Unit1 第3课时 Grammar：现在完成时（一）课件 2022-2023学年牛津译林版英语八年级下册

Unit1Pastandpresent第3课时Grammaradv.还，仍adv.近来，最近adj.过去的→___________adj.LookandReadyetrecentlypastrecentThink&Answer他父母结婚时，他住在苏州。MyparentshavelivedinSuzhousincetheygotmarried.HelivedinSuzhouwhenhisparentsgotmarried.自从我父母结婚以来，他们一直住在苏州。When

doweneedtousethepresentperfecttense?现在完成时的定义①Weusethepresentperfecttensetotalkaboutanactionthatstartedinthepastandcontinuestothepresent.IhavelivedheresinceIwasborn.HehaslivedheresincehecametoNanjing.②Weusethepresentperfecttensetotalkaboutanactionthathappenedinthepastandhasaconnectionwiththepresent.Eddie

has

justeaten

Hobo’sfood.(Eddieatethefood,andnowHobohasnothingtoeat.)Ihavelostmymobilephone.(Ilostmymobilephone,andnowIhavenomobilephonetouse.)③Wealsousethepresentperfecttensetotalkabouthowmanytimesanactionhashappenedtillnow.Ihavealreadyreadthisbookmanytimes.Wecanusethesetimeexpressionswiththepresentperfecttense.alreadyyeteverneverjustrecentlysincefor+一段时间manytimes1.现在完成时的肯定句句型

主语（I/You/We/They）+has

（He/She/It）+have

+过去分词用have/has填空They______

seenthatfilmbefore.Greatchanges_____takenplaceinChinaoverthepast10years.Myfamily______livedinthisareasince15yearsago.2.现在完成时的否定句句型

主语+have/has+not+过去分词+……Ihaveseenthemovie.(改为否定句)Ihaven’tseenthemovie.hasn’t=hasnothaven’t=havenotPractice:1.They_______________________(notfinish)theirhomeworkyet(还未).2.He________________________(notfinish)his

homeworkyet.havenot/haven’tfinishedhasnot/hasn’tfinished3.现在完成时的一般疑问句句型Have/Has+主语+过去分词+……Yes,主语+have/has.No,主语+have/hasnot.Shehasarrivedhere.(改为一般疑问句，并作肯定/否定回答)Hasshearrivedhere?Yes,shehas./No,shehasn’t.4.现在完成时的特殊疑问句句型特殊疑问词+have/has+主语+p.p+其它？e.g.ThegirlhaslearnedEnglishfor6years.

Howlong

hasthegirllearnedEnglish?Ihaveeatentwoapplesforbreakfast.

What

have

youeatenforbreakfast?HaveatryShehascleanedthekitchen.(改为否定句)She________cleanedthekitchen.2.TheyhavevisitedsomeinterestingplacesinChina.(改为一般疑问句)______they___________interestingplacesinChina?3.Thepoordoghasdied.(改一般疑问句并作否定回答）---_________thepoordog_________?---No,it__________.4.Theyhaveborrowedtenbooksfromthelibrary.(对划线部分提问)____________books______they_________fromthelibrary?hasn’tHavevisitedanyHasdiedhasn’tHowmanyhaveborrowed过去分词的变化规则大部分动词+edfinished以e结尾的动词+dchange以y结尾的动词把y改为i+edcarry以重读闭音节结尾的动词双写最后一个字母+edstopdiedped不规则变化AAA型hit-hit-hitAAB型beat-beat-beatenABA型come-came-comeABB型spend-spent-spentABC型do-did-doneHelp

themwritethepastparticiplesoftheverbsbelow.1

borrow

2

hope

3

make

4

get

5plan

6

cry

7send

8watch

9

say

10

grow

11

hit

12

enjoy

ededednedddeiedidnto现在完成时--与already，yet，ever，never，just，recently连用1.already已经，常用于肯定句中，不用于否定句。

Ihavealreadyseenthefilm.

我已经看过这部电影了。2.yet1)已经，常用在疑问句中。

HasLindareadthebookyet?

琳达已看过这本书了吗?

