江苏省苏州市高新区第三中学校八年级英语下册 Unit 3 Online tours Grammar课件 .ppt
1.Tounderstandthedifferencesbetweenthesimplepasttenseandthepresentperfecttense.2.Tograsptheexpressionswiththepresentperfecttense.3.Tograsptheexpressionswiththesimplepasttense.4.Tounderstanddifferentusesofthepresentperfecttense.完成句子。完成句子。1.北京因万里北京因万里长长城而著名。城而著名。Beijing_theGreatWall.2.这这条河是个条河是个钓鱼钓鱼的好地方。的好地方。Thisriverisa_fishing.3.我三天前听我三天前听说过这说过这件事。件事。I_this_.4.自从自从2000年起，他就在上海工作了。年起，他就在上海工作了。He_inShanghai_2000.is famous forgood place to goheard of three days agohas worked sincedreamvi.&vt.做梦，梦想做梦，梦想dreamabout/of想象；梦想想象；梦想e.g.Doyouoftendreamatnight?你在夜里你在夜里经经常做梦常做梦吗吗？Isometimesdreamaboutmyparents.我有我有时时梦梦见见我的父母。我的父母。Idreamofbecomingateacher.我一心想当个教我一心想当个教师师。passportn.护护照照Daniel两年前去了北京。两年前去了北京。DanielwenttoBeijingtwoyearsago.Daniel已已经经在北京居住两年了。在北京居住两年了。DanielhaslivedinBeijingfortwoyears.We use simple past tense to tell what happened in the past.We use the present perfect tense to talk about an action that started in the past and continues to the present.1.三年前他养了只猫做三年前他养了只猫做宠宠物。物。He_acataspetthreeyearsago.2.这这只只宠宠物猫他养了三年了。物猫他养了三年了。He_thepetcatforthreeyears.kepthas keptDaniel上个月上个月买买了台新了台新电脑电脑。Danielboughtanewcomputerlastmonth.Daniel已已经买经买了台新了台新电脑电脑。Danielhasboughtanewcomputer.(Danielhasanewcomputernow.)We use the simple past tense to tell what happened in the past.We use the present perfect tense to talk about the result of an action.When the action happened is not very important.It may have just happened or happened some time ago.1.我上个星期去参我上个星期去参观观了那个新了那个新动动物园。物园。I_thatnewzoolastweek.2.我已我已经经参参观过观过那个新那个新动动物园了。物园了。I_thatnewzoo.visitedhave visited吴老吴老师师2010年和年和2011年年访问过访问过加拿大。加拿大。MrWuvisitedCanadain2010and2011.吴老吴老师师已已经经去去过过加拿大两次。加拿大两次。MrWuhasbeentoCanadatwice.We use the simple past tense to tell what happened in the past.We use the present perfect tense to tell how many times an action has happened till now.1.我上周看我上周看过这过这部部电电影。影。I_thismovielastweek.2.我已我已经经看看过这过这部部电电影很多次。影很多次。I_thismoviemanytimes.sawhave seenSimon is showing Millie some pictures.Complete his sentences with the correct forms of the words in brackets.I_(visit)thePalaceMuseumwithmygrandparentstheotherday.I_(climb)MountHuanglastSummer.visitedclimbed_youever_(try)thefamousTianjinBaozi?IamhappythatI_(learn)toswim.Have tried have learntMr Wu is asking the students to make sentences with the correct tenses.Help them complete the sentences with the correct forms of the words in brackets.1.I_(finish/just)myhomework.Millie_(finish)herhomework20minutesago.2.I_(write)anemailtomyfriendyesterday.Daniel_(write/already)twoemails.has already writtenhave just finishedwrotefinished3.I_(be)inHainanlastweek.Someofourclassmates_(notbe)toHainanyet.4.I_(live)inSunshineTownsinceIwasborn.Daniel_(live)inNanjingin2007.waslivedhave livedhaven