人教版八年级英语下册Unit-10-第三课时课件

SectionA(Grammarfocus-4c)Unit10I'vehadthisbikeforthreeyears.SectionA(Grammarfocus-4c)现在完成时：

表示过去发生或已经完成的某一动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作或保存的状态。结构：主语+have/has+动词的过去分词一般疑问句：have/has…?Yes,Ihave.No,Ihaven’t.Yes,shehas.No,shehasn’t.Revision现在完成时：结构：主语+have/has+动词的1.现在完成时动词构成have/has+v过去分词助动词否定haven’thasn’t疑问Haveyou…?Hashe…?常与下列时间状语连用：just,already,yet,ever,never,before,severaltimes1.现在完成时动词构成助动词否定haven’t疑问Have现在完成时的用法1.过去发生的动作对现在造成的影响或结果。和already，never,ever,just,before,yet等状语连用。2.过去已经开始，持续到现在的动作或状态，常与for或since引起的一段时间状语连用。Ihavejusthadmybreakfast.(现在我不饿)Ihavelivedhereforthreeyears.Ihavelivedheresince2004/threeyearsago.现在完成时的用法1.过去发生的动作对现在造成的影响或结果。和

(1).for+表示一段时间的短语

(2).since+表示过去时间点的词语

(3).since+表示过去时间的时间状语从句eg.Ihavebeenateacher______ayear.Hehasbeenatthisschool_______1992.Wehavelearned1,000Englishwords_______wecametothisschool.forsincesince现在完成时句中常见的时间状语A.表示从过去一直持续到现在,不能是具体的过去时间。(1).for+表示一段时间的短语eg.Ihaveeverjustalreadyyete.g.Haveyou_____beentoJapan?Ihave_____finishedmyhomework.Ihavefinishedmyhomework______.

Ihaven’tfinishedmyhomework____.B.just,already,yet,before/ever,never有此类副词时,常强调动作完成,不强调动作的持续.everjustalreadyyete.g.Haveyo人教版八年级英语下册Unit-10-第三课时课件Howlonghaveyouhadthatbikeoverthere?I'vehaditforthreeyears.Howlonghashissonownedthetrainandrailwayset? He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven'tplayedforawhilenow.GrammarFocusHowlonghaveyouhadthatbik现在完成时的持续型用法现在完成时还可表示过去某一时间开始并一直持续到现在(包括“现在”在内)的动作或状态，该用法中的动词多是延续性动词，常见的时态标志词有since,for等。现在完成时现在完成时的持续型用法现在完成时since,for的用法:since:自…...以来1)since+时间点He

has

stayed

here

since

5

o’clock.2)since+时间段+agoHe

has

stayed

here

since

5

hours

ago.3)since+从句(句子要用一般过去时态）She

has

taught

English

since

he

came

here.

for:(长达）for+时间段Hehaskeptthebookfor2weeks.since,for的用法:since:自…...以来since＋一段时间＋ago＝for＋时间段;sincetwoweeksago=fortwoweeks;Ihavekeptthelibrarybookforaweek.=Ihavekeptthelibrarybooksincea

weekago.在现在完成时态中，for与since引导的时间状语可以相互转换。since＋一段时间＋ago＝for＋时间段;IhaveItis+时间段+since+一般过去时的句子.1.他的爷爷已经去世2年了。2.Nick参军三年了。3.他离开深圳好长时间了。4.这本书我已借了4个月了。

Itis2yearssincehisgrandpadied.

Itis3yearssinceNickjoinedthearmy.ItisalongtimesinceheleftShenzhen.

Itis4monthssinceIborrowedthebook.

Itis+时间段+since+一般过去时的句子.1短暂性(短语)动词与延续性(短语)动词和与表示状态的短语之间的转化1.

有些短暂性(短语)动词可转化为相应的延续性(短语)动词。常见的有：

become

→

be

borrow

→

keep

buy

→

have/own

catchacold

→

haveacoldcome

→

stay

puton

→

weargotosleep

→

sleep

moveto

→

livein短暂性(短语)动词与延续性(短语)动词2.

有些短暂性(短语)动词可转化为表示状态的短语。常见的有：

leave

→

beaway

begin/start

→

beondie

→

bedead

finish

→

beoverjoin

→

bein/beamemberoffallasleep

→

beasleep

marry

→

bemarried

come/arrivehere

→

behere2.

