时态不同时间发生的动作,动词要用不同形式1.v原形2.v+s/es(三单现)1.Sheworksinafactory .2.Iwasdoingmyhomeworkatthistimeyesterday.3.Weareg oingtohaveapicnicthisSunday.4.Theyheldasportsmeeting lastweek.5.Areyouhelpingyourmother.情景创设。情景1class,L ook?atmecarefully!(我把门打开)--Iopenedthedoorjustnow.(看门现在 的状态)--Thedoorisopennow.把这两个句子用一句话表达: ---Ihave?openedthedoor.????????情景2让一个学生走出教室 ---WangNinglefttheclassroom.现在的状态???????? ---WangNingisn''tintheclassroom.?????????????????? ---WangNinghaslefttheclassroom.情景3我把黑 板擦干净。?---Icleanedtheblackboardamomentago.---Theblackbo ardiscleannow.---I?havecleanedtheblackboard.(通过三个情景,让 学生观察三个句子间的联系,自己总结完成时用法一的概念,然后总结出完成时的构成。根据情景,学生更能加深对过去发生的动作与现在有联系, 用现在完成时。)Task:DoEx.1.onPage1现在完成时的时间标志(1)already和yet already一般用于肯定句中,yet一般用于否定句和疑问句中。(2)表示到说话为止的过去时间状 语,如just,now等。肯否问答Payattention注意1.现在完成时句中常见的时间状语A.表示从过 去一直持续到现在,不能是具体过去时间Task:DoEx.2.onPage1现在完成时与一般过去时的区别:一 般过去时表示发生在过去的动作,和现在无关;Iopenedthedoorjustnow.(过去开 过门,不知现在门是否开着)现在完成时则强调某一发生在过去的动作与现在的关系,如对现在产生的结果或影响等。Ihaveope nedthedoor.(过去开过门,现在门仍开着)A:Lookatthepicture,whoishe? B:He’sWangZhizhi.A:He____already______(become)abask etballstarinChina.A:Buthe______(play)basketballsomeyea rsago.现在完成时和一般过去时He____________(notwork)inourschoolyet .He______(come)toourschoollastyear/in2002.They_________ ______(cook)thesupperalready.They___________(cook)thesupp erhalfanhourago.Task:DoExes.3-4.onPage2总结现在完成时态的构 成:have/has+过去分词现在完成时与一般过去时的区别:现在完成时与现在有关系;一般过 去时与现在无关系。作业复习现在完成时的用法。整理做错的题,记载入错题集。现在完成时态was/were+v -ing动词形式时间名称过去某一时间,在进行过去进行时过去(与现在无关)一般过去时即将,计划一般将来时正在进行 现在进行时平时,经常一般现在时已学习过的时态am/is/are+v-ing1.will/shall+v原形2.am/ is/aregoingto+v原形1.v-ed(规则动词)2.不规则动词1.was/were+现在分词一般现 在时过去进行时一般将来时一般过去时现在进行时判断下列句子的时态现在完成时含义:过去发生的动作对现在造成的影响或结果。 动词构成:have/has+v过去分词havebreakfastIhavejusthadmybreakfas t.(现在我不饿)I’mnothungrynowmovedherein2000Istilllivehe rehave/has+v过去分词助动词否定haven’thasn’t疑问Haveyou……?Hashe… …?现在完成时的结构形式:动词的过去分词形式1.规则动词:2.不规则动词:talk--talked--talked move--moved--movedcarry--carried--carriedstop—stopped--stopped AAA型:put—put--putABB型:meet—met--metABA型:run—ran--runABC型:si ng—sang--sung动词过去分词1.动词的过去分词与其过去式相同,即在动词原形后加-ed或-d构成,如动词以y结尾,变 y为i,再加-ed。例如:动词原形过去式过去分词work workedworkedarrivearr ivedarrivedstudystudied studiedstopstopped stopped2.不规则动词的过去分词有其特殊形式,例如:动词原形过去式过去分 词putputputcut cutcutshut shutshut2.不规则动词的过去分词有其特殊形式,例如:动 词原形过去式过去分词meetmetm ettelltoldtold saysaidsaidfin dfoundfound2.不规则动词的过去分词有其特殊形式,例 如:动词原形过去式过去分词runran runcomecameco mebecomebecamebecome2.不 规则动词的过去分词有其特殊形式,例如:动词原形过去式过去分词Sings angsungseesaw seengivegavegiven dodiddonefinish,homewo rkIhavefinishedmyhomework.Hehasfinishedhishomework haven’tHasheYes,hehasNo,hehasn’t不能是具体过去时间(1).for+表示一 段时间的短语(2).since+表示过去时间点的词语(3).since+表示过去时间的时间状语从句 Ihavebeenateacher______ayear.Hehasbeenatthis school_______1992.Wehavelearned1,000Englishwords _______wecametothisschool.forsincesincee.g. B.just,already,yet,now有此类副词时,常强调动作完成,不强调动作的持续. e.g.Ihave_____finishedmyhomework. Ihavefinishedmyhomework_______.Ihaven’tfinish edmyhomework______.justalreadyyet注意:当在肯定陈述句中含有already或jus t时,在转换成否定句或疑问句时,要把句中的already或just去掉,在句末加上yet.Ihaven’tseen thefilmyet.●Ihavedonemyhomeworkalready.Ihaven’tdonem yhomeworkyet.●Motherhasjustcleanedthehouse.Motherhasn ’tcleanedthehouseyet.●Ihaveseenthefilmalready.LiuXi anghaswonagoldmedalintheOlympicGames.LiuXiangwentto Francelastweek.hasbecomeplayed一般过去时与现在完成时有一些明显的时间状语。遇到ye sterday,Lastyear,inMay,in+过去某一年,twodaysago,theotherday, justnow等就用一般过去时当有already,yet,just等常用现在完成时hasn’tworkedc amehavecookedcooked1.He______(go)toAmericatheyearbefor elast.2.--What_____you______(do)?--I_____(be)ateac her.3.Doyoulike_________(drink)milk?4.He_____________ _(nothave)hissupperyet.5.We________________(see)UncleLitomorrow.6.Joan’smotheroften_______atfour,nowshe_____________(cook)7.He_______________(read)abookwhentheaccident___________(happen).用所给动词的适当形式填空:wentdodoamdrinkinghasn’thadaregoingtoseecooksiscookingwasreadinghappened |
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