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第三单元复习动词原形过去式washcleanedcleanplayedplayvisitedvisitwashedwatchedwatch动词原形过去式learnrowedrowcookedcooklearnedclimbedclimb一般在动词末尾+ed动词原形过去式stoppedstop末尾只有一个元音和一个辅音的重读闭音节，双写末尾辅音字母+ed动词原形过去式studiedstudy以辅音字母+y结尾的词，变y为i+edcarriedcarry动词原形过去式danceddance以e结尾的词,直接+dtastedtaste不规则动词过去式goreadreadsangsingsawseewentdiddogetgotateeat动词过去式变化规则1、一般情况下直接在动词后面+ed如：watch-watchedplay-played2、词尾是e的单词直接+d如：dance-danced3、以元音+辅音字母结尾的词，双写末尾辅音+ed如：stop-stopped4、以辅音字母+y结尾的词，变y为i+ed如：study-studied5、特殊动词的变化形式要特别记住如：do-dideat-ate等练习1.read2.swim3.go4.take5.sing6.eat7.buy8.dance9.do10.seereadswamwenttooksangateboughtdanceddidsaw短语•goswimming---•gotoapark----•gofishing-----•gohiking-----wentswimmingwenttoaparkwentfishingwenthiking给出下列词的过去式rowaboattakepicturesbuypresentseatgoodfoodplayfootballsinganddancerowedaboattookpicturesboughtpresentsategoodfoodplayedfootballsanganddanced一般过去式•一般过去时：用来描述过去某个时间发生的动作或存在的状态。•过去时间：yesterday,lastweek,lastweekend,lastyear,lastSunday,ago等。如:Igotupatsixyesterday.1含有be动词的一般过去时⑴am和is在一般过去时中变为was。⑵are在一般过去时中变为were。WuYifanwasbusylastweekend.2含有行为动词的一般过去式主语+动词过去式+其他如：IwatchedTVyesterday.一般过去时否定句1、句中带有was或were的句子，（wasnot=wasn’t）（werenot=weren’t）Shewasn’tbusylastweek.2、句中为行为动词的句子要用didn’t+动词原形不管主语是什么都用。Ididn’twatchTVyesterday.一般过去时一般疑问句1、句中带有was或were的句子把was或were提到句首。WasWuYifanbusylastweek?2、句中为行为动词的在句首加did，句子中的动词过去式变回原形。如：DidJimgohomeyesterday?一般过去时特殊疑问句特殊疑问句：疑问词+did+主语+动词原形？如：WhatdidJimdoyesterday?练习Iwenttoparklastweekend.否定句：一般疑问句：特殊疑问句：Ididn’tgotoparklastweekend.Didyougotoparklastweekend?Whatdidyoudolastweekend?练习•TomandMary(come)toChinalastmonth.•There(be)noonehereamomentago.•Tom(begin)tolearnChineselastyear.•She(notwatch)TVlastnight.camewasdidn’twatchbegan练习•isarego•doreadplay•watchamclean•writestoplive•studyhavewin•hasfly习题•1.Itwasexciting.•否定句：•一般疑问句：•肯、否定回答：Itwasn’texciting.Wasitexciting?Yes,itwas./No,itwasn’t.习题•1Nancywenttoschoolearly.•否定句：•一般疑问句：•肯、否定回答：Nancydidn’tgotoschoolearly.DidNancygotoschoolearly?Yes,shedid./No,shedidn’t.