牛津译林版英语八年级下册8BUnit1 Grammar课件现在完成时态

GrammarPresentperfecttenseUnit1PastandpresentGrammarUnit1Pas1Wehaverunatschoolforalongtime.Wehaverunatschoolforal21.Weusethepresentperfecttensetotalkaboutanactionthatstartedinthepastandcontinuestothepresent.(从过去持续到现在的动作或状态）IhavelivedheresinceIwasborn.Mydaughterhasstudieddanceforfouryears.

1.Weusethepresentperfectt32.Weusethepresentperfecttensetotalkaboutanactionthathappenedinthepastandhasaconnectionwiththepresent.(过去的动作对现在有影响）EddiehasjusteatenHobo’sfood.(Eddieatethefood,andnowHoboisnothappy.)Shehasgone.(sheisn’there.)

2.Weusethepresentperfectt43.Wealsousethepresentperfecttensetotalkabouthowmanytimesanactionhashappenedtillnow（uptonow).直到现在Ihavealreadyreadthisbookmanytimes.

3.Wealsousethepresentperf5subjecthave/has+(not)pastparticipleI/You/We/Theyhave(not)moved.He/She/Ithas(not)moved.thepresentperfecttensehave/has+Vpphave/hasnot+Vpphave/has此时没有任何意思,只是一种句型结构subjecthave/has+(not)past61.Ihavealreadyfinishedmyhomework.

否疑2.Hehasseenthedolphinshowmanytimes.

否疑Ihaven’tfinishedmyhomeworkyet.Haveyoufinishedyourhomeworkyet?Hehasn’tseenthedolphinshowmanytimes.

Hasheseenthedolphinshowmanytimes?Yes,hehas./No,hehasn’t.Yes,Ihave./No,Ihaven’t.already(肯定句)yet(否定、疑问句)1.Ihavealreadyfinishedmy7thepastparticipleofverbs1)Weadd‘-ed’toregularverbs.Mostverbs+edvisit→visitedVerbsendingin

e+dlive→livedVerbsendingin

aconsonant+yy→i+edcarry→carriedShortverbsendingin

avowel+aconsonantdoubletheconsonant+edstop→stoppedthepastparticipleofverbs1)8thepastparticipleofirregularverbs.

动词原形 动词过去式 动词过去分词ABB bringbrought broughtABC do did doneAAA let let letABA come camecomeAAB beat beat beatenthepastparticipleofirregul9Game1:fororsince1.Wehavelivedhere_______1990.2.Howlonghaveyoustudiedhere?___5years.3.Theboyhashadabadcold_____lastnight.4.Mr.Huanghaskeptthebooks______aweekago.5.Ihavetaughtintheschool_____Icamehere.6.Wehavebeenfriends____alongtime.sinceForsincesincesinceforGame1:fororsince1.Wehave10for+“一段时间”；since+“时间点”

+“一段时间ago”；+“一般过去时的从句”。Remember:for+“一段时间”；Remember:11Eddiewasbornfouryearsago.HealwaysliveswithMillie.Eddie__________withMilliesince____________.Eddie__________withMilliefor_______.Fouryears_________sinceEddie_______.It________fouryears_____Eddie_______.haslivedhewasbornhaslived4yearshaspassedwasbornhasbeensincewasborn4yearsago____fouryears______Eddie__________.It’ssincewas

bornEddiewasbornfouryearsago.12_______Since_______1.IhavetaughtEnglishfor8years.IhavetaughtEnglishsince8yearsago.Ithasbeen/is8yearssinceItaughtEnglish.Eightyears

haspassedsinceItaughtEnglish.I

taught

English8yearsago.现在完成时一般过去时_______Since_______1.Ihave13Game2:changethesentences1.Theboyhasalreadygonehome.（改为一般疑问句）___________________2.Thegirlhasjustgivenittome.（改为否定句）___________________________3.Theyhaveevervisitedtheislandbefore.（改为否定句）——————————————————————Hastheboygonehomeyet?Thegirlhasn’tgivenittomeyet.Theyhavenevervisitedtheislandbefore.Game2:changethesentences1.14Remember:1、（现在完成时）肯定句变为否定句的基本方法：２、（现在完成时）肯定句变为一般疑问句的基本方法：１、句中有ever直接将ever变为never２、若无ever，在助动词have／has之后加not将助动词have／has提前到句首alreadyyetalready/justyetRemember:1、（现在完成时）肯定句变为否定句的基本方15already

