初中八大时态--整合版课件 30页

初中英语八大时态讲解一般现在时过去时将来时进行时现在过去完成时现在一般过去过去\n一般现在时过去时\n观察并讨论：以下句子有何特点？（结构/标志词）1、Ioftengotoschoolbybike.2、Theearthgoesroundthesun.3、Herecomesthetrain.一般现在时1.表示事实,现状,性质或经常的,习惯的动作（句1）2.表示普遍真理.（句2）3.表示在现在时间里所发生的一个动作.（句3）基本结构：S+V+…(主谓一致)常与often,usually,always,sometimes,today,everyday,onSundays等时间状语连用。\n一般现在时动词第三人称单数变化规则:一般情况下，动词后面直接加-s.eg:work->works2）辅音字母+“y”结尾的动词，去y为i再加eseg:carry->carries3）以s、x、ch、sh或o结尾的动词，加“es”eg:guess->guessesrelax->relaxeswatch->watcheswash->washesgo->goes\n1）他每天走路去上学。Hegoestoschoolonfooteveryday.2）我们经常在家吃晚饭。Weoftenhavesupperathome.3）她每个周日都不用工作。Shedoesn’t(doher)workeverySunday.翻译下列句子：\n观察并讨论：以下句子有何特点？（结构/标志词）1、Iplayedfootballyesterday.2、Theybegantheworktwomonthsago.3、Therewasaparkherein1995.4、Iwatchedamovielastweek.一般过去时表示过去发生的动作或存在的状态基本结构：主语+动词过去式+…常与:…ago,yesterday,lastweek,in1995等连用.\n动词过去式变化规则一、规则动词的过去式由“动词原形+-ed”构成，具体变化有：1. 一般的直接在词尾加-ed。如: want—wanted2. 以不发音的e结尾的在词尾加-d。如：like—liked, live—lived3.以一个元音字母加一个辅音字母结尾的重读闭音节动词，先双写结尾的辅音字母，再加ed。如stop—stopped4. 以辅音字母加y结尾的动词，先把y变成i，再加-ed。如：study—studied\n动词过去式变化规则二、不规则动词参照不规则动词表,需要专门记忆。eg:build—built,lend—lent,send—sent,spend—spent等\n用所给词的适当形式填空Where’sthecamera?It___(is)thereamomentago.Tom_______(go)tovisitafarmlastweek.Where______(be)youjustnow?It______(be)therejustnow,butitisn’ttherenow.waswentwerewas\n进行时现在过去\n现在进行时表示现在正在进行或现在这段时间在进行的动作。基本结构：主语+be(am,is,are)+v-ing+…句中常出现now,atpresent ,look,listen等标志词观察并讨论：以下句子有何特点？（结构/标志词）1.Thestudentsarelisteningtotheteachercarefullynow.2.WearestudyingEnglishatpresent.3.Look!Theyaredancing.4.Listen！Lilyissinging.5.Sheiswritingaletterthisyear.\n动词现在分词(V-ing)的构成①   一般动词直接在词后加-ingdo–doing        read-readingwork–working    study–studyingwatch–watching  jump–jumpin②  以不发音的字母e 结尾的动词，应先去掉 e 然后加 –ingtake–takingcome–comingleave–leaving   live–livingdance–dancingwrite–writing\n③  以“一个元音字母 + 一个辅音字母”结尾的动词，应先双写这个辅音字母然后再加-ingstop–stopping   begin–beginningswim–swimmingrun–runningsit–sitting(注意：listen–listening;  open–opening;eat–eating ;rain–raining;   sleep-sleeping)\n小试身手1.Look!Thetwins_____theirmotherdothehousework.A.helps         B.helpC.arehelping       D.helpedIt’s 5 o’clocknow.We(have)suppernow.3.Whatyou(do)atpresent?Carehavingaredoing\n过去进行时表示过去某一时刻或某阶段时间正在进行的动作句中常出现：at+时刻+过去时间副词;atthis/thattime+last…;when;while等词结构 ：主语+be(was/were)+v-ing+…观察并讨论：以下句子有何特点？（结构/标志词）1.  Itwasrainingat7:00thedaybeforeyesterday.2.  Theywerebuildingareservoiratthistimelastwinter.3.  Wewerereadingwhentheteachercamein.4.MymotherwascookingwhilemyfatherwaswatchingTV.5.Amywaswritingabookthelastwholeyear.\n小试身手1. 昨天那个时候Tom 正在看电影。Tomwaswatchingamovieatthattimeyesterday.2. 上周日四点我们正在游泳。Wewereswimmingatfourp.m.lastSunday.3.老师进来时我们正在读书。Wewerereadingwhentheteachercamein.4.那时，我的姐姐在唱歌而我在跳舞。MysisterwassingingandIwasdancingatthattime.\n课后作业用所给的动词的正确形式填空1.Theboy__________（draw)apicturenow.2.Listen！Somegirls_______________(sing)intheclassroom.______Helen____________(wash)clothes?