含义:表示过去某个时刻正在进行的动作。结构:be(was/were)+doing例句:Whatwereyoudoingatninelastnight?Iwastakingashoweratninelastnight过去进行时过去进行时含义:表示过去某个时刻正在进行的动作。结构:was/were+doing例句:IwashavinganEnglishclassatthistimeyesterday.现在进行时含义:表示现在正在进行的动作。结构:is/am/are+doing例句:IamhavinganEnglishclass.合作探究(二):Pleasethinkaboutthesequestions:1.过去进行时的定义:表示在过去某一时刻或某一时间段正在进行的动作.2.句型结构:was/were+动词-ing3.时间状语:1)一般情况下有上下文的提示(2)由when和while引导的时间状语(3)具体到过去某个时间点如,atthistimeyesterday,at9o’clockyesterday,----3.Igotothe__________(理发店)tohaveahaircutonceamonth.4.Whentheteachercamein,_________________(所有的学生正在读书).5._______________(那个女孩在写信)whenIwentout.barbershopallthestudentswerereadingbooks.Thatgirlwaswritingaletter总结•1.when可指时间点,又可指时间段,从句中可用延续性动词,也可用非延续性动词。•2.while总是指一个时间段,从句中必须用延续性动词。比较“when”and“while”1.when“当…..时候”后面跟的动作不延续,常跟一般过去时WhentheUFOtookoff,theboywastakingphotos1.while“当…..时候”后面跟的动作延续,常跟过去进行时Whiletheboywastakingphotos,theUFOtookoff,TargetLanguage:比较“when”and“while”2.WhentheUFOlanded,theboywaswalkingdownthestreet.Whiletheboywaswalkingdownthestreet,theUFOlanded1.Whenthealiengotout,thegirlwasshopping.Whilethegirlwasshopping,thealiengotout.TargetLanguage:==getout出去;离开getoutof从…出来getoutoftheshower洗完澡出来talkonthephone通过电话交谈ExercisesChoose“when”or“while”tofillintheblanks.•1._____Tomwaseatingsupper,itbegantorainoutside.•2.Don’tuseyourcellphone_____youaredrivingacar.•3.Whatwereyoudoing_____Mr.Zhoucomein?•4.Jimisgoodatmath_____MaryisgoodatEnglish.•5.WewerewatchingTV_____theelectricitywasoff.WhileWhileWhileWhenWhen短语•9.Ataroundteno’clockinthemorning.•在上午,在早晨inthemorning•在下午intheafternoon•在晚上intheevening•在十点钟左右ataroundteno’clock•在正午atnoon•在晚上atnight•*请注意介词的不同知识点•10.takeoff•(1)脱下eg.Pleasetakeoffyourcoat.It’swarmintheroom.•请脱下大衣,屋子里面很暖和。•(2)起飞eg.ThegirlwaseatingtheicecreamwhentheUFOtookoff.•当UFO起飞的时候,那个女孩正在吃冰激淋。•11.talkonthephone通过电话谈话•注意:这里要用介词on•12.getoutoftheshower洗完澡出来•getoutoftheUFO从UFO中出来•getout出来•13.IwaswalkingdownthestreetwhenaUFOlandedrightinfrontofme.•当一个UFO恰好落在我面前的时候,我正在街上走。•right在这里是副词,“恰好”“正好”的意思,表示强调。•例如rightnow(现在)•righthere(就在这儿)•rightinfrontofme恰好在我前面•14.besurprised(某人)很吃惊•eg.HewassurprisedwhenIsawhim.•我看见他的时候,他很吃惊。•另外,surprisesb.指“让某人吃惊”•eg.Idon’twanttosurpriseyou.•我不想让你吃惊。•15.Beforethepolicearrived,thealienlefttheshop.•在警方到达之前,外星人离开了商店。•before“在……之前”引导时间状语从句•16.bescared(某人)给吓坏了,害怕了•eg.Hewasscaredwhenheheardthestrangevoice.•当他听到了那个奇怪的声音,他害怕了。•17.runaway逃跑•18.walkaroundthestation在车站走来走去•19.Shedidn’tthinkaboutlookingoutsidethestation.•她没想到过要往车站外面看一看。•thinkabout考虑•lookingoutsidethestation是动名词短语,做thinkabout的宾语。•lookoutside往外看•WhileHaiYanwasatthedoctor’s,Iwasgoingtoclass.•当海燕在诊所的时候,我正要去上课。•atthedoctor’s在诊所(医院)•atthebarber’s在理发店知识点总结3.ThiswasoneofthemostimportanteventsinmodernAmericanhistory.oneof+名词复数形式“---之一”.4.Althoughsomepeoplemaynot---whentheyheardabouttheevent.Although虽然,但是不能与but连用.hearabout=hearof听说,得知.(hearfrom---收到-----来信).5.HisflightaroundtheEarthlastedabout22hours.
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