优质课堂八年级英语下册_unit 5 what were you doing when the yainstorm came单元语法聚焦五课件 （新版）人教新目标版

单元语法聚焦五 单元语法聚焦五 语法点击 过去进行时过去进行时表示过去某一时间点正在进行的动作或过去某一段时间内一直进行的动作 1 构成主语 was were doing 其他 如 IwaswatchingTVat9o clocklastnight 昨天晚上九点钟我在看电视 2 过去进行时的标志词过去进行时的标志词有at8o clocklastnight atthistimeyesterday atthattime等 单元语法聚焦五 3 when和while的区别 1 表示 当 的时候 时 如果后面连接的动词为延续性动词 则多用while 而when通常与短暂性动词连用 当后面的句子表示一种状态时 两者可以互换 如 WhileIwasbuyinganewspaper mydogranaway Iwasbuyinganewspaperwhenmydogranaway 在我买报纸的时候 我的狗跑开了 Iwasveryshortwhen whileIwasinprimaryschool 我上小学时 个子很矮 单元语法聚焦五 2 如果while前后的句子都是进行时态 包括现在进行时和过去进行时 while可译为 与此同时 如 Iwassleepingwhilemymotherwascookingbreakfast 我妈妈做早餐时我在睡觉 3 当while前后的句子描述的情况相对或相反时 while可译为 而 while更强调并列的对比而非转折 如 IlikeChinesefoodwhileshelikesFrenchfood 我喜欢中餐 而她喜欢法式餐 单元语法聚焦五 4 当when引导的带有短暂性动词的从句与进行时态的主句连用时 when有时候可以根据情况译为 突然 就在这时 如 Iwassleepingwhenthedooropened 我正在睡觉 突然门开了 单元语法聚焦五 实战演练 用所给词的适当形式填空1 Myfather still sleep whenI get upyesterdaymorning 2 Mygrandma cook breakfastwhileI wash myfacethismorning 3 Mymother sweep thefloorwhenI leave home 4 Thestudents have abiologyclasswhenthevisitors come was sleeping got wascooking waswashing wassweeping left werehaving came 单元语法聚焦五 5 Thedriver drive homewhenit rain lastnight 6 SomestudentsfromClassFour play basketballwhenI see themintheplayground 7 DoctorLiuwasondutylastnight He still work inthehospitalat10o clocklastnight 8 Thestreetseller sell clotheswhenhe find apurseontheground wasdriving rained wereplaying saw was working wasselling found 单元语法聚焦五 9 Mr Wangspendsalotoftimewritinghisnoveleveryday He still write atmidnightlastnight 10 I read ahistorybookwhensomeone knock atthedoor was writing wasreading knocked 单元语法聚焦五 用when或while填空1 Tomwaseatingsupper itbegantorainoutside 2 Don tuseyourcellphone youaredrivingacar 3 Whatwereyoudoing Mr Zhoucamein 4 Jimisgoodatmath MaryisgoodatEnglish 5 WewerewatchingTV theelectricitywasoff While While when While when 单元语法聚焦五 6 Peterwassleeping athiefbrokeintohishouse 7 Itwassnowing wearrivedinTokyo 8 Sheleftherhometown shewasfive 9 Iwas