forexample:Ben:Anna,whydidn'tyoushowupatthebookstoreyesterday?Anna:I'msosorrybecause...Ben:Ifyoutellmethis,Iwon'tbeangry.Cindy:It'sjustamisunderstanding.Ifyoulistentoeachother'sstory,you'llknow...②makeupthedialogue.③roleplaythestory.Let’svote:Whichteamis