有些短暂性(短语)动词可转化为表示状态的短语。常见的有

巧记瞬间性动词的转换：

开始离去借来还，出生入死买到家，穿衣入睡要感冒，开开关关变结束。1beginbeon6

returnbeback2leavebeawayfrom7

joinbein3

gobeoff8

diebedead4

borrowkeep9

buyhave5

comebehere10

arrivebehere巧记瞬间性动词的转换：1beginbeon6retu10reachbehere11putonwear12fallasleepbeasleep13catchacoldhaveacold14openbeopen15closebeclosed16becomebe17end/finishbeover10reachbehere11putonwear124aRewritethesentencesusingfororsince.JimisinJapan.Hearrivedtherethreedaysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhavebeenhungryfortenhours/sincetenhoursago.JimhasbeeninJapanforthreeyears.4aRewritethesentencesusing3.Ihaveacamera.Iboughtitin2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.Ihavehadacamerasince2009.IhaveknownAnnforthreeyears/sincethreeyearsago.LindahasbeenillsinceMonday.3.Ihaveacamera.Iboughti4bFillintheblankswiththecorrectformsoftheverbsinbrackets.

1.I_______________(neverbe)tothewaterparkbefore.Iwantto_____(go)nextmonthbeforetheweathergetstoocold.2.They_________________(neverown)anypets,butthey__________________(alwayswant)tohaveadog.haveneverbeengohaveneverownedhavealwayswanted4bFillintheblankswiththe3.We__________(have)apianosincelastNovember.We______(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4.CathyandAmy_______________________(notbe)backtotheirhometownfortwoyears.They_____(miss)theirhometownalotandhopetovisittheplacenextyear.5.Thismuseum_________(be)hereforover20years.It______(be)oneoftheoldestbuildingsinthissmalltown.havehadboughthavenotbeen/haven’tbeenmisshasbeenis3.We__________(have)apian4cFillinthequestionsandasktwostudents.Thencompletethechart.1.Doyouhavea(n)_______?Howlonghaveyouhadit?2.Doyouowna(n)_______?Howlonghaveyouownedit?4cFillinthequestionsandasThingsHowlongTonyfavoritebookfortwoyearsbasketballsincehewas10yearsoldStudent1Student2ThingsHowlongTonyfavoriteboo练习题:

It'salongtimesincewe____(meet)last,isn’tit?

2.--Iknowyou___________(choose)apicturebookamongthese.

--Yes,Havealookatit,please.

3.Sofar,spaceshipswithoutpeople___________(reach)themoonandsomeotherpartsoftheuniverse.

4.Myfather____homefornearlythreeweeks.

A.hasgoneawayfrom

B.hasleft

C.hasbeenawayfrom

D.wentaway

5.Mr.andMrs.Greenhave_____inChinaforaweek.

A.been

B.got

C.arrived

D.reachedmethavechosenhavereachedCAExercises练习题:

methavechosenhavereache1.Tolearntheusageofforandsince.2.TousetheGrammarFocussentencestocreatesimpleconversation.3.Toreviewthepresentperfecttense.4.Tolearnnewwords.Summary1.Tolearntheusageoffora1.ReviewGrammar.2.Finishtheexercisesintheworkbook.1.ReviewGrammar.SectionA(Grammarfocus-4c)Unit10I'vehadthisbikeforthreeyears.SectionA(Grammarfocus-4c)现在完成时：

表示过去发生或已经完成的某一动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作或保存的状态。结构：主语+have/has+动词的过去分词一般疑问句：have/has…?Yes,Ihave.No,Ihaven’t.Yes,shehas.No,shehasn’t.Revision现在完成时：结构：主语+have/has+动词的1.现在完成时动词构成have/has+v过去分词助动词否定haven’thasn’t疑问Haveyou…?Hashe…?常与下列时间状语连用：just,already,yet,ever,never,before,severaltimes1.现在完成时动词构成助动词否定haven’t疑问Have现在完成时的用法1.过去发生的动作对现在造成的影响或结果。和already，never,ever,just,before,yet等状语连用。2.过去已经开始，持续到现在的动作或状态，常与for或since引起的一段时间状语连用。Ihavejusthadmybreakfast.(现在我不饿)Ihavelivedhereforthreeyears.Ihavelivedheresince2004/threeyearsago.现在完成时的用法1.过去发生的动作对现在造成的影响或结果。和

(1).for+表示一段时间的短语

(2).since+表示过去时间点的词语

(3).since+表示过去时间的时间状语从句eg.Ihavebeenateacher______ayear.Hehasbeenatthisschool_______1992.Wehavelearned1,000Englishwords_______wecametothisschool.forsincesince现在完成时句中常见的时间状语A.表示从过去一直持续到现在,不能是具体的过去时间。(1).for+表示一段时间的短语eg.Ihaveeverjustalreadyyete.g.Haveyou_____beentoJapan?Ihave_____finishedmyhomework.Ihavefinishedmyhomework______.

