Unit10SectionA4a4c課件人教版八年級英語下冊

||Unit10I’vehadthisbikeforthreeyears.一、概念1.表示過去發(fā)生的動作或已經(jīng)完成的動作對現(xiàn)在造成影響。2.表示過去發(fā)生的動作一直持續(xù)到現(xiàn)在，有可能繼續(xù)下去，也可以是現(xiàn)在已經(jīng)完成的動作。二、謂語部分的構(gòu)成謂語部分由“have/has+

動詞的過去分詞”構(gòu)成(第三人稱單數(shù)形式用

has

,其他人稱用

have

現(xiàn)在完成時句式結(jié)構(gòu)：肯定句：主語+have/has+過去分詞+其他成份。否定句：主語+have/has

not

+過去分詞+其他成份。一般疑問句：

Have/Has

+主語+過去分詞+其他成份?肯定回答：Yes,主語+have/has.否定回答：No,

主語+haven't/hasn't.evere

“曾經(jīng)”,放在動詞過去分詞前，助動詞have/has

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用于肯定句/疑問句already

“已經(jīng)”放在動詞的過去分詞前，助動詞have/has

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用于肯定句yet

“還沒”,放在句子末尾

用于否定句/疑問句時間標志never“從未，從沒”,放在動詞過去分詞前，助動詞have/has

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用于否定句用already(肯),yet(否-疑),ever,never填空練習：根據(jù)漢語提示用適當詞的合適形式填空1.Ihave

finished

my

homework.我已經(jīng)做完家庭作業(yè)了2.Haveyou

sungthisEnglishsong?你曾唱過這首英文歌嗎?3.Theyhaven'tstarted

他們還沒有動身。4.Maryhas

beentotheGreatWall.瑪麗從未去過長城。alvaadyever

yetnever1.I

have

been

to

Beijing

twice.(“去過”已經(jīng)回來)2.Tom

has

gone

to

America.He

will

return

next

week.(“去了”還未回來)3.JimhasbeeninJinanfor6years.

(Jim待在濟南6年了。)試比較：have/hasbeentoHave/has

gone

toHave/hasbeenin

(已經(jīng)回來)

還未回來)待在某地

居住在某地牛刀小試：用havebeento,havegoneto,havebeenin填空。(1)Tony______________Englandmanytimes.Hewantstogothereagain.(2)--WhereisLingling?Sheisnotherenow.--She______________thezoo.(3)They__________thereonbusiness.(4)He________________Tianjinfor10years.|hasbeen

tohas

gone

tohavebeenhasbeen

inT現(xiàn)在完成時表示動作或狀態(tài)從過去某一時刻開始、一直持續(xù)到現(xiàn)在，多與“since+時間點”或“for+時間段”連用。for表示“經(jīng)過(一段時間)”，而since表示“自從(…以來)”。常見結(jié)構(gòu)如下：現(xiàn)在完成時---since和for的用法來看幾個例句吧：He

has

lived

herefor

16

years.他住在這里有十六年了。He

haslived

here

since

16years

ago.他從十六年前起就住在這里了。一段時間+agosince

+表示過去的某一時間點從句for+表示一段時間的狀語Rewritethesentencesusingfor

or

since.JimisinJapan.Hearrivedtherethreedaysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhavenoteatenfortenhours.JimhasbeeninJapanforthreedays.3.Ihaveacamera.Iboughtitin2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.Ihavehadacamerasince2009.IhaveknownAnnaforthreeyears/sincethreeyearsago.LindahasbeenillsinceMonday.Fillintheblankswiththecorrectformsoftheverbsinbrackets.I_______________(neverbe)tothewaterparkbefore.Iwantto___________(go)nextmonthbeforetheweathergetstoocold.2.They_________________(neverown)anypets,butthey____________________(alwayswant)tohaveadog.haveneverbeengohaveneverownedhavealwayswanted3.We_____________(have)apianosincelastNovember.We____________(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4.CathyandAmy________________________(notbe)backtotheirhometownfortwoyears.They____________(miss)theirhometownalotandhopetovisittheplacenextyear.havehadboughthave

notbeen/haven’tbeenmiss5.Thismuseum_____________(be)hereforover20years.It_____________(be)oneoftheoldestbuildingsinthissmalltown.

hasbeenisFillinthequestionsandasktwostudents.Thencompletethechart.1.Doyouhavea(n)_______?Howlonghaveyouhadit?2.Doyouowna(n)_______?Howlonghaveyouownedit?StudentsThingsHowlongTonyfavoritebookfortwoyearsbasketballsincehewas10yearsoldStudent1Student2Summar本節(jié)課的主要內(nèi)容：have

been

to,have

gone

to,have

been

infor,since用法alreadyyetnevereverhave或has+動詞過去分詞概念構(gòu)成現(xiàn)在完成時時間標志標志詞真題鏈接()1.—Excuseme,whereis

Mr.Brown's

office?

—Sorry,Idon'tknow.I_

hereforonly2

days.A.workB.workedC.haveworked()2.My

grandmother

alotofchangesinTianjin

sinceshecamehere.A.sees

B.canseeC.hasseenCC()3.I

manynew

friends

since

I

camehere.A.makeB.madeC.havemade()4.Myauntisawriter.She

morethantenbookssince1980.A.writes

B.wroteC.has

written(

)5.—Lookatthese

stamps.I

themfor

five