外研版八年级上册英语Unit 6《When disaster strikes》L2教学课件（25秋新教材）.ppt

教学课件外研版八年级上册英语（25秋新教材）Unit6WhendisasterstrikesGrammarLearningObjectivesInthislesson,youwill:1.mastertheusageofpastcontinuoustense.2.distinguishbetweenpastcontinuoustenseandpastsimpletense.3.tellastoryaboutanaturaldisaster.ThinkandShareReadthesentencesandcirclealltheverbs.(a)Thatnight,Iwassleepingwhenthegroundshookveryhard.(b)Wemovedonwhilethecloudwasspreadingoverthelandlikeaflood.wassleepingwasspreadingshookmovedWhat’sthedifferencebetweenthesetwogroupsofverbs?wassleepingwasspreadingshookmoved动词的一般过去式was/were+动词的现在分词形式表示过去某个时刻或时段正在进行的动作或存在的状态。Nowfindmoresentenceswiththesestructuresinthereadingpassage.MymotherandIwerestayinginatownnearPompeii.Bysixoclockthenextmorning,manybuildingswerestillshaking.Allaroundus,womenwerecalling,childrenwerecryingandmenwereshouting.Peopleweretryingtofindtheirfamiliesinthedark.过去进行时一般来说，要表示过去某个时刻或某一时段正在进行的动作，我们常使用过去进行时。常和过去进行时连用的时间状语有:then,atthis/thattime,?yesterday,at...,lastnight等。E.g.Iwasreadinga?bookatthattime.Wewerehavinga?partyatninelast?night.Youwere?sleepingthen.Theywereplaying?basketballat4pm?yesterday.过去进行时的构成1.肯定句主语＋was/were+动词现在分词＋其它E.g.Alicewassitting?withhersisterbytheriver.Theywerehaving?ateapartyinthegarden.2.否定句主语＋was/were?not+动词现在分词＋其它E.g.Iwasn’t?readinga?bookatthattime.Weweren’t?havinga?partyatninelast?night.3.一般疑问句及其回答—Was/Were＋主语＋动词现在分词＋其它?—Yes,主语＋was/were./No,主语＋was/werenot.E.g.—Wereyou?readinga?bookatthattime?—Yes,Iwas./No,Iwasnot.—Were?you?havinga?partyatninelast?night?—Yes,wewere./No,wewerenot.一般过去时和过去进行时的区别这两种时态虽然都表示过去发生的事情，但是过去进行时强调过去某一时刻或时段正在进行或持续的动作;一般过去时表示过去的时间里所发生的动作，所表示的动作往往已经完成。E.g.Laurawasreadinganovelateighto’clocklastnight