not beenMillie has never been to Nanjing.She is asking Simon about the city.Complete their conversation with the correct forms of the words in brackets.Millie:_(you/be/ever)toNanjing?Simon:Yes.I(2)_(be)therethreetimes.Millie:When(3)_(you/go)therelast?Simon:Lastsummer.I(4)_(spend)aweekthere.Millie:(5)_(you/like)it?Have you ever beenhave beendid you gospentDo you likeSimon:Ohyes.I(6)_(have)agreattimethere.I(7)_(visit)manyplacesofinterestand(8)_(eat)lotsoflocalfood.Millie:Luckyyou!I(9)_(be/never)there.hadvisitedatehave never beenMillie is writing about the USA in her diary.Complete her diary entry with the correct forms of the verbs in the box.bebuyreadreturnseeshowSaturday,15MarchHaveyoueverdreamtoftravellingaroundtheworldwithoutapassport?Yes,youcanrealizeyourdreambytakinganonlinetour.YesterdayDanniel(1)_meanonlinetouroftheUSA.I(2)_never_somanywonderfulpictruesbefore.showedhave seenLastweek,I(3)_abookabouttheplacesofinterestintheUSA.I(4)_20pagesalready.Itsreallyinteresting.Mydad(5)_just_fromtheUSA,butI(6)_never_there.IhopeIcanvisittheUSAsomeday.bebuyreadreturnseeshowhave beenboughthave readhasreturnedWeoftenusethesetimeexpressionswiththesimplepasttense:yesterday/thedaybeforeyesterdaytheotherdayjustnow/inthepastlast.agoin（过去的年份）（过去的年份）Weoftenusethesetimeexpressionswiththepresentperfecttense:alreadyuptonoweveruntil/tillnowjustsofarrecently(not)yetsinceforinthepastyearsTips:someday和和theotherday的区的区别别：someday指将来指将来“总总有一天、有朝一日、有一天、有朝一日、终终将、将、(日后日后)某一天某一天”，谓语动词谓语动词用用一般将一般将来来时时。如。如:Yourwisheswillcometruesomeday.总总有一天你的愿望会有一天你的愿望会实现实现的。的。Somedayyoullhavetopayforwhatyouhavedone.总总有一天你要有一天你要为为你的行你的行为为而付出代价的。而付出代价的。Tips:someday和和theotherday的区的区别别：theotherday相当于相当于afewdaysago,意意为为“几天前、某天、那天、不久前几天前、某天、那天、不久前”，句中用一般，句中用一般过过去去时时。如：。如：Imetherinthestreettheotherday.几天前我在街上碰几天前我在街上碰见过见过她。她。Iboughtthewatchtheotherday.这这手表我是几天前手表我是几天前买买的。的。1)一般过去时一般过去时表示过去某时发生的动作或表示过去某时发生的动作或单纯叙述过去的事情，单纯叙述过去的事情，强调动作强调动作；现在现在完成时完成时为过去发生的，强调过去的事情为过去发生的，强调过去的事情对现在的影响，对现在的影响，强调的是影响强调的是影响。2)一般过去时常与具体的时间状语连用一般过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语而现在完成时通常与模糊的时间状语连用，或无时间状语连用，或无时间状语。一般过去时的时间状语一般过去时的时间状语：yesterday,lastweek,ago,in1980,inOctober,just,now等，皆为具体的时间状语。等，皆为具体的时间状语。现在完成时的时间状语现在完成时的时间状语：for,since,sofar,ever,never,just,yet,till/until,uptonow,inpastyears,always等，皆不确定等，皆不确定的时间状语。的时间状语。共同的时间状语共同的时间状语：thismorning,tonight,thisApril,now,already,recently,lately等。等。3)现在完成时现在完成时可表示持续到现在的动作或可表示持续到现在的动作或状态，状态，动词一般是延续性的动词一般是延续性的，如：，如：live,teach,learn,work,study,know。一般过去时一般过去时常用的常用的非持续性动词非持续性动词有有come,go,leave,start,die,finish,become,getmarried等。等。句子中如有过去时的时间副词句子中如有过去时的时间副词（如（如yesterday,lastweek,in1960）时，）时，不能使用现在完成时，要用过去时不能使用现在完成时，要用过去时。（错）（错）Tomhaswrittenalettertohisparentslastnight.（对）（对）Tomwrotealettertohisparentslastnight.Finish off the exercises in workbook.
