Unit-5-单元语法小专题

Unit5Whatwereyoudoingwhentherainstormcame?单元语法小专题(GrammarFocus)语法精讲过去进行时1．过去进行时的构成过去进行时由“was/were＋v.－ing”构成，当主语是第一人称单数或第三人称单数时用was，当主语是其余的人称和数时用were。2．过去进行时的句式(1)肯定句：主语＋was/were＋v.－ing＋其他．(2)否定句：主语＋wasnot(wasn't)/werenot(weren't)＋v.－ing＋其他．(3)一般疑问句：Was/Were＋主语＋v.－ing＋其他？肯定回答：Yes，主语＋was/were.否定回答：No，主语＋wasn't/weren't.(4)特殊疑问句：特殊疑问词＋was/were＋主语＋v.－ing＋其他？【注意】当疑问词作主语时，用“特殊疑问词＋was/were＋v.－ing＋其他？”形式。3．过去进行时的用法(1)过去进行时表示过去某一时刻正在进行或发生的动作，时间状语往往是表示过去的某一时间点，如atthattime，atthistimeyesterday，at＋时刻＋yesterday/lastnight，whensb.didsth.等。如：Iwasplayingfootballatthistimeyesterday.Whatwereyoudoingat8：00thismorning?WhenIcalledhim，hewashavingdinner.(2)过去进行时还表示过去某段时间内持续进行的动作。如：Theywerewaitingforyouthewholeafternoonyesterday.Iwasdoingmyhomeworkfrom6：30to8：00yesterdayevening.【辨析】过去进行时与一般过去时过去进行时强调某一动作在过去某时正在进行，一般用到的谓语动词是表示具体行动，动作可延续的，同时用到的时间状语表示的范围要小且具体。而一般过去时对谓语动词没有限制，用到的时间状语范围也不受限制，一般过去时着重表示在过去做过，基本上是一个结束了的动作。表示过去状态、抽象、不表具体动作行为的动词不能用于过去进行时，但可以用于一般过去时。如：Hewasmendinghisdaughter'sbikethismorning.(强调动作正在进行)Hemendedhisdaughter'sbikethismorning.(表明动作做过，并结束了)语法精练Ⅰ.用括号内所给单词的适当形式填空。1．Motherwas__sweeping(sweep)thefloorwhenIleft(leave)home.2．Whenthevisitorscame(come)，thestudentswere__having(have)anartclass.3．Johnwas__driving(drive)homewhenitrained(rain)lastnight.4．Herfatherwas__sleeping(sleep)atthattime.5．Mollywas__helping(help)hermomcleanthehouseatthreeyesterdayafternoon.Ⅱ.用when或while完成句子。6．Jimwaswalkinginthestreetwhenhefoundawatch.7．Iwassleepingwhilemymotherwascooking.8．While/WhenMarywasreading，Lisaarrived.9．WhenSusanwasten，shecouldplaytheguitar.10．Whatwereyoudoingwhentheaccidenthappened?Ⅲ.按要求完成下列句子，每空一词。11．Sandywastalkingwithherfriendsatthistimeyesterday.(改为否定句)Sandywasn'ttalkingwithherfriendsatthistimeyesterday.12．Whilewewerewalkingontheroad，itbegantorain.(用when改写句子)Wewerewalkingontheroadwhenitbegantorain.13．Cathywasdrawingapictureatninelastnight.(改为一般疑问句)WasCathydrawingapictureatninelastnight?14．Bobwaswaiting__for__a__buswhenImethim.(对画线部分提问)WhatwasBobdoingwhenyoumethim?Ⅳ.根据汉语意思完成句子，每空一词。15．当我看照片时，爸爸走了进来。FatherwalkedinwhileIwaslookingatthephotos.16．今天上午九点钟你妹妹在做什么？Whatwasyoursisterdoingat9：00thismorning?17．昨晚我给你打电话时，你正在做什么？WhatwereyoudoingwhenIcalledyoulastnight?18．玛丽散步时发生了什么事情？WhathappenedwhileMarywastakingawalk?19．我在买东西时看到了那场交通事故。IwasshoppingwhenIsawthetrafficaccident.