江苏省常州市西夏墅中学高中英语 Unit1 Tales of the unexplained Grammar and usage 1课件 牛津译林版必修2.ppt

grammarandusage unit 1 presentperfecttensepresentperfectcontinuoustense unit1 课件描述 本课件总结了现在完成时和现在完成进行时的用法 并设计了一些练习题帮助学生巩固对这两种时态的掌握 presentperfecttense step1lead ingooverthenewsstoryonpage2andfindthesentencesusingthepresentperfecttense pleaseexplainwhythetenseisusedinthesesentences thedisappearanceofjustin make kellyveryunhappy hasmade 1 weusethepresentperfecttensetotalkaboutthingsthathappenedintherecentpast butareconnectedtothepresent step2points1 6 i notsee justinsincelastfridaynight havenotseen 2 wealsousethepresentperfecttensetotalkaboutsomethingthatstartedinthepast andisstillhappeningnow 3 weusethepresentperfecttensewhentheexacttimeofanactionisnotclearorimportant weuseitwithtimeexpressionssuchas alreadyeverforjustlatelyneverrecentlysinceyet exercise completethefollowingsentenceswiththepropertense 1 we study englishforaboutfiveyears 2 they live inthesouthsincetheirdaughterwasborn 3 i read yourarticlethreetimes it swellwritten 4 thestudent finish herhomeworkalready 5 eric just go backtohishometown havestudied havelived haveread havefinished hasgone weusealreadyforaffirmativestatementsandyetfornegativestatements weusefor aperiodoftimeandsince apointintime 4 weusethepresentperfecttensetotalkaboutactionsthatwerecompletedonlyashorttimeago thepolicehavejustfinishedsearchingtheareas 5 wecanalsousethepresentperfecttenseforrepeatedactions thatis weusethepresentperfecttensewiththetimeexpressionsonce twice threetimes 6 form have has thepastparticipleoftheverb step3readthediaryentryandthencompleteitusingthecorrectformsoftheverbsinbrackets answers 2 saw 3 hasvisited 4 loves 5 hasn tvisited 6 hasswum 7 hasnevermet 8 hasdived 9 hasfound 10 hasn tfound 11 has been presentperfectcontinuoustense 1 form have hasbeen thepresentparticipleoftheverb 2 weusethepresentperfectcontinuoustensetotalkaboutactionsthatstartedinthepastandarestillcontinuing ihavenotbeensleepingwellsinceireturnedhome past present notbeingabletosleepwell ireturnedhome i mstillnotsleepingwell 3 wealsousethepresentperfectcontinuoustensetotalkaboutactionsthathavejustfinishedbutarestillconnectedtothepresentinsomeway kelly sorryi mlate haveyoubeenwaitinglong mavis yes i vebeenwaitingforanhour past onehouragopresent mavisstartedwaitingforkelly kellyarrives havebeenobserving havebeentalking havebeentaking haveseen havebeenwriting 1990 present cropcirclesaresointeresting 1990 present cropcirclesaresointeresti