资源描述:
《一般过去式的归纳.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、一般过去式规则动词的过去式由“动词原形+-ed”构成,具体变化有:1.直接在词尾加-ed。如:milk—milked,watch—watched,visit—visited,pull—pulled,water—watered2.以不发音的e结尾的在词尾加-d。如:taste—tasted,live—lived,use—used,move—moved3.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—stopped,plan—planned4.以辅音字母加y结尾的动词,先把y变成i,再加-ed。如:study—
2、studied,carry—carried不规则动词的过去式见课本后的不规则动词表。大体上归纳有以下六条记忆法:1.以t结尾的词,过去式与原形相同。如:put—put,let—let2.以d结尾的词,把d变成t。如:build—built,spend—spent3.以n结尾的词,在词后加t。如:learn—learnt4.以ow/aw结尾的词,把ow/aw变成ew。如:blow—blew,draw—drew,know—knew,grow—grew5.含有双写字母的词,将双写改为单写,在词尾加t。如:keep—kept,sleep—slept,feel—fel
3、t6.含有元音字母o/i的词,将o/i变成a。如:sing—sang,give—gave,sit—sat,drink—drank规则动词词尾加-ed有三种读音:1.在清辅音后读作[t]。如:asked,helped,watched,stopped2.在浊辅音和元音后读作[d]。如:enjoyed,studied,moved,called3.在t/d后读作[id]。如:wanted,needed一般过去时定义1.表示过去某个时间发生的动作或存在的状态.---Sheatethreeapplesyesterday2.表示过去经常或过去反复发生的动作--(也可与of
4、ten,always等频度的时间状语连用)---Healwaysgotupveryearlywhenhewasyoung.谓语形式:(1)did(动词的过去式)Shewasastudenttwoyearsago.TheywerestudentstwoyearsagoSheatethreeapplesyesterdayIdidmyhomeworkpromptly(2)was(were)+done(过去时的被动语态)Thepicturewaspaintedtwoyearsago句子结构:(1)肯定句:主语+be动词(was,were)+其他---Shewasas
5、tudenttwoyearsago否定句:主语+benot(wasnot,werenot)+其他---Shewasnotastudenttwoyearsago疑问句:Be动词(Was/Were)+主语+其他---Wassheastudenttwoyearsago?(2)肯定句:主语+动词的过去式+其他---Sheatethreeapplesyesterday.否定句:主语+didnot+动词原型+其他---Shedidnoteatthreeapplesyesterday疑问句:Did+主语+动词原型+其他---Didsheeatthreeapplesyest
6、erday?注意:wasn't是wasnot的缩写.weren't是werenot的缩写.didn't是didnot的缩写.常用的时间状语:yesterday昨天,twodaysago,threedaysago(两年前,三年前)等等.longago很久以前last+week(year,night,month…)上一周,去年,昨晚,上个月等等.in1989,in2008等等.amomentago刚才,justnow刚才.whenhewasyoung当他年轻的时候