Grammar-(2)VIP专享VIP免费

Unit6TVprogrammesGrammarTolearntouseifandunlessObjectivesAUsingifWeuseiftotalkabouttheresultofapossibleaction.Wemakesentenceswithiflikethis：If-clause(simplepresenttense)Mainclause(will/may/might/...+infinitive)Ifyouareafootballfan,youwillnotwanttomissthisweek'sprogramme.Ifyouareananimal-lover,youmayfeelsadaboutit.Ifyouenjoysolvingmysteries,youmightlikethisfilm.Weputacommaaftertheif-clausewhenitisthefirstpartofasentence.if引导的条件状语从句由引导词if或unless引导的状语从句叫做条件状语从句。状语从句中的动作实现后，主句中的动作才能发生if引导的条件状语从句可以位于主句之前，也可位子主句之后。如果从句在前，从句与主句之间要用逗兮隔开。•Ifyoufailintheexam,youwilllethimdown.如果你考试不及格，你会让他失望的。•Youwillgetgoodgradesifyoustudyhard.如果你努力学习，就会取得好成绩。在if引导的条件状语从句中，主句中的动词常用一般将来时，从句中的动词用一般现在时，即“主将从现”原则。•Ifyouaskhim,hewillhelpyou.如果你请他（帮忙），他会帮你的。•TheyaregoingtohaveapicniciftheyarefreenextSaturday.如果下周六有空，他们就去野餐。在if引导的条件状语从句中，主句也可含有情态动词或是祈使句。•Ifitisfinetomorrow,wecangoandflythekite.如果明天天气好，我们可以去放风筝。•Don'tmisstheprogrammeifyoulikemusic.如果你喜欢音乐，不要错过这个节目。注意:在if引导的条件状语从句中，无论主句用一般将来时、情态动词还是祈使句,从句均用一般现在时。◆变换：含有if引导的条件状语从句的复合句中，当主句主语和从句主语均为you时，可转换为“祈使句，and+简单句”或“祈使句，or+简单句”。•Youcangetgoodgradesifyouworkhard.=Workhard,andyouwillgetgoodgrades•Ifyoudon’tgetupearly,youwillbelateagain.=Getupearly,oryouwillbelateagain.Whatwillhappenif…?A1Millieisthinkingaboutherself,herfriendsandTVprogrammes.Helpherchoosethecorrectformsoftheverbsinbracketstocompletethesentences.1.IfI(go,willgo)totheReadingClubthisafternoon,I(donothave,maynothave)anytimetowatchTV.2.IfSimon(gets,willget)hometoolate,he(misses,willmiss)hisfavouritecartoon.3.IfAmy(completes,willcomplete)allherhomeworkquickly,she(watches,willwatch)thechatshow.4.IfDaniel(takes,willtake)partinthegameshow,he(wins,mightwin)aprize.5.IfSandy(finds,willfind)aprogrammeinteresting,she(introduces,willintroduce)ittous.Weoftenusethesimple______(future,present)tenseintheif-clause.Weneeda________(comma,fullstop)aftertheif-clausewhenitisthefirstpartofasentence.presentcommaAskingaboutanimalsA2Milliewatchedadocumentaryaboutanimals.HelpMillieanswerherfather'squestionswiththehelpofthewordsinthebox.isindangerDad:Whatwillabeardoifit'sindanger?Millie:Ifabear___________,it(2)___________people.attackcatchhuntliveprotectwalkwillattackDad:Whatwillapolarbeardoifit'shungry?Millie:Ifapolarbear(3)_________,it(4)_________fishfromthewater.Dad:Whatwillelephantsdoifthey'rethirsty?Millie:Ifelephants(5)__________,they(6)________untiltheyfindariver.Dad:Whatwilltigersdoiftheyliveinthewild?ishungrywillcatcharethirstywillwalkMillie:Tigers(7)_________fortheirownfoodifthey(8)_______________.Dad:Whatwilltigersdoiftheyhavebabies?Millie:Tigers(9)________asafamilyifthey(10)___________.Dad:Whatwillmalewolvesdoifthere'sdanger?Millie:Malewolves(11)__________theirfamiliesifthere(12)_________.willhuntliveinthewildwilllivehavebabieswillprotectisdangerBUsingunlessWecanuseunlesstosaythatsomethingcanonlyhappenorbetrueinaparticularsituation.Thesituationwillcontinueunlesshumansstophuntingthemfortheirfurandbones.Sometimeswecanuseif...