最全最详细现在完成时讲解初中八年级

Unit9YoyoNO.41MiddleSchool现在完成时has/havedone定义现在完成时态结构标志词例题present(now)futurepast现在完成时(presentperfecttense)用法一、从过去开始的某一动作持续到现在，还有可能继续持续下去。（常以for、since+时间为标志）时间轴timelinehave/has+done动词过去分词规则动词的变化v+ed不规则动词的变化do-did-done现在完成时的结构规则动词的原形、过去式、过去分词4、stop______________plan______________3、study______________carry______________2、live____________arrive______________1、talk____________finish______________talkedtalkedfinishedfinished(1)直接+“ed”livedlivedarrivedarrived(2)直接+“d”studiedstudiedcarriedcarried(3)变“y”为i+“ed”stoppedstoppedplannedplanned(4)双写+“ed”不规则动词的原形、过去式及过去分词1do-________-_______2catch-________--________3tell-________--_________4stand-______--______5get-_______--________6hurt-________--_________7put-_______--_________8come-_______--________9run-________--_________10begin-________--_________11swim-_________--________12draw-_________--_________13know-________--__________14do-_______--________15go-_______--_________16give-_______--_______17see-_______--________18drive-_______--________19take-______--_______20be-________--________21eat-_____--______22write-_______--______23speak-______--________24steal-_______--________25tear撕开-_______--________diddonecaughtcaughttoldtoldstoodstoodgotgothurthurtputputcamecomeranrunbeganbegunswamswumdrewdrawnknewknowndiddonewentgonegavegivensawseendrovedriventooktakenwas,werebeenateeatenwrotewrittenspokespokenstolestolentoretornPleaserememberthem.不规则动词的过去式以及过去分词•teach—taught—taughtABB巧记规律•become—became—becomeABA•put–put–putlet—let–letAAA•eat—ate—eatenABCAAA•cost-cost-costread-read-read•put-put-putcut-cut-cut•let-let-letset-set-set设置•hit-hit-hit击打hurt-hurt-hurt规律：结尾字母一般是t或d。特殊：read-read-read[ri:d]-[red]-[red]。run-ran-runcome-came-comebecome-became-becomeovercome-overcame-overcome克服ABA规律：中间元音字母的变化ABB(含规则动词)sit-sat-satwin-won-wonshine-shone-shonehold-held-heldfind-found-foundhang-hung-hungoversleep-overslept-overslept睡过头规律：改变单词中间元音字母ABCtake-took-takengive-gave-givenfall-fell-falleneat-ate-eatenwrite-wrote-writtenspeak-spoke-spokenfreeze-froze-frozen结冰ride-rode-riddenget-got-gottenforget-forgot-forgotten规律：有的在原形词尾加n或en，变成以en结尾的单词。特殊：am/is-was-beenare-were-been,do(does)-did-donego-went-gonesee-saw-seenshow-showed-shown(showed)lie-lay躺(lied撒谎)-lain(lied)51015202530354045505560ABBbuild-built-builtbring-brought-broughtfind-found-foundhave-had-hadlose-lost-lostteach-taught-taughtmeet-met-metABCam/is-was-beenare-were-beeneat-ate-eatendo-did-donego-went-gonesee-saw-seenknow-knew-knownAAAread-read-read[ri:d]-[red]-[red]ABBbuild-______-____bring-______-______find-______-______have-______-______lose-______-______teach-______-______meet-______-______ABCam/is-______-______are-______-______eat-______-______do(does)-______-______go-______-______see-______-______know-______-______AAAread-______-______[ri:d]-[red]-[red]51015202530354045505560ABBbuild-built-builtbring-brought-broughtfind-found-foundhave-had-hadlose-lost-lostteach-taught-taughtmeet-met-metABCam/is-was-beenare-were-beeneat-ate-eatendo(does)-did-donego-went-gonesee-saw-seenknow-knew-knownAAAread-read-read[ri:d]-[red]-[red]ABBlose-______-______teach-______-______find-______-______bring-______-______meet-______-______have-______-______build-______-____ABCknow-______-______see-______-______go-______-______do-______-______eat-______-______are-______-______am/is-______-______AAAread-______-______[ri:d]-[red]-[red]写出下列动词的过去式及过去分词1read_______-______2bring_______-______3find_______-______4have_______-______5lose______-_______6teach_______-______7meet________-_____8am/is______-______9are_____-______10eat_____-______11do______-_____12go______-______13see_____-______14know_____-_____readreadbroughtbroughtfoundfoundhadhadlostlosttaughttaughtmetmetwasbeenwerebeenateeatendiddonewentgonesawseenknewknownfor“经历(段时间)”since“自从…以来”for＋段时间since＋点时间since＋段时间＋ago=for+时间段since＋从句，过去时1.Wehavestayedherefor2hours.since2hoursago.since10o’clock.2.WehavelearnedEnglishsincehecamehere.现在完成时的标志词Ihavetaughtfor13years.=Ihavetaughtsince2003.用for和since填空。______threehours______threeo’clock______twodays______yesterday______Icamehere______lastSunday_______aweek_______alongtime_______1997______twoweeks____threeyearsago_______lastmonthforsinceforsincesincesinceforforsinceforsincesincefor＋段时间since＋点时间since＋段时间＋ago=for+时间段since＋从句，过去时翻译下列句子：1、我已经学了5年的英语。2、我已经在新疆住了14年。3、我已经认识我的好朋友2年了.（用since造句）IhavelivedinXinjiangfor14years.Ihaveknownmybestfriendsince2yearsago.IhavelearnedEnglishfor5years.since5yearsagosince2011.present(now)futurepastMum,Ihavealready(已经)cleanedthem.John,cleanyourteethplease.2、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。（常以already,yet为标志。）.现在完成时用法二：Haveyouwatchedthismovie?Yes,Ihavealreadywatchedit.(已经看过了)No,Ihaven’twatchedityet.（还没看过）HaveyoureadLittleWomen《小妇人》?Yes,Ihavealreadyreadit.No,Ihaven’treadityet.cleanyourroom(cleaned)finishyourhomework(finished)Haveyou…?Yes,…./No,…..teachhimEnglish(taught)loseyourkey(lost)talkedonthephoneforanhourplaysoccerHashe/she…?Yes,…has./No,…hasn’tplayedfootballeat(eaten)potatochipssee(seen)atiger现在完成时构成用法常用状语1.have+done动词过去分词2.has+done1.从过去一直到现在，还有可能持