中考专项复习——现在完成时复习课件.ppt

已学习过的时态 1.v原形 2.v+s/es（单三） 试一试： 1.A: Do you want a pen ? B: No, I don’t . I _____ already _____ (buy) one . 2. _____ you ever ______(be) to Paris? 3.A:Where is your mother ? B: She ________ (go) shopping today. 4. I _____________ ( not finish) the homework yet. 5.Li Lei _____ just _____ (give) the cakes to Polly.. 6. There ________(be) great changes in Rugao these years. 7.My father ________ (go) to Beijing . He isn’t at home . 8 I _____never______ (be) to London ? * 现在完成时复习 Review of the Present Perfect Tense Welcome 时态 不同时间发生的动作，动词要用不同形式 动动词形式 时间 名称 was/were+v-ing 过去某一时间，在进行 过去进行时 1.v-ed（规则动词） 2.不规则动词 过去（与现在无关） 一般过去时 1.will/shall+v原形 2.am/is/are going to +v原形 即将，计划 一般将来时 am/is/are+v-ing 正在进行 现在进行时 1.v原形 2.v+s/es（三单现） 平时，经常 一般现在时 am/is/are + v-ing 1.will/shall+v原形 2.am/is/are going to +v原形 1.v-ed（规则动词） 2.不规则动词 was/were+ v-ing 判断下列句子的时态 1.She works in a factory. 2.I was doing my homework at this time yesterday. 3.We are going to have a picnic this Sunday. 4.They held a sports meeting last week. 5.Are you helping your mother . 现在完成时表示到目前为止已经完成，并对现在留下某种后果和影响的动作。 现在完成时的构成： have/has + 动词的过去分词 注：动词过去分词的构成分为规则变化和不规则变化， 规则变化的动词过去分词与过去式是一样的，不 规则变化的动词须特殊记忆。 规则动词过去分词的构成 1. 一般在动词后直接加-ed 构成规则 2. 以不发音的e结尾的动词， 直接加-d 3.末尾只有一个辅音字母的 重读闭音节词，先双写这 个辅音字母，再加-ed 4.结尾是“辅音字母+y”的动词， 先变“y”为“i”再加-ed 例词 look looked play played live lived hope hoped stop stopped plan planned study studied carry carried 写出下列动词的过去分词： work like cry stay learn use help finish cook arrive worked liked cried stayed learned used helped finished cooked arrived 不规则动词过去分词的构成 1. 三个主要动词 is, am be are was were been have/has had had do/does did done 2. AAA型 （三者一致） cut cut cut let let let put put put cost cost cost read