八年级英语下册Unit5 过去进行时语法教学课件

1、过去进行时,1含义：（概念）表示过去某个时刻的动作。（或过去一段时间正在进行的动作）2.句子结构:：be(was/were)+doing即：主语+was/were+doingsth.+,3.时间状语词:at8oclocklastnight/thistimeyesterday/at5:00yesterdayafternoon/atthattime,then等连用(或者用另一动作来表示过去的时间),过去进行时,表示过去某个时刻正在进行的动作。例句：whatwereyoudoingatninelastnight?昨晚九点你正在干什么？,iwastakingashoweratninelastnight

2、.昨晚九点我正在洗澡.theywereplayingbasketballat5oclockyesterdayafternoon.昨天下午五点他们在打篮球。：表示在过去某一时间内正在进行的动作。shewaswritingaletterwhenicamein.我进来时，她正在写信。thebarberwascuttingmyhairwhentheyarrived.他们到达时，理发师正在给我剪头发。,观看动画教学,whatweretheydoingat10:30lastmonday?,theywererunning.,whatwereyoudoingat10:10yesterdaymorning?,i

3、wasgoingshopping.,wherewassheat9:00yesterday?ithinkshewasin/atshewassweepingtheflooratthattime.,at9:00lastnight,tom,what_tom_at7:30thismorning?,she_at7:30thismorning.,wasdoing,wascookingbreakfast,onepoint,what_they_from8to9lastnight?,they_from8to9lastnight.,weredoing,weretalkingonthephone,onepoint,w

4、hatwasalicedoingwhenigotoutoftheshowerfromthebathroom?,shewasplayingthepiano.,talkaboutthepictures,whatweretheydoingyesterdayafternoon?,1,2,3,iwaswewere,cookingameal.playingvolleyball.havingapeclass.watchingtv.workinginthechemistrylab.sweepingthefloor.makingamodel.feedingmydog.,whatwereyoudoing,last

5、night?lastsaturday?attenoclock?yesterdaymorning?atnoonyesterday?yesterdayafternoon?,pairwork:,patterns:a:whatwereyoudoingatnineoclocklastsundaymorning?b:iwassleeping.howaboutyou?a:iwasdoingmyhomework.b:youarekidding,when和while的用法区别,1.when既指时间点，也可指一段时间;while只指一段时间.2.when说明从句的动作和主句的动作可以是同时，也可以是先后发生；wh

6、ile则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。,whentheufolanded,theboywaswalkingdownthestreet.,=whiletheboywaswalkingdownthestreet,theufolanded,mymotherwascookingdinnerwhilemyfatherwaswatchingtv.,(1)“当的时候”,如后面连接的动词为进行时态,则用while多于用when。而when通常与瞬间性动词或延续性不强的动词连用。(2)如果while前后的动词都是进行时态,while可译为“与此同时”iwasreadingwhi

7、lemybrotherwasdrawing.,a:whatwereyoudoingwhenthetrafficaccidenthappened?,b:wewerehavingaparty.,trafficaccident,whatweretheydoingwhentheplanetookoff?,theywereswimmingintheriver.,takeoff,whatwasalicedoingwhenigotoutoftheshowerfromthebathroom?,shewasplayingthepiano.,观看动画教学,过去进行时着重描述当时正在持续进行的动作，它的特点是：暂时

8、，持续和未完成，强调过程；一般过去时表示发生过的动作或存在的状态，即表示动作发生过，而且已经结束了，强调结果。,过去进行时与一般过去时的区别,过去进行时侧重表示动作延长的时间长度;一般过去时表示过去某时发生过某事，侧重说明事实。,he_aletterlastnight.（过程描写，他一直写，不一定完成）he_aletterlastnightandposteditthismorning（只说明他写了的事实，动作已结束）,waswriting,wrote,相同的过去时间可能会有不同时态,注：下列几类动词通常不用过去进行时。表示状态的动词be；感官动词：feel,hear,see,smell,tas

9、te等;表示思维或心理状态的动词：believe(认为),forget,consider,know,remember,hope,wish,want等；表示所属关系的动词：belong,have,own,hold(容纳)等。,exercises,choose“when”or“while”tofillintheblanks.(1)iwaswalkinginthestreet_theaccidenthappened.(2)_youhaveameeting,youshouldturnedoffyourmobilephone.(3)_youhavepeclass,youshouldwearsportss

10、hoes.(4)_iwasdoingmyhomework,thetelephonerang.(5)_itwasraining,theplanetookoff.(6)_theteacherwasspeakingtoclass,nickstoodupsuddenly.,when,when,when,while,while,while,用所给动词的适当形式填空：1.we_(wash)ourclothesatsixyesterdayevening.2.whileann_(talk)withherdeskmate,theteachercamein.3.look!mary_(clean)theroom.4.what_you_(talk)aboutjustnow?-weweretalkingaboutthemovie.5.they_(move)toparislastmonth.,6.he_(read)anovelfrom8to12yesterdaymorning.7.what_he_(do)atfiveoclockyesterdayafternoon.8.he_(watch)tvwhenicamein.9.she_(do)herhomeworkwhilehermother_