一般过去时-现在完成时-过去完成时.ppt

pastperfecttense过去完成时

〔Simplepasttense一般过去时〕1.Hehasheardthesongbefore.〔Presentperfecttense现在完成时〕3.Hesaidhehadheardthesongtwoyearsbefore.〔Pastperfecttense过去完成时〕2.Heheardittwoyearsago.

Simplepasttense一般过去时

表示在过去某个时候发生的动作或存在的状态.Iwenttoschoolbybikethismorning.Iwasatschoolyesterdayafternoon.一般过去时结构:am,is,are---was,wereV-ed用法：

threedaysagoYesterdayLast…amomentago=justnowinthepastin1997when+过去时句子一般过去时时间状语：

Fillintheblankswiththerightformoftheverbs:I_____(be)illlastSunday.Amy_____(sit)hereyesterday.____you______(clean)yourroomjustnow.Mysister_____(be)bornonJune5.1996._____(be)yourparentsathomejustnow?He_______(study)Frenchherelastyear.She_____(do)homeworklastnight.They_____(go)tothezooyesterdaymorning.We_____(have)apartylastSaturday.Joy______(visit)meyesterdayevening.They______(live)heretwoyearsago.He_____(be)hereamomentago.wassatDidcleanwasWerestudieddidwenthadvisitedlivedwas

Presentperfecttense现在完成时

present(now)futurepast现在完成时(presentperfecttense)1.Ihavealreadyfinishedmyhomework.2.Ihaveneverseenhimbefore.3.He___________(lose)hiskey,andhecan’tgetintohishousenow.haslost

过去分词的构成：1.规那么动词的变化：a)一般情况下在动词后面加edwork------workedplay--------playedb)以e结尾的动词直接加duse------usedrefuse------refusedc)以辅音字母加y结尾的动词，把y改i再加edstudy-----studiedcarry-----carriedd)以重读闭音节结尾的，前面有单个元音字母时，双写辅音字母，再加edstop----stoppeddrop-------dropped2.不规那么动词的变化见课本99--100页过去完成时的构成：由助动词had+动词的过去分词〔V.pp)

现在完成时用法1：already,yet,just,ever,never,before表示过去发生的某一动作对现在造成的影响或结果．时间状语：

两“去”have/hasbeento…have/hasgoneto…去过某地去了某地have/hasbeenin…来/去/到/在某地他来中国两年了．HehasbeeninChinafortwoyears.

have/hasbeen(to)…去过某地我以前从未去过那儿．他们去过英国两次了你曾经去过美国吗？－你去那里了？－我去老师办公室了Ihaveneverbeentherebefore.IhavebeentoEnglandtwice.HaveyoueverbeentotheUSA?---Wherehave