---Yes,sheis.4.Whilewe__________(wait)forthebus,agirl__________(run)uptousatthattime.5.What_____you(do)atthattime?---We(watch)TV.isdrawingaresingingIswashingwerewaitingwasrunningweredoingwerewatching\n将来时一般过去\n表示将要发生的动作或情况常用时间状语有:tomorrow，nexttime,later(on),soon,inamonth,fromnowon等.结构：1.“begoingto+动词原形”表示打算或准备要做的事情,或者主观判断即将要发生的事。（句1）2.“Will/shall+动词原形”表动作在现在或目前还未发生，要在将来的某个时间内发生（句2&3）观察并讨论：以下句子有何特点？（结构/标志词）1、Itisgoingtorainsoon.天快要下雨了。2、Ishallbeeighteenyearsoldnextyear.明年我就18岁了3、Wewill helphim if he asks us.如果他请求我们，我们愿意帮助他。一般将来时\n选择填空1.There_______ameetingtomorrowafternoon.willbegoingtoB.willgoingtobeC.isgoingtobeD.willgotobe2.Charlie_____herenextmonth.isn’tworkingB.doesn’tworkingC.isn’tgoingtoworkingD.won’twork3.He________verybusythisweek,he________freenextweek.A.willbe;isB.is;isC.willbe;willbeD.is;willbe4.There________adolphinshowinthezootomorrowevening.A.wasB.isgoingtohaveC.willhaveD.isgoingtobeCDDD\n过去将来时表示对过去的某一个时间来讲，将要发生的动作。结构 ：表示按计划或安排即将发生的事①主语+would+动词原型+…②主语+was/weregoingto+动词原形观察并讨论：以下句子有何特点？（结构/标志词）1.  Hesaidhewouldgototheparkthenextday.Hetoldmethathewasgoingtoreturnhome.\n小试身手1. Fathersaidthathe______metoBeijingthenextyear.A.tookB.wouldtakeC.takesD.willtake2.Jennysaidshe_____herholidayinChina.A.spentB.willbespentC.wasgoingtospendD.willspend3.Iwasn’tsurewhetherLucy(come)thenextyear.4.MissZhangsaidshe(visit)theGreatWallnextsummer.BCwouldcomewasgoingtovisit\n完成时现在过去\n现在完成时①表示过去发生或已经完成的某一动作对现在产生的影响或结果的动作。基本结构：主语+have/has+过去分词（V.-ed）+…句中常出现already、never、ever、just、yet等时间状语标志词观察并讨论：以下句子有何特点？（结构/标志词）1、Ihavealreadyfinishedmyhomework.2、Hehasneverheardsuchbadnews.3、HaveyoueverbeentoBeijing?\n现在完成时②表示过去已经开始，持续到现在的动作或状态基本结构：主语+have/has+过去分词（V.-ed）+…句中常出现for+一段时间…；since+时间点…标志词观察并讨论：以下句子有何特点？（结构/标志词）1、Hehaslivedheresince2001.2、WehavestudiedEnglishforsixyears.\n1）AAA型(三种都一样)如：cost-cost-costcut-cut-cuthurt-hurt-hurtshut-shut-shutset-set-set2）ABB型(过去式与过去分词相同)如:bring-brought-broughtcatch-caught-caughtlead-led-led过去分词变形规则\n3）ABC型(三种都不一样)如：begin-began-begungrow-grew-grownring-rang-rungbreak-broke-broken4）ABA型(原形与过去分词相同)如:come-came-comebecome-became-becomerun-ran-run\n()1.You’veneverseensuchawonderfulfilmbefore,_______?A.haven’tyouB.haveyouC.doyouD.don’tyou()2.Mr.Green____inChinasincefiveyearsago.A.livedB.haslivedC.livesD.isgoingtolive()3.Hisgrandma______fortwoyears.A.diedB.hasdiedC.wasdeadD.hasbeendeadBB()4.－_____you____totheUnitedStated?－No,never,butIwenttoCanadaafewyearsagoA.Have;beenB.Have;goneC.Did;goD.Do;go()5.Howlonghaveyou_____thefootballteamoftheschool?A.playedB.beenatC.joinedDbeeninDAD\n过去完成时表示一个动作在过去某一个动作前已经发生或完成。基本结构：主语+had+过去分词（V.-ed）+…分析主从句的时间先后顺序观察并讨论：以下句子有何特点？（结构/标志词）1、Wehadfinishedtheworkwhenthebosscameback.老板回来时我们已经完成工作了。2、IhadlearnedEnglishforthreeyearsbeforehecamehere.在他来这里前，我已经学了三年的英语。\n1.Ididn’tgotothefilmlastweek,because_________________________.(我已经看过两次了)2.She______________________(给我们看裙子)shehadjustbought.3.HehadlearnedEnglish________________(三年)beforehecamehere.Ihadalreadyseenittwiceshowedusherdressforthreeyears