Unit3TheworldatoneclickGrammar课件译林英语八年级下册

年级：八年级

学科：英语（译林版）

Unit3Theworldatoneclick

(Grammar)Presentation1.Whatarethepartsofspeechofthewordsinbold?2.Whataretheformsoftheseverbs?Andwhichtensearetheyusedin?Theyareverbs.Someareverbsinthesimplepastwhile

somewordsarepastparticiples.SimplePastTensePresentPerfectTensePresentation:DifferencesbetweensimplepasttenseandpresentperfecttenseDifference1:Canyoumaketwosentencesaccordingtothefirstdifference?HewenttothefactorylastSeptember.Hehasworkedinthefactorysince

lastSeptember.•Weusethesimplepasttensetodescribe

whathappenedinthepast.Theactionisfinished.我们使用一般过去时来描述过去发生的事情，且该动作已经结束。pastpresentMyfamilymovedtoLiverpooltwoyearsago.twoyearsago•Weusethepresentperfecttensetotalkabouttheresultofanaction.我们使用现在完成时来谈论某动作的结果。MyfamilyhasmovedtoLiverpool.pastpresent(MyfamilylivesinLiverpoolnow.)重点在于陈述搬到利物浦这一过去发生的事件。重点在于谈论我们现在还住在利物浦这一结果。•Weusethesimplepasttensetodescribe

whathappenedinthepast.

我们使用一般过去时来描述过去发生的事情。pastpresentMydadwenttoChinalastmonth.•Weusethepresentperfecttensetodescribe

howmanytimesanactionhashappeneduptothepresent.

我们用现在完成时来描述某个动作到目前为止已经发生的次数。MydadhasbeentoChinathreetimes.pastpresentlastmonth重点在于陈述父亲上个月去过中国这一过去发生的事件。重点在于谈论父亲去过中国三次(现在对中国比较熟悉)。Presentation:DifferencesbetweensimplepasttenseandpresentperfecttenseDifference2:Canyoumaketwosentencesaccordingtotheseconddifference?Hestudiedintheschool5yearsago.Hehasalreadyfinishedhisstudyathisschool.Weuse_________________tensetodescribewhathappenedinthepast.Weuse__________________tensetotalkabout:anactionthatstartedinthepastandcontinuestothepresent;theconnectionbetweenapastactionandthepresent;howmanytimesanactionhashappeneduptothepresent.thepresentperfectthesimplepast1.TheShenzhou-18astronauts(宇航员)__________(return)totheEarthonNovember4th,2024.2.Thetrainislate.We_______________(wait)foritatthestationsince2p.m.3.Yourfather__________(drink)toomuch.Hecan’tdrivenow.4.—Jane,________youever__________(eat)Chinese dumplings? —Yes.Myteacher________(make)dumplingsforustheother day.5.—I________________(finish)thebookreportalready.What aboutyou,Susan?

—Well,I___________(finish)ityesterday.用所给单词的适当形式填空。returnedhavewaitedhasdrunkhaveeatenhavefinishedfinishedmadeDifferencesbetweensimplepasttenseandpresentperfecttenseDifference3:Canyoumaketwosentencesaccordingtothethirddifference?Hewatchedthefilmlastweek.Hehaswatchedthefilmtwice.simplepast

presentperfectDifferencesbetweensimplepasttenseandpresentperfecttenseSimonistalkingwithMillieaboutsomeonlinevisits.Completetheirconversationwiththecorrectformsofthewordsinbrackets.AP41HavetriedhaveseenvisitedhaveplayedhasvisitedhaslearntLookandlearn.Therearesomedifferencesbetweenthesimplepasttenseandthepresentperfecttense.Weusethepresentperfecttensetodescribe________________anactionhashappened__________.MydadhasbeentoChinathreetimes.pastpresenthowmanytimestillnow我们用现在完成时，用来描述“到现在为止，某个动作发生的总次数”。PresentationRead

the

second

difference

and

answer

the

questions.Whatdoes

the

second

sentence

tellus?Ittellsustheresultofanactionwhichhappenedinthepast.Weuse______________tensetotellwhathappenedinthepast.Weuse___________________tensetotalkabout:anactionthatstartedinthepastandcontinuestothepresent;theresultofanaction;howmanytimesanactionhashappenedtillnow.thesimplepastWorkouttherules.We’velivedinasmallflatsincewearrived.MyfamilyhasmovedtoLiverpool.

