一般过去式的归纳.doc

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: milkmilked, watchwatched, visitvisited, pullpulled ,waterwatered2. 以不发音的e结尾的在词尾加-d。如：tastetasted, livelived, useused, movemoved 3. 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：stopstopped, planplanned 4. 以辅音字母加y结尾的动词，先把y变成i，再加-ed。如：studystudied, carrycarried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：putput, letlet 2. 以d结尾的词，把d变成t。如：buildbuilt, spendspent 3. 以n结尾的词，在词后加t。如：learnlearnt 4. 以ow / aw结尾的词，把ow / aw变成ew。如：blowblew, drawdrew, knowknew, growgrew 5. 含有双写字母的词，将双写改为单写，在词尾加t。如：keepkept, sleepslept, feelfelt 6. 含有元音字母o / i的词，将o / i变成a。如：singsang, givegave, sitsat, drinkdrank 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, stopped 2. 在浊辅音和元音后读作d。如：enjoyed, studied, moved, called 3. 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.-She ate three apples yesterday2.表示过去经常或过去反复发生的动作-(也可与often,always等频度的时间状语连用)-He always got up very early when he was young.谓语形式:(1)did(动词的过去式)She was a student two years ago.They were students two years agoShe ate three apples yesterdayI did my homework promptly(2)was(were)+done(过去时的被动语态)The picture was painted two years ago句子结构:(1)肯定句: 主语be动词(was，were)其他-She was a student two years ago否定句: 主语be not(was not, were not)其他-She was not a student two years ago疑问句: Be动词(Was/Were)主语其他-Was she a student two years ago?(2)肯定句: 主语动词的过去式其他-She ate three apples yesterday.否定句: 主语did not动词原型其他-She did not eat three apples yesterday疑问句: Did主语动词原型其他-Did she eat three apples yesterday?注意:wasnt 是 was not 的缩写.werent 是 were not 的缩写.didnt 是did not 的缩写.常用的时间状语:yesterday昨天,two days ago,three days ago(两年前,三年前)等等.long ago很久以前last + week(year, night, month)上一周,去年,昨晚,上个月等等.in 1989,in 2008等等.a moment ago 刚才,just now 刚才.when he was young 当他年轻的时候