八年级英语上册_unit 2 keeping healthy topic 1 you should brush your teeth twice a day section c一般过去时的知识点课件 （新版）仁爱版

UNIT2KeepingHealthyTOPIC1YoushouldbrushyourteethtwiceadaySectionC-一般过去时的知识点,一般过去时动词变过去式,past,now,future,动词过去式的构成,规则动词regularverbs,不规则动词irregularverbs,规则动词过去式的构成,1、一般在动词末尾加ed,lookWalkpaintplaycleanVisitWantcoughwatch,lookedWalkedpaintedplayedcleanedVisitedWantedcoughedwatched,2、结尾是e的动词只加-d,livehopeuse,livedhopedused,3.重读闭音节词，先双写这个辅音字母，再加ed,stoppat,stoppedpatted,4.以“辅音字母+y”结尾的词，先变“y”为“i”再加ed,studyWorryEarlyHappy,studyiedWorryiedEarlyiedHappyied,不规则动词过去式的构成,1.过去式与原形一样,letlet（让）,putput(放下）,cutcut（砍，剪）,readread（读）,2.把元音字母变成“a”,comecamegivegavebecomebecamedrinkdrankbeginbegan,剩余不规则动词,剩余不规则动词表,InfinitivePastTenseam,isaredogohavemakeget,InfinitivePastTenseeatsaysee,wasweredidwenthadmadegot,atesaidsaw,一般过去时肯定句变否定句,be动词类否定句实义动词类,1（be动词类）在表示过去存在的状态的句子中在was,were的后面加上not。,如：肯定句：Hewasintheparkthedaybeforeyesterday.否定句：Hewasnotintheparkthedaybeforeyesterday.肯定句：Wewerebusylastweek.否定句：Wewerenotbusylastweek.,2（行为动词类）要在行为动词的前面加助动词didnt.然后把动词过去式改为动词原形。即：didnt+动词原形,肯定句：Sheplayedtheviolinlastnight.否定句：Shedidntplaytheviolinlastnight.肯定句：Theyswaminthelakeyesterday.否定句：Theydidntswiminthelakeyesterday.,一般过去时否定句练习,肯定句:Theymadeakiteaweekago.否定句：Theydidntmakeakiteaweekago.肯定句：Hewasillyesterday.否定句：Hewasnotillyesterday.肯定句：Thecatateabirdlastnight.否定句：Thecatdidnteatabirdlastnight.,一般过去时的一般疑问句,1.把was,were放在句首,其余位置不变。,（1）HewasborninShanghai.WasheborninShanghai?(一般疑问句)Yes,hewas.(肯定回答)No,hewasnt.(否定回答),一般过去时表示过去某个时间发生的动作或存在的状态，常和表示过去的时间状语连用。yesterday（昨天）lastnight（昨天晚上）lastweek（上周）lastSunday（上周日）in1990justnow（刚才）longlongago（很久以前）,（2）TheywereinLiYanshomelastnight.Weret