已经,一般用于肯定的陈述句,句中或句末never

从未,一般用于肯定的陈述句,放在句中,表否定的含义ever

曾经,一般用于疑问句Have+主语+ever+过去分词yet

还,仍然,一般用于否定句和疑问句,用于句末just刚刚,一般用于肯定的陈述句,放在句中（注意与justnow的区别）recently

近来,用于句末before

以前,用于句末

Remember:already已经,一般用于肯定的陈述句,句中或句末Rem16Haveyoudoneyourhomework______?Ihave______________beentoChengdu.(去过Hehas_________washedthedishes.Hehasworkedthere_______heleftschool.Haveyoucleanedyourroom_______?ShehasknownSam_______nineyears.Haveyou______riddenahorse?Theyhave_______________arrived.Wehavenotcompletedtheproject_______.Ihave_____beentoLondon_______.Game3:completethesesentencesyetever/neveralready/justsinceyetforeverjust/alreadyyetneverbeforeHaveyoudoneyourhomework__17Canyoudothese?I____just_______readingthebook.(finish)____youever____toMoscow?(be)I________herefortwoweeksalready.(be)Lucy___never______toaforeignerbefore.(speak)I________totheSummerPalacetwice.(be)We__________yourschoolbefore.(visit)He___________hishistorybookyet.(find)___havefinishedHavebeenhavebeenhasspokenhavebeenhavevisitedhasn’tfound_________________________Canyoudothese?I____just_181)

He___________(wait)foranhour.2)

I________________(notfinish)theworkyet.3)

________you_______(know)himsincethen?4)

I___________(hear)frommybrotherrecently.5)

We___________(be)theremanytimesinthepast3years.6)Howlong_____you__________(stay)athomealready?7)

He___________(notread)thebookbefore.8)

Hersister_________(go)toChangchun.She_____(leave)thismorning.9)

He___________(live)inhishometownsincehelefthere.10)Thewriter__________(finish)severalstory-bookssince1990.FinalPKhaswaitedhaven’tfinishedHaveknownhaveheardhavebeenhavestayedhasn’treadhasgonelefthaslivedhasfinished1)

He___________(wait)fora19ShehasmovedtoBeijingsinceshegotmarried.ShehasmovedtoBeijingfortwoyears.

HowlonghasshemovedBeijing?ShehasmovedtoBeijingsince20

Findsomeonewho…1.hastraveledtoBeijing2.haskeptasnakeasapet3.hasbeentoNewYork4.haswatchedHarryPorter5.haslistenedtoJayChou6.haswrittenapoemKnowyourfriendswell!Findsomeonewho…Knowyourfr21GrammarPresentperfecttenseUnit1PastandpresentGrammarUnit1Pas22Wehaverunatschoolforalongtime.Wehaverunatschoolforal231.Weusethepresentperfecttensetotalkaboutanactionthatstartedinthepastandcontinuestothepresent.(从过去持续到现在的动作或状态）IhavelivedheresinceIwasborn.Mydaughterhasstudieddanceforfouryears.

1.Weusethepresentperfectt242.Weusethepresentperfecttensetotalkaboutanactionthathappenedinthepastandhasaconnectionwiththepresent.(过去的动作对现在有影响）EddiehasjusteatenHobo’sfood.(Eddieatethefood,andnowHoboisnothappy.)Shehasgone.(sheisn’there.)

2.Weusethepresentperfectt253.Wealsousethepresentperfecttensetotalkabouthowmanytimesanactionhashappenedtillnow（uptonow).直到现在Ihavealreadyreadthisbookmanytimes.

3.Wealsousethepresentperf26subjecthave/has+(not)pastparticipleI/You/We/Theyhave(not)moved.He/She/Ithas(not)moved.thepresentperfecttensehave/has+Vpphave/hasnot+Vpphave/has此时没有任何意思,只是一种句型结构subjecthave/has+(not)past271.Ihavealreadyfinishedmyhomework.

否疑2.Hehasseenthedolphinshowmanytimes.