(MyfamilylivesinLiverpoolnow.)MydadhasbeentoChinathreetimes.Wemovedintoasmallflatwhenwearrived.MyfamilymovedtoLiverpooltwoyearsago.MydadwenttoChinalastmonth.thepresentperfectPracticeMake

two

sentences

according

to

the

second

difference.Sentence1:Hestudiedintheschoolfiveyearsago.Sentence2:

Hehasalreadyfinishedhisstudiesatthisschool.Workouttherules.MyfamilyhasmovedtoLiverpool.

(MyfamilylivesinLiverpoolnow.)MydadhasbeentoChinathreetimes.We’velivedinasmallflatsincewearrived.TipWeoftenusethesetimeexpressionswiththepresentperfecttense:already;ever;just;recently;(not)yet;sofar;uptonow;until/tillnowWemovedintoasmallflatwhenwearrived.MyfamilymovedtoLiverpooltwoyearsago.MydadwenttoChinalastmonth.TipWeoftenusethesetimeexpressionswiththesimplepasttense:yesterday;theotherday;last...;...ago”thesimplepastthepresentperfectRead

the

third

difference

and

answer

the

questions.Whatdoes

the

first

sentence

tellus?Ittellsuswhathappenedinthepast.

1.定义

谓语动词用“动词的过去式”：规则动词：直接加“ed”（如：moved、visited、introduced）；不规则动词：需记忆对应过去式（如：went、brought、saw）。2.标志词表示“明确的过去时间”：yesterday；theotherday；last...（如lastmonth、lastweekend）；...ago（如twoyearsago）Workouttherules.thesimplepastthepresentperfectRead

the

third

difference

and

answer

the

questions.Whatdoes

the

second

sentence

tell?Ittellsushowmanytimestheactionhashappeneduptothepresent.1.结构谓语动词用“have/has+动词的过去分词”：主语是第一/二人称、复数：用“have+过去分词”；主语是第三人称单数：用“has+过去分词”；过去分词：规则动词加“ed”不规则动词需记忆。2.标志词表示“与现在相关的时间/结果”：already；ever；just；recently；(not)yet；sofar；uptonow；until/tillnow；since+过去时间/句子（如sincewearrived）；次数短语（如manytimes、threetimes）Workouttherules.thepresentperfect二、时态填空(用一般过去时或现在完成时填空。)1.

A:________you________(see)mypen?Ican’tfindit.B:Yes,I________(see)itonyourdeskjustnow.2.

He________(live)inBeijingin2020.He________(live)inBeijingfor5years.3.

They______________(notvisit)theGreatWallbefore.They________(notvisit)theGreatWalllastyear.4.

________youever________(be)toLondon?When________you________(go)there?5.

I________(read)thisbookalready.I________(read)itthreedaysago.当堂检测Haveseensawlivedhaslivedhaven’tvisiteddidn’tvisitHavebeendidgohavereadreadCompletetheirconversationwiththecorrectformsofthewordsinbrackets.ARead

and

complete.Millie:Hi,Simon.Somemuseumsofferonlinetours.(1)______youever______(try)oneofthem?Simon:Yes.IvisitedtheShaanxiHistoryMuseumlastweekend.AndIalsovisitedtheDigitalDunhuangwebsite.I(2)__________(see)tencavesonitsofar.Millie:Nice!I(3)______(visit)thewebsiteoftheHangzhouArtsandCraftsMuseumyesterday.Besideslocalarts,therearesomeonlinegamesforteenagers.I(4)____________(play)onesixtimessofar.It’sinteresting!Simon:Onlinemuseumsarereallygreat!MyfriendNeillivesintheUK.Hehasn’tbeentoChinainperson,buthe(5)__________(visit)thePalaceMuseumonlinemanytimes.Sofar,he(6)__________(learn)alotaboutthemuseum.HavetriedhaveseenvisitedhaveplayedhasvisitedhaslearnedMake

two

sentences

according

to

the

third

difference.Sentence1:Hewatchedthefilmlastweek.Sentence2:Hehaswatchedthefilmtwice.PresentationRead

the

tips

on

page

40.Weoftenusethesetimeexpressionswiththepresentperfecttense:

already,ever,just,recently,(not)yet,sofar,uptonow,until/till