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一般过去时的讲解一.教学目标:一般过去时二.教学重难点:一般过去时(用法、动词过去式的变化规则等)实义动词do一般过去时的讲解三.教学步骤:(一)般过去时的概念一般过去时用来表示过去某一时间内发生的动作或存在的状态以及过去习惯性、反复性的动作。谓语动词要用动词的过去式,常和表示过去的时间状语连用,如yesterday昨天、lastnight昨晚、lastweek上周、lastyear去年,等。(二)一般过去时的结构(可分三类不同的结构)1.Be动词的一般过去时在没有实义动词的句子中使用be动词,amis的过去式为was;are的过去式为were肯定句式:主语+be(was,were)+其它.否定句式:主语+be(was,were)+not+其它.一般疑问句:Be(was,were)+主语+其它?注:在这种构成中,be动词有人称和数的变化,即要根据主语选用was/were。Be动词分为单数和复数,was是表示单数,were是表示复数。2.实义动词的一般过去时态肯定句要使用动词的过去式,否定句和疑问句要使用助动词do和does的过去式did.肯定句式:主语+动词(过去式)+其它否定句式:主语+didn’t+动词(原形)+其它【didnot=didn’t】一般疑问句:Did+主语+动词(原形)+其它【do,does的过去时均为did】?注:1.did和didn’t是构成一般过去时的助动词,其特点是要在其后跟动词的原形。2.实意动词do的一般过去时Idomyhomeworkeveryday.(用yesterday改写句子)Ididmyhomeworkyesterday.Ididn’tdomyhomeworkyesterday.(否定句)Didyoudoyourhomeworkyesterday?Yes,Idid./No,Ididn’t.(一般疑问句)3.情态动词的一般过去时态含有情态动词的一般过去时与含有Be动词的一般过去时,是十分相似,请注意观察。肯定句式:主语+情态动词+其它否定句式:主语+情态动词+not+其它.一般疑问句:情态动词+主语+其它?注:情态动词的过去式:can→could,may→might,must→must,will-would,should-should。4.特殊疑问句式:特殊疑问词+be过去式+主语+其他?特殊疑问词+情态助动词过去式+主语+动词原形+其他?特殊疑问词+do/does过去式+主语+动词原形+其他?Whatwasyourformername?你以前叫什么名字?WhywashelateforschoollastMonday?上星期一他为什么迟到?Whatcouldshedotwentyyearsago?20年前她能做什么?(三)一般过去时的判断标志词一般过去时的判断标志词一般过去时的判断标志词一般过去时的判断标志词yesterday,thedaybeforeyesterday,last+时间,thismorning时间+ago,justnow,amomentago,in+过去的时间,注意:一般过去时表示过去经常或反复发生的动作,常和often经常,always总是,onceaweek一周一次,等表示频度的时间状语连用(四)规则动词的过去式1.一般情况下,在动词原形后面加-ed。look→lookedplay→playedstart→startedvisit→visitedpull-pulled,cook-cooked2.以不发音e结尾的动词,在词尾直接加-d。live→liveduse→usedtaste-tasted3.以“辅音字母+y”结尾的动词,先将y改为i,再加–ed。study→studiedtry→triedfly→flied4.以重读闭音节(即辅音+元音+辅音)或r音节结尾,末尾只有一个辅音字母的动词,要先双写这个辅音字母后,再加–ed。stop→stoppedplan→plannedstop-stoppedprefer→preferred5.不规则动词的过去式需特殊记忆。如:am(is)-was,are-were(是),become_became(成为)go-went(走),(买)buy--bought,sell--sold(卖)come-came(来),take-took(拿),have(has)-had(有),begin(开始)--began,bring(拿来)--brought,can(能)--could,catch(捉住)--caught,cut(砍,割)--cut,do/does(做,干)--did,draw(画画,拉)--drew,drink(喝)--drank,drive(驾驶)--drove,eat(吃)--ate,fall(跌倒,落下)--fell,feel(感觉)--felt,fly(飞)--flew,get(获得)--got,give(给)---gave,grow(生长)--grew,keep(保持)--kept,know(知道,认识)--knew,learn(学习)--learnt,leave(离开)--left,let(让)--let,lie(躺,平放)--lay,make(使得,做)--made,may(可以)--might,must(必须)--must,read(读)--read,ride(骑)--rode,ring(鸣铃)--rang,run(跑)--ran,say说)--said,see(看见)--saw,sell(卖)--sold,send(送)--sent,set(放)--set,sing(唱歌)--sang,sit(坐)--sat,sleep(睡觉)--slept,speak(说话)--spoke,spend(花费)--spent,stand(站立)--stood,swim(游泳)--swam,teach(教)--taught,tell(告诉)--told,think(认为)--thought,throw(投掷)--threw,understand(懂得)--understood,wear(穿)--wore,will(将要)--would,win(获胜)--won,(弯曲)bend--bent,blow--blew(吹),选择choosechose,(五)一般过去时的基本用法①表示过去某个特定时间发生的动作或存在的状态。