否疑Ihaven’tfinishedmyhomeworkyet.Haveyoufinishedyourhomeworkyet?Hehasn’tseenthedolphinshowmanytimes.

Hasheseenthedolphinshowmanytimes?Yes,hehas./No,hehasn’t.Yes,Ihave./No,Ihaven’t.already(肯定句)yet(否定、疑问句)1.Ihavealreadyfinishedmy28thepastparticipleofverbs1)Weadd‘-ed’toregularverbs.Mostverbs+edvisit→visitedVerbsendingin

e+dlive→livedVerbsendingin

aconsonant+yy→i+edcarry→carriedShortverbsendingin

avowel+aconsonantdoubletheconsonant+edstop→stoppedthepastparticipleofverbs1)29thepastparticipleofirregularverbs.

动词原形 动词过去式 动词过去分词ABB bringbrought broughtABC do did doneAAA let let letABA come camecomeAAB beat beat beatenthepastparticipleofirregul30Game1:fororsince1.Wehavelivedhere_______1990.2.Howlonghaveyoustudiedhere?___5years.3.Theboyhashadabadcold_____lastnight.4.Mr.Huanghaskeptthebooks______aweekago.5.Ihavetaughtintheschool_____Icamehere.6.Wehavebeenfriends____alongtime.sinceForsincesincesinceforGame1:fororsince1.Wehave31for+“一段时间”；since+“时间点”

+“一段时间ago”；+“一般过去时的从句”。Remember:for+“一段时间”；Remember:32Eddiewasbornfouryearsago.HealwaysliveswithMillie.Eddie__________withMilliesince____________.Eddie__________withMilliefor_______.Fouryears_________sinceEddie_______.It________fouryears_____Eddie_______.haslivedhewasbornhaslived4yearshaspassedwasbornhasbeensincewasborn4yearsago____fouryears______Eddie__________.It’ssincewas

bornEddiewasbornfouryearsago.33_______Since_______1.IhavetaughtEnglishfor8years.IhavetaughtEnglishsince8yearsago.Ithasbeen/is8yearssinceItaughtEnglish.Eightyears

haspassedsinceItaughtEnglish.I

taught

English8yearsago.现在完成时一般过去时_______Since_______1.Ihave34Game2:changethesentences1.Theboyhasalreadygonehome.（改为一般疑问句）___________________2.Thegirlhasjustgivenittome.（改为否定句）___________________________3.Theyhaveevervisitedtheislandbefore.（改为否定句）——————————————————————Hastheboygonehomeyet?Thegirlhasn’tgivenittomeyet.Theyhavenevervisitedtheislandbefore.Game2:changethesentences1.35Remember:1、（现在完成时）肯定句变为否定句的基本方法：２、（现在完成时）肯定句变为一般疑问句的基本方法：１、句中有ever直接将ever变为never２、若无ever，在助动词have／has之后加not将助动词have／has提前到句首alreadyyetalready/justyetRemember:1、（现在完成时）肯定句变为否定句的基本方36already

已经,一般用于肯定的陈述句,句中或句末never

从未,一般用于肯定的陈述句,放在句中,表否定的含义ever

曾经,一般用于疑问句Have+主语+ever+过去分词yet

还,仍然,一般用于否定句和疑问句,用于句末just刚刚,一般用于肯定的陈述句,放在句中（注意与justnow的区别）recently

近来,用于句末before

以前,用于句末

Remember:already已经,一般用于肯定的陈述句,句中或句末Rem37Haveyoudoneyourhomework______?Ihave______________beentoChengdu.(去过Hehas_________washedthedishes.Hehasworkedthere_______heleftschool.Haveyoucleanedyourroom_______?ShehasknownSam_______nineyears.Haveyou______riddenahorse?Theyhave_______________arrived.Wehavenotcompletedtheproject_______.Ihave_____beentoLondon_______.Game3:completethesesentencesyetever/neveralready/justsinceyetforeverjust/alreadyyetneverbeforeHaveyoudoneyourhomework__38Canyoudothese?I____just_______readingthebook.(finish)____youever____toMoscow?(be)I________herefortwoweeksalready.(be)Lucy___never______toaforeignerbefore.(speak)I________totheSummerPalacetwice.(be)We__________yourschoolbefore.(visit)He___________hishistory