完成時態的用法1）現在完成時態表示過去發生的動作對現在造成的影響或結果。

Ourteacherhasleft.Wehavestudied

English.Ihavealreadyfinishedthehomework.Hehashadhislunch.Hehasbecomeadoctor.Have/has+過去分詞1.構成2.意義2）某個動作從過去已經開始，一直持續到現在,還有可能持續到將來，動作的持續性要通過一段時間來表示。一段時間的表達方法有兩種:For:

+一段時間

forayearfortwoweeksforthreeyearsSince

：過去的某一時刻,

sinceninesince

lastweek

一般過去時態的時間狀語從句,sinceyoucame.

sinceyougothome.

!:for和since所引導的時間狀語都表示一段時間.對劃線部分提問都用Howlong.1）Hehasbeenawaysincelastweek.2）Hehasbeenawayforoneweek.對下列劃線部分進行提問。練一練：1.WehavelearntEnglish_____3years.______3yearsago.HowlonghaveyoulearntEnglish?for+一段時間

since+過去的時間點就畫線提問用howlong瞬間性動詞不能和表示一段時間的時間狀語連用,但是他可以轉換成相應的延續性動詞.1.直接用延續性動詞

buy–catch(get)acold–borrow—Come/go/become—puton—2.轉換成be+名詞

jointhearmy–JointheParty–gotoschool–Havehaveacoldkeep

bewearbeasoldierbeaPartymemberbeastudent3.轉換成be+形容詞或副詞

die—finish–begin—

leave—beawayfallsleep–beasleepclose–beclosed4.轉換成be+介詞短語

gotoschool–

beinschool

jointhearmy–beinthearmybedeadbeoverbeon1.我們買這本書三年了.Wehavehadthebookforthreeyears.2.他感冒三天了.

Hehashadacoldforthreedays.Weboughtthebookthreeyearsago.

Hecaughtacoldthreedaysago.一般過去時態和現在完成時態可以構成同意句3.自從上星期我借的這本書Ihavekeptthebooksincelastweek.4.我成為一個學生兩年多了.Ihavebeenastudentforovertwoyears.Iborrowedthebooklastweek.Ibecameastudenttwoyearsago.5.MrBlack死了三年了。MrBlackhasbeendeadforthreeyears.MrBlackdiedthreeyearsago.6.小名參軍半年了。XiaoMinghasbeenasoldierforhalfayear.XiaoMingjoinedthearmyhalfayearago.7.我們上了8年學了。Wehavebeenstudentsforeightyears.8.下課10分鐘了。Theclasshasbeenoverfortenminutes.9.電影開始了一小時了。

Thefilmhasbeenonforanhour.注：含延續性動詞的現在完成時的同義句轉換。Shebegantoworktenyearsago.Shehasworkedsincetenyearsago.Itistenyearssinceshebegantowork.Tenyearshaspassed

sinceshebegantowork.

Shehasworkedfortenyears.1.這輛自行車我買了兩年了。

I’ve_____thebike___twoyears.2.HeleftNanjingtwoyearsago.He____________________Nanjingfortwoyears.3.Themonkeydiedlastmonth.Themonkey_______________foramonth.4.A:Honglong_____you____()B:Twoweeks.

A.did,getillB.have,fallenillC.were,illD.have,beenillHadforhasbeenawayfromhasbeendeadDExercises1.You’veneverseensuchawonderfulfilmbefore,_____?Ahaven’tyouBhaveyouCdoyouDdon’tyou2.--AnnhasgonetoShanghai.---So____herparents.AhasBdoCdidDhave3.–Ihavewatchedthegame.--When____you____it?AhavewatchedBdowatchCdidwatch

Dwill

watchB

D

C4.Mr.Green____inChinasincefiveyearsago.AlivedBhaslivedClivesDisgoingtolive5.Hisgrandma______fortwoyears.AdiedBhasbeendeadCwasdeadDhasdied6.–WhereisHanMeinow?

---She____toShanghai.Shewillbebackintwodays.AhasgoneBhasbeenCgoesDhadgone7.---_____totheUnitedStates?

---No,never,butIwenttoCanadaafewyearsago.8.Youhaven’tchangedyourmind,_______?

AdoyouBareyouChaveyouDdidyouBBADCAhas…beenBhas…goneChave…bennDhave…gone9.

Howlonghaveyou_____thefootballteamoftheschool?AbeenonBbeenatCjoinedDplayed10.---Wherehaveyou_____thesedays?----Ihave_____toDazhuwithmyfriends.Abeen,goneBbeen,been

Cgone,beenDgone,gone11.Howlonghaveyou____thisbook?A

bought

B

borrowedChadDlent12.

–Excuseme,____youseent