现在完成时课件(4).ppt

Thepresentperfecttense,现在完成时,1.过去某一时间点发生的动作对现在产生影响。,功能：,2.过去某一时间点发生的动作持续到现在或还将持续下去。,Thepresentperfecttense,助动词（可以帮助构成肯定、疑问和否定句）,1.Hehascleanedhisroom.(写一个一般疑问句）,Hashecleanedhisroom?,2.ShehaslivedinLondonforfouryears.(划线部分提问）,HowlonghasshelivedinLondon?,3.HehasbeentoChina,_?（写出反义疑问句部分）,hasnthe,4.Theyhavecomebackfromwork.(写否定句）,Theyhaventcomebackfromwork.,WhatarethekeywordsforthePresentPerfectTense?,A:_yourbrother_hishomeworkyet?(finish)B:Yes,hesalreadydoneit.,Keywords,Hasfinished,yet,already,注意：already用于肯定句，yet用于疑问句和否定句中,A:_youever_tothepark?(be)B:No,never.,Keywords,Havebeen,yet,already,ever,never,注意：ever曾经用于疑问句中never从不带有否定意义,I_just_thedesk,youcantakeittoyourclassroom.(mend),Keywords,havemended,yet,ever,never,just,already,Just刚刚与现在完成时连用一般置句中Justnow刚才与一般过去时连用,Tom_inthefactorysinceheleftschooltenyearsago.(work),Keywords,hasworked,yet,ever,never,since,already,since后面带过去时间或有一般过去时的句子,A:Howlong_you_inthisschool?(teach)B:For6years.,Keywords,havetaught,yet,ever,never,since,for,already,+一段时间,We_only_100treessofar.(plant),Keywords,haveplanted,yet,ever,never,since,for,just,already,sofar,到目前为止,Keywords,yet,ever,never,since,for,just,before,already,sofar,inthepast10years,twice,也可以是其他表示次数的词,howlong,Someverbscantoftenbeusedwithfororsince,Pleasepointoutanymistakesandcorrect,Shehasboughtthecomputerfortwoyears.,had,Pleasepointoutanymistakesandcorrect,HowlonghaveyoucometotheUnitedStates？,beenin,Pleasepointoutanymistakesandcorrect,AnnhasgonetoChinasincethreemonthsago.,beenin,Pleasepointoutanymistakesandcorrect,Mybrotherhasjoinedthearmyforfiveyears.,beenin,beenasoldier,Pleasepointoutanymistakesandcorrect,IhaveleftShanghaifor3days.,beenawayfor3days.,Pleasepointoutanymistakesandcorrect,Ihaveborrowedthedictionarysince3daysago.,kept,Pleasepointoutanymistakesandcorrect,Thefilmhasbegunfor10minutes.,beenon,Pleasepointoutanymistakesandcorrect,Theconcerthasfinishedforhalfanhour.,beenover,Pleasepointoutanymistakesandcorrect,Hisdoghasdiedfortwoyears.,beendead,canyoudistinguish?,去过某地已经回来常与ever,never,once,twice,连用,一直留在某地与for/since连用用howlong提问,去了某地还没回来不与只用于第三人称,Hersister_Australia,Sheleftthismorning.,hasgoneto,canyoudistinguish?,去过常与ever,never,once,twice,连用,在与时间段连用用howlong提问,去了说话时某人不在只用于第三人称,A:WhereisBob?B:He_Japanwithhissister.,hasgoneto,canyoudistinguish?,去过常与ever,never,once,twice,连用,在与时间段连用用howlong提问,去了说话时某人不在只用于第三人称,A:Howlong_you_China?B:I_herefor3years.,havebeen,havebeenin,canyoudistinguish?,去过常与ever,never,once,twice,连用,在与时间段连用用howlong提问,去了说话时某人不在只用于第三人称,A:_youever_thecity?B:No,never.,Havebeento,Thepasttenseorthepresentperfecttense,know,haveknown,knew,Thepasttenseorthepresentperfectte