Unit+10+Section+A+Grammar+Focus-3c 人教版八年級英語上冊

Unit10Ifyougotoparty,you’llhaveagreattime!GrammarFocus-3cLet’senjoyasongandfindouttheif-clauses!WarmupIf引導的條件狀語從句ConditionalsentencesReviewIfyougotothepartywithKarenandAnna,you_________(have)agreattime.Ifyou________(wear)jeanstotheparty,theteachers__________(notlet)youin.wearwon’tletwillhaveIfyou_____(take)thebustotheparty,you________(be)late.Ifyou________(notgo)totheparty,you________(be)sorry.takewillbedon’tgowillbeLookandsaySentencepatterntransformation.Heisgoingtowalktoschool.Hewillbelate.Wecansay:Ifhe_______toschool,he_________late.walkswillbeWecanalsosay:He_________lateifhe_______toschool.walksTips:if在主句前，用逗號隔開。if在主句后，則不用逗號。willbe從句主句LookandsaySentencepatterntransformation.Itisgoingtoraintomorrow.Iwillstayathome.

Ifit_____tomorrow,I__________athome.

rainswillstayWecansay:Wecanalsosay:I__________athomeifit_____tomorrow.rainswillstay從句主句PracticeIfit____

sunnytomorrow,they___________atrip.Itwillbesunnytomorrow.Theywillhaveatriptomorrow.iswillhaveIfhe_______studyhard,he_________theexam.doesn’twillfailHewillfailtheexam.Hewon’tstudyhard.PresentationGrammarFocusWhile-GrammarReadthesentencesandtranslatethem.IthinkI’lltakethebustotheparty.Ifyoudo,you’llbelate.IthinkI’llstayathome.Ifyoudo,you’llbesorry.Whatwillhappeniftheyhavethepartytoday?Iftheyhaveittoday,halftheclasswon’tcome.Shouldweaskpeopletobringfood?Ifweaskpeopletobringfood,they’lljustbringpotatochipsandchocolate.PresentationPracticeWhile-GrammarFillintheblanksaccordingtogrammarfocus.1.我想我將會乘公共汽車去參加聚會。I_____I’lltakethebustothe______.2.如果你那樣做，你將會遲到。Ifyou_____,_____belate.3.我想我將待在家里。I__________stayathome.4.如果你那樣做，你將會覺得很抱歉。Ifyou____,__________sorry.5.如果他們今天聚會，將會發(fā)生什么事？_______________ifthey_____thepartytoday?6.如果他們今天聚會，班里一半的學生將不會去。Ifthey______thepartytoday,______theclass_______come.7.我們應當要求人們帶食物來嗎？

Shouldwe______peopleto______food?8.如果我們要求人們帶食物來時，他們將會只帶薯條和巧克力。______we______peopletobringfood,________just______potatochipsandchocolate.

doyou’llthinkpartythinkI’lldoyou’llbeWhatwillhappenhavehavehalfwon’taskbringthey’llbringIfaskGrammarFocusIthinkI'lltakethebustotheparty.Ifyoudo,you'llbelate.IthinkI'llstayathome.Ifyoudo,you'llbesorry.Whatwillhappeniftheyhavethepartytoday？Iftheyhaveittoday,halftheclasswon'tcome.Shouldweaskpeopletobringfood？Ifweaskpeopletobringfood,they'lljustbringpotatochipsandchocolate.Ifyoutakethebustotheparty,you’llbelate.Ifyoustayathome,you’llbesorry.為避免重復,條件狀語從句常用助動詞do(does/did)來替代上文提到的動作。GrammarFocusGrammarfocusReadthefollowingsentencesandfindsentencesincluding“If…will…”.IthinkI’lltakethebustotheparty.Ifyoudo,you’llbelate.IthinkI’llstayathome.Ifyoudo,you’llbesorry.Whatwillhappeniftheyhavethepartytoday?Iftheyhaveittoday,halftheclasswon’tcome.Shouldweaskpeopletobringfood?Ifweaskpeopletobringfood,they’lljustbringpotatochipsandchocolate.Predicttheconsequences.Whatarethesesentences’function?if引導的條件狀語從句

If是連詞，表示假設或條件，意為____________________，表示將會發(fā)生和可能發(fā)生的事，或進行提醒警告。引導條件狀語從句，既可放在主句_____，也可放在主句_____。若if條件句放在句首，從句后面要加______與主句隔開。

“如果；假如；倘若”前面后面逗號如：如果你去那兒，我也會去。______________,I’llgo,too.我媽媽如果有空，就會帶我去公園Mymotherwilltakemetothepark____________.IfyougothereifsheisfreeIf條件狀語從句的復合句中主從句的時態(tài)if引導的條件狀語從句要遵循“主將從現(xiàn)”的規(guī)則。即if引導的條件狀語從句，主句用一般將來時(用will形式，不能用begoingto形式)，從句用一般現(xiàn)在時。?主句是一般將來時，從句用一般現(xiàn)在時。如：IfIgototheparty,I’llhaveagreattime.I’llhaveagreattimeifIgototheparty.從句主句一般現(xiàn)在時一般將來時從句主句一般現(xiàn)在時一般將來時句子結構：If+從句,主句.=主句+if+從句.主將從現(xiàn)如：Ifyoueatbadfood,youmayfallill.?

