13Unit1（原卷版）-2021-2022學(xué)年八年級(jí)英語下冊(cè)鏈接教材精準(zhǔn)變式練（牛津譯林版）

重點(diǎn)語法Unit1（原卷版）20212022學(xué)年八年級(jí)英語下冊(cè)鏈接教材精準(zhǔn)變式練（牛津譯林版）教材重點(diǎn)語法教材重點(diǎn)語法知識(shí)鏈接及典例解讀現(xiàn)在完成時(shí)的用法教材原句AmazingchangeshavetakenplaceinSunshineTown.陽光鎮(zhèn)發(fā)生了巨大的變化。語法精講一、現(xiàn)在完成時(shí)的含義1.表示過去已完成的動(dòng)作對(duì)現(xiàn)在產(chǎn)生的影響，常與“already”、“yet”、“just”等連用；e.g.Hehasalreadyhadbreakfast.(現(xiàn)在飽了)2.也可表示過去發(fā)生的動(dòng)作持續(xù)到現(xiàn)在，常與“since”自從、“for”等連用。e.g.IhavelivedheresinceIwasborn.3.表示一個(gè)過去的動(dòng)作直到現(xiàn)在發(fā)生的次數(shù)。e.g.Ihavealreadyreadthisbookthreetimes.二、現(xiàn)在完成時(shí)的構(gòu)成1)現(xiàn)在完成時(shí)的肯定句句型主語（第一、二人稱單/復(fù)數(shù)）+have+過去分詞主語（第三人稱復(fù)數(shù)）+have+過去分詞

主語（第三人稱單數(shù)）+has+過去分詞have(has)為助動(dòng)詞e.g.Hehasalreadyhadhislunch.e.g.Ihavejustfinishedmyhomework.2)現(xiàn)在完成時(shí)的否定句句型主語+have/hasnot(haven't/hasn't)+過去分詞e.g.Ihavenotseenthemovieyet.e.g.Shehasn’teatenit.3)現(xiàn)在完成時(shí)的一般疑問句Have/Has+主語+過去分詞+…？e.g.Haveyoufinishedthework?e.g.Hasshearrivedhere?e.g.Havetheyeatensupper?三、過去分詞的構(gòu)成A.規(guī)則動(dòng)詞的過去分詞（參照動(dòng)詞的過去式變化規(guī)則）B.不規(guī)則動(dòng)詞的過去分詞四、現(xiàn)在完成時(shí)的標(biāo)志時(shí)間副詞和時(shí)間短語:1)副詞already和yet。already一般用于肯定句中，yet一般用于否定句和疑問句中。e.g.Wehavealreadyfinishedourhomework.2)副詞ever和never。多用于否定或疑問句中，表示“曾經(jīng)”或“從未“等。