Ihaven’tfinishedmyhomework____.B.just,already,yet,before/ever,never有此类副词时,常强调动作完成,不强调动作的持续.everjustalreadyyete.g.Haveyo人教版八年级英语下册Unit-10-第三课时课件Howlonghaveyouhadthatbikeoverthere?I'vehaditforthreeyears.Howlonghashissonownedthetrainandrailwayset? He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven'tplayedforawhilenow.GrammarFocusHowlonghaveyouhadthatbik现在完成时的持续型用法现在完成时还可表示过去某一时间开始并一直持续到现在(包括“现在”在内)的动作或状态，该用法中的动词多是延续性动词，常见的时态标志词有since,for等。现在完成时现在完成时的持续型用法现在完成时since,for的用法:since:自…...以来1)since+时间点He

has

stayed

here

since

5

o’clock.2)since+时间段+agoHe

has

stayed

here

since

5

hours

ago.3)since+从句(句子要用一般过去时态）She

has

taught

English

since

he

came

here.

for:(长达）for+时间段Hehaskeptthebookfor2weeks.since,for的用法:since:自…...以来since＋一段时间＋ago＝for＋时间段;sincetwoweeksago=fortwoweeks;Ihavekeptthelibrarybookforaweek.=Ihavekeptthelibrarybooksincea

weekago.在现在完成时态中，for与since引导的时间状语可以相互转换。since＋一段时间＋ago＝for＋时间段;IhaveItis+时间段+since+一般过去时的句子.1.他的爷爷已经去世2年了。2.Nick参军三年了。3.他离开深圳好长时间了。4.这本书我已借了4个月了。

Itis2yearssincehisgrandpadied.

Itis3yearssinceNickjoinedthearmy.ItisalongtimesinceheleftShenzhen.

Itis4monthssinceIborrowedthebook.

Itis+时间段+since+一般过去时的句子.1短暂性(短语)动词与延续性(短语)动词和与表示状态的短语之间的转化1.

有些短暂性(短语)动词可转化为相应的延续性(短语)动词。常见的有：

become

→

be

borrow

→

keep

buy

→

have/own

catchacold

→

haveacoldcome

→

stay

puton

→

weargotosleep

→

sleep

moveto

→

livein短暂性(短语)动词与延续性(短语)动词2.

有些短暂性(短语)动词可转化为表示状态的短语。常见的有：

leave

→

beaway

begin/start

→

beondie

→

bedead

finish

→

beoverjoin

→

bein/beamemberoffallasleep

→

beasleep

marry

→

bemarried

come/arrivehere

→

behere2.

有些短暂性(短语)动词可转化为表示状态的短语。常见的有

巧记瞬间性动词的转换：

开始离去借来还，出生入死买到家，穿衣入睡要感冒，开开关关变结束。1beginbeon6

returnbeback2leavebeawayfrom7

joinbein3

gobeoff8

diebedead4

borrowkeep9

buyhave5

comebehere10

arrivebehere巧记瞬间性动词的转换：1beginbeon6retu10reachbehere11putonwear12fallasleepbeasleep13catchacoldhaveacold14openbeopen15closebeclosed16becomebe17end/finishbeover10reachbehere11putonwear124aRewritethesentencesusingfororsince.JimisinJapan.Hearrivedtherethreedaysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhavebeenhungryfortenhours/sincetenhoursago.JimhasbeeninJapanforthreeyears.4aRewritethesentencesusing3.Ihaveacamera.Iboughtitin2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.Ihavehadacamerasince2009.IhaveknownAnnforthreeyears/sincethreeyearsago.LindahasbeenillsinceMonday.3.Ihaveacamera.Iboughti4bFillintheblankswiththecorrectformsoftheverbsinbrackets.

1.I_______________(neverbe)tothewaterparkbefore.Iwantto_____(go)nextmonthbeforetheweathergetstoocold.2.They_________________(neverown)anypets,butthey__________________(alwayswant)tohaveadog.haveneverbeengohaveneverownedhavealwayswanted4bFillintheblankswiththe3.We__________(have)apianosincelastNovember.We______(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4.CathyandAmy_______________________(notbe)backtotheirhometownfortwoyears.They_____(miss)theirhometownalotandhopetovisittheplacenextyear.5.Thismuseum_________(be)hereforover20years.It______(be)oneoftheoldestbuildingsinthissmalltown.havehadboughthavenotbeen/haven’tbe