主句謂語含有情態(tài)動詞may/might/can/must/should等，從句用一般現(xiàn)在時。從句主句一般現(xiàn)在時含情態(tài)動詞mayIfthetrafficlightsarered,youmuststopandwait.從句主句一般現(xiàn)在時含情態(tài)動詞mustYoucanpasstheexamifyouworkhard.從句主句一般現(xiàn)在時含情態(tài)動詞can主情從現(xiàn)?如果主句是祈使句，那么從句通常要用一般現(xiàn)在時。(即主祈從現(xiàn))如：Ifthelightis

red,waitforaminute.從句主句一般現(xiàn)在時祈使句Ifyouwanttohaveachat,callmeup.Don’twaitformeifIamlate.從句主句一般現(xiàn)在時祈使句從句主句一般現(xiàn)在時祈使句主祈從現(xiàn)有些句子可與含if的條件狀語從句互相轉換。?有if引導的條件狀語從句的復合句中，當主句和從句的主語均為you時，可轉換為“祈使句，and+簡單句”或“祈使句，or(否則)+簡單句”如：Ifyoustudyhard,

you’llpasstheexameasily._____________,_____you’llpasstheexameasily.StudyhardIfyoudon’thurryup,

youwillbelateagain.__________,_____youwillbelateagain.HurryuporandYouwillbehealthier

ifyoueatwell._________,_____youwillbehealthier.Eatwelland?

借助介詞with或without來轉換。如：Youcan’tdrivethecarifthedoorisopen.Youcan’tdrivethecar__________________.withthedooropenIfthereisnowater,fishwilldie.Fishwilldie_____________.withoutwaterWithyourhelp,I’llfinishmyjobsoon._____________,I’llfinishmyjobsoon.IfyouhelpmeGrammarFocusif條件狀語從句用法表示主句動作發(fā)生所需要的條件。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)注意在條件狀語從句中，if的含義為“如果”，時態(tài)是主將/情/祈從現(xiàn)。當if的含義為“是否”時，時態(tài)要根據(jù)實際情況選擇。主祈從現(xiàn)3aFillintheblankswiththecorrectformsoftheverbsinbrackets.upsetadj.難過；失望；沮喪beupsetwithsb生某人的氣/對某人感到不快taxin.出租汽車；的士advicen.勸告；建議Languagepoints1.Canyougivemesomeadvice

please?（教材P753a）(1)advice與suggestion兩者都可表示“建議”，其區(qū)別如下：advice不可數(shù)名詞。表示“一條建議”用apieceofadvice。Iaskedmyteacherforsomeadvice/apieceofadvice.suggestion可數(shù)名詞，復數(shù)形式為suggestions。Iaskedmyteacherforsomesuggestions/asuggestion.(2)與advice相關的一些詞組：givesb.someadvice給某人一些建議asksb.foradvice征求某人的意見take/followsb.’sadvice聽從某人的意見Post-GrammarFillintheblankswiththecorrectformsoftheverbsinbrackets.3aPracticeknowdothinkgowillbetellshavewearwilllookgowalkwilltaketakewillbeknow;do句意“我不知道明晚參加邁克的生日聚會的事怎么做？”don’t后跟動詞原形；whatto+動詞形式，復合不定式結構。2.think本句表達一客觀事實，主語parents是復數(shù)形式，故用一般現(xiàn)在時態(tài)。句意“我父母認為我應當為下周的英語考試而學習”

。3.go;willbe本句是含if條件狀語從句的主從復合句；應遵循主將從現(xiàn)原則。句意“如果我去參加聚會，他們會很失望。”4.tells;have

本句為but連接的并列句，后半句為一般現(xiàn)在時，故前半句也應是一般現(xiàn)在時，主語Mike是第三人稱單數(shù)形式，故填tells；don’t后跟動詞原形。5.wear;willlook

本句為含if條件狀語從句的主從復合句，應循主將從現(xiàn)原則。句意“如果我穿牛仔，我看起來會很糟糕。”7.walk;willtake

本句為含if條件狀語從句的主從復合句，應循主將從現(xiàn)原則。句意“如果我步行去，將會花費我很多時間?！眛ake;willbe本句為含if條件狀語從句的主從復合句，應循主將從現(xiàn)原則。

句意“如果我乘出租車去，又將會很貴?！?。PresentationPost-GrammarPractice3aReadcarefullyandfindtheanswerstothefollowingquestions:1.WherewillTinago?2.Whenistheparty?3.WhatdoesMiketellthemtodo?4.WhatwillhappenifTinawearsjeans?5.DoesTinaknowhowtogototheparty?Mike’sbirthdayparty.Tomorrownight.Hetellsthemtowearniceclothes.Ifshewearsthejeans,shewilllooktheworst.No,shedoesn’t.3bCompletethesentencesusingyourownideas.1.IfIgetuplatetomorrow,_______________________________________2.IfIdon’tfinishmyhomework,__________________________________3.IfIdon’tgetenoughexercise,___________________________________4.Iwillnothaveenoughtimetostudyif_____________________________5.Iwillno