e.g.HaveyoueverbeentotheGreatWall?你曾經(jīng)去過長城嗎?3)用just表示到說話時(shí)為止的時(shí)間狀語,e.g.Ihavejustseenher,butIdon’tknowwheresheisnow.注意：當(dāng)在肯定陳述句中含有already或just時(shí)，在轉(zhuǎn)換成否定句或疑問句時(shí)，要把句中的already或just去掉，在句末加上yet.e.g.Ihavedonemyhomeworkalready.Ihaven’tdonemyhomeworkyet.典例解讀1.Hehasnever_______apenbefore.A.loseB.toloseC.lostD.losing答案C解析本題主要考查現(xiàn)在完成時(shí)態(tài)對(duì)謂語動(dòng)詞的要求?，F(xiàn)在完成時(shí)態(tài)謂語動(dòng)詞的結(jié)構(gòu)是have(has)+過去分詞。本題空白處需要過去分詞，這樣A、B、D都不對(duì)。2.Ihaveneverseenthefilm______.A.agoB.justnowC.beforeD.later答案C解析動(dòng)詞時(shí)態(tài)為現(xiàn)在完成時(shí)，與之搭配的詞必須是Ever,never,already,yet,before,recently等詞。而ago,justnow等只能用于一般過去時(shí)句子中，用later意思不通3.Greatchanges______inDaqingsincethe1990s.Atookplace B.weretakenplaceC.havetakenplace D.havebeentakenplace【答案】C【解析】考查動(dòng)詞的時(shí)態(tài)和語態(tài)?！皊ince+一段時(shí)間”常與現(xiàn)在完成時(shí)連用，且表示“發(fā)生”的動(dòng)詞短語takeplace無被動(dòng)語態(tài)。故選C。4.MissBrown,we______cleaningourclassroom.Canwegohomenow?A.finishB.finishingC.arefinishedD.havefinished【答案】D【解析】句意：布朗夫人，我們已經(jīng)打掃完了教室，我們現(xiàn)在可以回家了嗎？finish完成；finishing現(xiàn)在分詞形式；arefinished被完成，被動(dòng)語態(tài)形式；havefinished現(xiàn)在完成時(shí)，已經(jīng)完成。根據(jù)句意可知，我們已經(jīng)打掃完了，強(qiáng)調(diào)動(dòng)作已經(jīng)完成。故應(yīng)選D。一、單選題1．—Look!Howcleantheclassroomis!—Yes.I'msuresomeone__________itup.A．cleans B．iscleaning C．willclean D．hascleaned2．Greatchanges__________inmyhometownsinceliberation.A．havebeentakenplace B．tookplaceC．havetakenplace D．weretakenplace3．—Whywon'tyougotoseethedolphinshowwithme?—BecauseIit.A．saw B．willsee C．see D．haveseen4．WiththehelpofourEnglishteacher,Tony___________alot.He'sgoodatEnglishnow.A．changed B．haschanged C．ischanging D．changes5．—_______you_______yourhomework?—Yes,Ihave.I_______itonlyanhourago.A．Did;finish;did B．Have;finished;didC．Are;finishing;did D．Have;finished;havedone6．Thepaperfactoryhascausedalotofseriousairpollutioninmyhometown___________.A．lastyear B．onceamonthC．infiveyears D．overthepastfiveyears7．Iamsurprisedatthenewlookofmyhometown,forit________alotovertheyears.A．changed B．changes C．willchange D．haschanged8．Nicetoseeyouagain.I________youforalongtime.A．hadn'tseen B．haven'tseen C．didn'tsee D．don'tsee9．Thecountrylife______greatlysince1992.A．change B．haschanged C．changing D．havechanged10．StudentsinBeijing____________awaymanybookstotheHopeSchoolssince2009．A．havegiven B．give C．gave D．giving11．—______you______himaroundthemuseumyet?—Yes.Wehadagreattimethere.A．Have;shown B．Do;show C．Had;shown D．Did;show12．Danny______hardforlongtorealizehisdreamandnowheispopular.A．works B．isworking C．hasworked D．worked13．We______ournewneighborsyet,sowedon'tknowtheirnames.A．don'tmeet B．won'tmeet C．haven'tmet D．hadn'tmet14．—______mydictionary?—Yes.Isawitonyourdeskamomentago.A．Haveyouseen B．DoyouseenC．Hadyouseen D．Wouldyouseen15．—HaveyougotanemailfromMillie?—______.Nonewsisgoodnews.A．Yes,Ihave B．Nevermind C．Noproblem D．No,Ihaven't16．Theoldcity_______alotsincetenyearsago.A．changed B．changes C．change D．haschanged17．Tom,willyougotoseethefilmLostInThailandthisevening?No,Iwon't.I_______italready.A．saw B．willsee C．see D．haveseen18．He_______hishomeworkalreadyandnowheiswatchingTV.A．hasfinished B．finishes C．willfinish D．finished19．Ican'tgetintomyroomnowbecauseI_______mykey.A．lose B．willlose C．havelost D．a(chǎn)mlosing二、語法填空20．Wecannevercatchupwiththefashionbecauseit(change)allthetime.21．—you(hear)fromyourparentsrecently?—Yes,I(receive)oneyesterday.22．—CanyoutellmesomethingaboutthefilmTitanic?—Sorry.I(know)nothingaboutitbecauseI(notsee)ityet.23．Look!Therain(stop).Let'sgoonworking.24．Fiveyears(pass)sincehelefthome.25．Things(change)alotovertheyears.三、句型轉(zhuǎn)換26．Theyhavealreadyfinishedreadingtheicbooks.(改為否定句)Theyfinishedreadingtheicbooks.27．WebegantolearnEnglishthreeyearsago.(改為同義句)WeEnglishsincethreeyearsago.28．Nowthegovernmenthasturnedpartofthetowncentreintoanewpark.（改為否定句）Nowthegovernment