Hesuddenlyfellilllastnight.他昨晚突然病倒了。②表示过去的习惯性或经常发生的动作Shewenttothecinemaonceamonthwhenshewasatalkedbytheriverside.我在乡下时经常在河边散步。③叙述过去连续发生的一件件事Shegotupearly,fetchedwater,cleanedtheroomandthenwentoutforawalk.她早早起床,提水,打扫房间然后出去散步。(六)课后练习一般过去时练习题,.请用正确动词形式填空1.He(live)inWuxitwoyearsago.2.Thecat(eat)abirdlastnight.3.We(have)apartylastHalloween.44.Nancy(pick)uporangesonthefarmlastweek.5.I(make)amodelshipwithMikeyesterday.6.They(play)chessintheclassroomlastPElesson.7.Mymother(cook)anicefoodlastSpringFestival.8.Thegirls(dance)atthepartylastnight.1.9.I(watch)acartoononSaturdaylastweek.10.______you_______(visit)yourrelativeslastSpringFestival?11.______he_______(fly)akiteonSunday?Yes,he______.12.GaoShan_______(put)upthepicturelastnight.13.I____________(sweep)theflooryesterday.1.14.14.What______she_______(find)inthegardenlastmorning?15.Herfather_______(read)anewspaperlastnight.16.Mike_________________(notgo)tobeduntil12o’clocklastnight.17.Ilistenedbut___________(hear)nothing.18.Howmanypeople________(be)thereinyourclasslastterm?II.改错题1.HowisJaneyesterday?_____________________2.Hegotoschoolbybuslastweek.____________________________3.Heoftengoeshomeat6:00lastmonth.____________________________4.Icanflykitessevenyearsago.______________________________5.Didyousawhimjustnow.____________________________________三、按要求变换句型。1.Frankreadaninterestingbookabouthistory.(一般疑问句)_______Frank_______aninterestingbookabouthistory?2.Hecleanedhisroomjustnow..(划线提问)What________he_______?3.ThomasspentRMB10onthisbook.(否定句)Thomas______________RMB10onthisbook.4.Myfamilywenttothebeachlastweek.(划线提问)________________________family_______lastweek?1.I_________(have)anexcitingpartylastweekend.2._________she_________(practice)herguitaryesterday?No,she_________.3.What________Tom________(do)onSaturdayevening?He________(watch)TVand__________(read)aninterestingbook.4.Theyall_________(go)tothemountainsyesterdaymorning.5.She_________(notvisit)herauntlastweekend.She________(stay)athomeand_________(do)somecleaning.6.When________you_________(write)thissong?I__________(write)itlastyear.7.Myfriend,Carol,________(study)forthemathtestand________(practice)Englishlastnight.8.________Mr.Li__________(do)theprojectonMondaymorning?Yes,he_________.9.How_________(be)Jim'sweekend?It_________(benot)bad.10.________(be)yourmotherasalesassistantlastyear?No.she__________.
本文标题:八年级上-一般过去时的讲解
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