Unit8语法讲义牛津深圳版七年级下册英语

七（下）U8◆【语法部分】时间状语从句时间状语从句时间状语从句用于说明主句动作发生或进行的时间。时间状语从句位于主句之前时，要用逗号将从句和主句隔开；位于主句之后时，则不需要用逗号。【由when引导的时间状语从句的意义和时态】意义表示从句的动作与主句的动作同时发生。时态当表示现在的时候，主句和从句同用现在时态；当表示过去的时候，主句和从句同用过去时态；当表示将来的时候，主句用一般将来时，从句用一般现在时表将来。如：Whenthebellrings,herushesoutoftheclassroom.Whenthebellrang,herushedoutoftheclassroom.Hewillrushoutoftheclassroomwhenthebellrings.当铃声响起时，他就会冲出教室。（从句用一般现在时表示将来发生的动作“ring”）拓展时间状语从句的引导词除了when之外，常用的还有：before在.....之前；after在......之后；while当....时；assoonas一.....就......；until直到；since自从；once一旦；as随着。如：IlockthedoorbeforeIleavehome.Whileheissleeping,sheisrunning.Jimranawayassoonashesawthepolice.Onceyoutrythedish,youwillneverforgetthetaste.Astimegoesby,Joyceknowsshewaswrong.【巩固练习】选择最佳答案：________,youdecidetodosomething,youshouldn’tgiveupeasily.A.OnceB.ThoughC.AndD.BeforeIwastakingashower_______thephonerang.A.whyB.whereC.whenD.whatWillyoucallme_________youfindmycat?A.becauseB.assoonasC.thoughD.thenI________themanagerthereportwhenhe________back.A.willgive,willeB.give,esC.willgive,esD.give,willeTom________awayquietlywhennoonewaslooking.A.walkedB.iswalkingC.walkD.walks【usedto/didnotuseto】usedtodosth意思为“过去常常做某事”，表示过去经常发生的动作或存在的状态，而现在此动作已不再发生或此状态不存在。这个结构含有今昔对比之意。其否定式为didnot/didn’tusedtodosth;其疑问式为did...usetodosth.如：Heusedtoswiminthisriverwhenhewasyoung.Wedidn’tusetolivehere.Wheredidyouusetobuyclothes?【巩固练习】根据题目要求完成下列句子。Alexusedtogoswimming.（改为疑问句）__________Alex___________________goswimming?Mikeusedtoplaybasketball.（改为否定句）Mike________________________________playbasketball.Harryusedtobeverythin.（就划线部分提问）What________Harry___________________belike?【强化练习】选择最佳答案_________shesatdown,itstartedtosnow.A.ThoughB.BecauseC.WhenD.WhyItsuddenly_______whenwewerehavingapicnic.A.wasrainingB.rainedC.rainsD.willrainJackismakingasnowmaninChinawhileKelly________inAustralia.A.wasswimmingB.swamC.willswimD.isswimmingWhenmymothergoesshopping,she_______herclothbag（布袋）.A.willtakeB.takeC.tookD.istakingTheshyboystoppedtalking________hesawme.A.soB.butC.assoonasD.then根据题目要求，改写下列句子。1.Alanusedtoenjoyplayingchess.（改为一般疑问句）______________________________________________________Iusedtogotoschoolbyunderground.（改为否定句）______________________________________________________Mygrandmausedtodrawpictures（就划线部分提问）______________________________________________________将下列句子翻译成英文。1.我上学时总是看到这只猫。_______________________________________________________2.昨天下雨时，约翰待在家里。_______________________________________________________3.当你取得进步时，我会给你买一辆自行车。_______________________________________________________四、选择最佳答案：_______mygrandpawas13yearsold,hemovedtoGuangdongProvincewithhisparents.A.WhenB.OnceC.WhereD.WhatWhenmymumcamein,I_______myhomework.A.didB.wasdoingC.haddoneD.willdo______he_____flykiteswithyou?A.Did,usedtoB.Had,usedtoC.Was,usetoD.Did,useto五、圈出下列句子中的错误，并在横线上改正。IbuyanewnotebookwhenIwentshoppingthismorning.________________________________________________________________Shedidn’tusedtogoswimmingatweekends.________________________________________________________________Mydadusedtobuyingnewspapersint