写出下列动词的过去分词形式.wake______2.teach______3.sell________4.see________5.ride_______6.pay_____7.choose______8.throw_____9.think_______10.eat_____11.drive______12.catch______13.bring______14.break______15.give_______16.get_________17.know_______18.open_______19.write_______20.forget________1.进行庭院售卖2.不再……3.决定做某事4.察看；观察5.棋类游戏6.一个面包机7.收拾，整理；8带回9.至于；关于10.说实在的11.软体玩具12.放弃某些玩具1cPracticetheconversation.Thenmakeconversationsaboutotherthingsinthepictureabove.StudentAisAmy’smom.StudentBisAmy.Makeconversation.(2c)语法课堂现在完成时大显身手现在完成时的构成现在完成时的基本句型：现在完成时的时间状语现在完成时的主要用法现在完成时的主要用法不规则动词原型-过去式-过去分词形式：写出下列动词的过去分词形式.wake______2.teach______3.sell________4.see________5.ride_______6.pay_____7.choose______8.throw_____9.think_______10.eat_____11.drive______12.catch______13.bring______14.break______15.give_______16.get_________17.know_______18.open_______19.write_______20.forget________现在完成时标志词2.since+注1):since也可单独使用,表示“自那时起”;另外since前也可加上ever,以加强语气.Eg.Ihavebeenhere(ever)since.Ihavebeenhere(ever)sinceIgraduatedin2000.注2):对since或for引导的时间状语提问用howlong,.※短暂性动词与延续动词间的转换短暂性动词与时间段的关系leave--come/go(to)--arrive(at/in)--get(to)--reach--buy--borrow--finish--翻译练习：1.我买了这块手表五年了。2.这位老人已经死了十年了。3.他已经回来三天了。4.自从六点钟他就来这儿了。5.我离开家乡已十年了。与一般过去时的用法比较eg：HehasboughtanEnglish-Chinesedictionary.他已经买了一本英汉字典。HeboughtanEnglish-Chinesedictionary.他曾买过一本英汉字典。三．常与一般过去时连用的典型的表示过去时间的状语:上一页动词填空：1._____you________(clean)theroom?Yes,we__________(do)thatalready.When_______you______(do)it?We_______(do)itanhourago.2.______he______(see)thisfilmyet?Yes.When_____he_____(see)it?He______itlastweek.3.Howmanytimes_____you______(be)there?4.I__________(read)thenoveltwice.It’sinteresting.5.She_________(go)toPairs,hasn’tshe?Yes.How______she_______(go)there?She_______(go)therebyair.6.Sofar,manycountries_______________(develop)theirsoftwareprograms.7.MrChen______(give)upsmokinglastyear.8.MrChen__________(give)upsmokingsincelastyear.选用