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1、英语时态之一般过去时讲解Ⅰ.Teachingaimsanddemands1.Reviewpastsimpletense2.Learnhowtodescribewhatsomeonedid3.ReviewtherulesofthepastformsoftheverbsⅡ.TeachingimportanceanddifficultiesTherulesofthepastformsoftheverbsⅢ.TeachingaidsSmallblackboardpapersⅣ.TeachingproceduresStep1R
2、eview1.Greeting2.PracticeeverydayEnglish:dopairworkGroup1:Theteachergivestheexampleandpracticeonebyonelikethis,A:WhatdidyoudolastSunday?B:I…Group2:Theteachergivestheexampleandpracticeonebyonelikethis,A:Whatdidshe/hedolastSunday?B:She/he…Step2Presentation一．一般过去时
3、的基本用法1．一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。1.yesterday或以其构成的短语：yesterdaymorning(afternoon,evening)等；2.由“last+一时间名词”构成的短语：lastnight,lastyear(winter,month,week)等；3.由“时间段+ago”构成的短语：amomentago,ashorttimeago,anhourago等；4.其它：justnow等5.由某些表示过去时态的从句等：whenIwastenyear
4、sold.如：hewaslateyesterday.Ididmyhomeworkthreehoursago.Icamehomejustnow.2.表示过去习惯性、经常性的动作.常与often,always等连用。如：Healwayscarriedabook.一．一般过去式的构成形式1．Be动词在一般过去时中的变化：⑴am和is在一般过去时中变为was。（wasnot=wasn't）⑵are在一般过去时中变为were。（werenot=weren't）⑶带有was或were的句子，其否定、疑问的变化和is,am,are
5、一样，即否定句在was或were后加not，一般疑问句把was或were调到句首。2．句中没有be动词的一般过去时的句子否定句：didn't+动词原形，如：Jimwenthomeyesterday.Jimdidn'tgohomeyesterday.一般疑问句：在句首加did，句子中的动词过去式变回原形。如：Jimwenthomeyesterday.DidJimgohomeyesterday?特殊疑问句：⑴疑问词+一般疑问句？如：Jimwenthomeyesterday.DidJimgohomeyesterday?Wh
6、atdidJimdoyesterday? 肯定式疑问式否定式疑问否定式IworkedDidIwork?IdidnotworkDidInotwork?He(she,it)workedDidhe(she,it)work?He(she,it)didnotworkDidhe(she,it)notwork?WeworkedDidwework?WedidnotworkDidwenotwork?YouworkedDidyouwork?YoudidnotworkDidyounotwork?TheyworkedDidtheywork?
7、TheydidnotworkDidtheynotwork? Step3Therulesofthepastformsoftheverbs三、规则动词的过去式1.一般情况下，在动词原形后面加-ed。look→looked play→played start→started visit→visited2.以不发音e结尾的动词，在词尾直接加-d。live→lived use→used3.以“辅音字母+ y”结尾的动词，先将 y 改为i ,再加 –ed。study→studied try→tried fly→flie
8、d4.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→stopped plan→planned prefer→preferred5.不规则动词的过去式需特殊记忆。如：am(is)-was, are-were（是）, go-went（走）, come-came（来）,