2)还，仍然，常用于否定句。

Hehasnotbeguntoworkyet.

他还未开始工作。注意：当在肯定陈述句中含有already时，在转换成否定句或疑问句时，要把句中的already去掉，在句末加上yet.

Ihaven’tseenthefilmyet.Ihavealreadycleanedthehouse.(改为一般疑问句)Haveyoucleanedthehouseyet?Ihaveseenthefilmalready.(改为否定句)--Haveyoudoneyourhomework?--Not______.(还没有)yet3.ever曾经，主要用于疑问句

Haveyouever

wantedtotravelaroundtheworld?

你曾经想要周游世界吗？4.never从来没有，表示否定

Hehasneverseensuchatallbuilding.

他从未见过这么高的楼。5.just刚刚，常用于肯定句中

Ihave

justfinishedlunch.

我刚吃过午饭。

6.recently近来，最近

Ihaven’tseenthemrecently.

我近来没见过他们。7.for+一段时间8.since+过去的时间点（2000/5yearsago）

+从句（一般过去时）Katehaslivedherefor3years.

凯特已经在这住了3年了。Katehaslivedheresince3yearsago.KatehaslivedheresinceshecametoChina.*主句用现在完成时，从句用一般过去式。现在完成时的标志词Eddie

has

eaten

Hobo'sfood

.just,already,neversince/for+时间时间状语：sincethen,overtheyears,before,recently,overthepastcentury,overthepasttwohoursHasEddie

eaten

Hobo'sfood?everyet不同的标志词所处位置不一样还可以用于否定句，放于句末一般过去时与现在完成时有一些明显的时间状语：遇到yesterday,lastyear,inMay,in+过去某一年，twodaysago,justnow等就用一般过去时。当有in/over/duringthepast/lastfewyears(在过去/最近的几年里),sofar,uptonow/tillnow（直到现在),manytimes（几次）等常用现在完成时。

Helpthemcompletethesentences.6Ourteacher_______________(teach)usalotaboutthehistoryofChina.1

They_______________(finish)theirhomeworkalready.2John______never______(visit)China.3

MrLi_______________(repair)overtenbicyclessinceMonday.4

We_______________(notsee)eachotherforyears.5Myparents_______________(notcome)backyet.havefinishedhasvisitedhasrepairedhaven’tseenhaven’tcomehastaught单项选择1．________he_________fromhisuncleyet? A．Does;hear B．Have;heard C．Has;heard D．Did;hear2．Mike______morethan800peopleinthelasttwoyears. A．isinterviewing B．hasinterviewed C．willinterview D．interviews3．Ihave________alargepackageofpresents. A．prepare B．prepared C．prepares D．preparing单项选择4．—WouldyouliketowatchthemovieHarryPotterwithmetonight?—Sorry,I______itmanytimes.A．watch

B．havewatched

C．willwatch

D．waswatching5．Haveyouever________anythingyoudidn'twanttosay?A．say

B．said

C．saying

D．say1.

I___________(study)inAmericaforoverthreeyears.2.Theyoungman__________(live)alonesincehegraduatedfromcollege.3.ThisisthebestfilmthatI__________(see)sofar.4.—Hello.CanIspeaktoMissBrown?—Sorry,she__________(fly)toCanadaalready.She'llbebackinaweek.5.Inthepasttwoweeks,theartist__________(draw)manypicturesabouthishometown.6.I___________(know)Jimmyforovertwodaysandnowwearegoodfriends.haveknownExerciseshavestudiedhaslivedhaveseenhasflownhasdrawnhaven’tcleanedhasn’tfinishedhavelivedhavedecidedhaslearned/learntHaswritten7.—Whyarethewindowssodirty?—Becausewe_____________(notclean)themforaverylongtime.8.He_____________(notfinish)thehomeworkyet.9.Myfamily__________(live)inNanjingsince1996.10.They________already_________(decide)togotoKunmingfortheholiday.11.Thegirl________________(learn)Englishforabouttwoyears.12._____Tom________(write)letterstoyourecently?1.I’vealr