湖南省衡南县第九中学高一英语《Unit1 Tales of the unexplained Grammar and usage 1》课件 牛津版必修2.ppt

unit1 grammarandusage presentperfecttense现在完成时 presentperfectcontinuoustense现在完成进行时 parta presentperfecttense form have has done presentperfecttense theboyisveryhappy theboy catch abird connectionwiththepast theboycaughtabird connectionwiththepresent theboyishappy presentperfecttense theboyisveryhappy theboy catch abird hascaught connectionwiththepast theboycaughtabird connectionwiththepresent theboyishappy presentperfecttense look thewindowisopen ericopenedthewindowjustnow eric alreadyopen thewindow connectionwiththepast ericopenedthewindow hasalready opened connectionwiththepresent thewindowisopen summary weusethepresentperfecttensetotalkaboutthingsthathappenedintherecentpast butareconnectedtothepresent presentperfecttense daniel live inbeijingsincehecametochina haslived connectionwiththepast danielcametochina connectionwiththepresent danielislivinginchina summary past now future came haslived weusethepresentperfecttensetotalkaboutsomethingthatstartedinthepast andisstillhappeningnow presentperfecttense theboysaretired they justplay aballgame havejustplayed connectionwiththepresent theboysaretired connectionwiththepast theboysplayedaballgame summary weusethepresentperfecttensetotalkaboutactionsthatwerecompletedonlyashorttimeago presentperfecttense iwenttoegyptin1986 i be toegypttwice iwenttoegyptin2004 havebeen summary wecanalsousethepresentperfecttenseforrepeatedactions presentperfecttense itever snow inhongkong has snowed no it never snow there has snowed summary weusethepresentperfecttensewhentheexacttimeofanactionisnotclearorimportant weuseitwithtimeexpressionssuchas already ever for just lately never recently since yet notes 1 weusealreadyforaffirmativestatementsandyetfornegativestatementsandinterrogativesentences 2 weusefor aperiodoftimeandsince apointoftime notes 3 structuresconnectedwiththepresentperfecttense itis hasbeen aperiodoftime since clause this that it isthefirst second time that clause presentperfecttense this that it istheonly that clause presentperfecttense this that it isthebest finest mostinteresting that clause exercise myfriendjackhasjustsentmeane mail tellingmeabouthistravelsaroundtheworld he justbe toqomolangmabasecampand see ayetithere heisstillveryexcitedaboutit he visit thegreatpyramidinegypttoo hesaysthathe love egyptbuthe notvisit allthepyramidsyet hasjustbeen saw hasvisited loves hasn tvisited exercise he swim inlochness butluckilyhe nevermeet thelochnessmonster he dive intheindianoceanmanytimeslookingfortreasure althoughhe find manysunkenships he notfind anytreasure 11 he be tothegreatwallbefore i mnotsure butihave hasswum hasnevermet hasdived hasfound hasn tfound has been partb presentperfectcontinuoustense form have has been doing theboystartedhavingdinnerfiveminutesago heisstillhavingdinnernow theboy have dinnersincefiveminutesago hasbeenhaving presentperfectcontinuoustense themanstartedworkinginthefieldhalfanhourago heisstillworkingnow theman work inthefieldforhalfanhour hasbeenworking presentperfectcontinuoustense summary past present ireturnedhome i mstillnotsleepingwell notbeingabletosleepwell ihavenotbeensleepingwellsinceireturnedhome 1 weusethepresentperfectcontinuoustensetotalkaboutactionsthatstartedinthepastandarestillcontinuing summary wealsousethepresentperfectcontinuoustensetotalkaboutactionsthathavejustfinishedbutarestillconnectedtothepresentinsomeway summary past present mavisstartedwaitingforkelly onehourago kellyarrives kelly sorryi mlate haveyoubeenwaitinglong mavis yes i vebeenwaitingforanhour 1 weusethepresentperfecttensetotalkaboutanactioncompletedintherecentpast andthepresentperfectcontinuoustenseforanactionthatstartedinthepastandisstillhappening comparison comparison past past now future past ppt havedone past past now future past ppct havebeendoing comparison lijia read abookaboutstonehenge shefinishedreadingthebook hasread lijia read abookaboutstonehenge sheisstillreadingthebook hasbeenreading 2 wecanusethepresentperfecttenseforrepeatedactions andthepresentperfectcontinuoustensefornon stopactions comparison comparison i egyptmanytimes repeatedactions havevisited theman skate thismorning non stopaction hasbeenskating 3 weusuallyusethepresentperfecttensetoaskquestionsbeginningwithhowmanyorhowmuch andthepresentperfectcontinuoustensetoaskquestionsbeginningwithhowlong comparison comparison howlonghaveyoubeenswimminginthelake howmanytimeshaveyouswuminthelake 4 wecanuseeitherastateverboranactionverbwiththepresentperfecttense weusuallycanonlyuseanactionverbwiththepresentperfectcontinuoustense comparison shehashadthepenfor2years comparison stateverb shehaswrittenmanycompositionswiththispen actionverb shehasbeenwritingcompositionswiththispen actionverb comparison ihavenevervisitedamerica ihavealreadybeentoamerica ihaveneverbeenvisitingamerica 5 weusethepresentperfecttense notthepresentperfectcontinuoustense withthewordslikenever yet alreadyandever exercise 1 althoughhehaslivedwithusforyears he usmuchimpression a hadn tleftb didn tleavec doesn tleaved hasn tleft exercise 1 althoughhehaslivedwithusforyears he usmuchimpression a hadn tleftb didn tleavec doesn tleaved hasn tleft exercise 2 howcanyoupossiblymissthenews it ontvalldaylong a hasbeenb hadbeenc wasd willbe exercise 2 howcanyoupossiblymissthenews it ontvalldaylong a hasbeenb hadbeenc wasd willbe exercise 3 davidandvicky married a howlongwere beingb howlong havec howlonghave beend howlongdid get exercise 3 davidandvicky married a howlongwere beingb howlong havec howlonghave beend howlongdid get exercise 4 theoldcouplehavebeenmarriedfor40yearsandneveronce witheachother a theyhadquarreledb theyhavequarreledc havetheyquarreledd hadtheyquarreled exercis