1、 过去分词的规则变化过去分词的规则变化 1.一般在动词原形末尾加-ed look looked start started 2.结尾是e的动词加-d live lived hope hoped 3.末尾只有一个辅音字母的重读 stop stopped 闭音节词，先双写末尾辅音字母，plan planned 再加-ed 4.结尾是“辅音字母+y”结尾的动词，study studied 先变“y”为“i”再加-ed carry carried构成规则构成规则例词例词怎么用怎么用1、表示从过去某一时间开始一直持续到现在并还可能继续持续下去的动作或状态。常用的时间状语有since+过去时间点，for+
2、时间段，in/during the last/past。E.g.:I have studied English for ten years.2、表示过去发生的或已经发生的动作对现在造成了影响或结果。常用的时间状语有just,already,yet,before,so far等。E.g.:So far it rained the whole night,and the road is very wet outside.重难点突破重难点突破重难点突破重难点突破have(has)gone to意为“去了某地”。E.g.:Hello,could I speak to Mr.Wang?Sorry,he
3、isnt here.He has gone to Shanghai.重难点突破重难点突破since与for的区别since意为“自从”，后接时间点或一般过去式的句子。for后常接时间段，意为“经过，花费”注:(1)两者可以转换,并且二者引出的时间状语都用how long提问；E.g.:How long has he had this book?He has had this book for a week.=He has had this book since a week ago.重难点突破重难点突破（2）二者均须与延续性动词连用。E.g.:My sister has kept my boo
4、k for two weeks(since two weeks ago).我的妹妹借我的书已经两周了。重难点突破重难点突破延续性动词与终结性动词延续性动词表示该动词是一种延续的动作，这种动词可以延续下去或产生持久的影响。终结性动词表示该动词是一种不能延续的动作，这种动作一发生便结束。重难点突破重难点突破常见的终止性动词与延续性动词的转换arrive at(in)/get to/reach be income/go back,return be backcome/go out be outbecome beclose be closed open be openborrow keep buy have重难点突破重难点突破put on wearcatch/get a cold have a colddie be dead leave be away fromfall asleep be asleepFinish/end be over
