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Module3Journeytospace1.Tosummariseandconsolidatetheuseofthepresentperfecttensetogetherwithjust,yetandalready2.Tobeabletounderstandlisteningandreadingmaterialsonspacetravel3.TolearntomakeaposteraboutspacetravelObjectivesObservethefollowingsentencescarefullyandpayattentiontothewordsinred.1.I’vejustmadeamodelspaceship.2.Hasitarrivedyet?3.Astronautshavealreadybeentothemoon.4.Wehavenotfoundlifeonanyotherplanetsyet.5.ButnoonehasbeentoMarsyet.6.ScientistshavenotdiscoveredlifeonMarsyet.7.Ihaven’tstartedyetbecauseI’mnotsurehowtomakeit.8.Theyhavejustreceivedamessagefromoneofourspaceships.1.I_____________(make)amodelspaceship.2.____it_______(arrive)____?3.Astronauts_________________(be)tothemoon.4.We______________(notfind)lifeonanyotherplanets____.havejustmadeHasarrivedyethavealreadybeenhavenotfoundyetgoReady?5.Butnoone_________(be)toMars____.6.Scientists__________________(notdiscover)lifeonMars____.7.I__________________(notstart)becauseI’mnotsurehowtomakeit.8.They________________(receive)amessagefromoneofourspaceships.hasbeenyethavenotdiscoveredhavenotstartedyethavejustreceivedyet当表示动作已经完成并对现在有一定影响时，我们一般用现在完成时来表达。此时，可以分别用just，already或yet加以强调或说明。如：Presentperfectwithalready,justandyetIhavejustheardthenews.我刚听到消息。Astronautshavealreadybeentothemoon.宇航员已经去过月球了。Wehavejuststartedtoexploreotherplanets.我们才刚刚开始探索其他行星。Thescientistshavenotheardfromityet.科学家还没有收到它发出的信息。Manhasnotdiscoveredanylifeinspaceyet.人类尚未在太空中发现任何生命。Havethechildrencomehomeyet?孩子们已经回家了吗？从以上例句可以看出，just表示“刚刚”，already表示“已经”，两者都用于肯定句中，一般置于have/has之后。yet则可用于否定句和疑问句中，在否定句中表示“还未”，有“以后可能会”的含义，而在疑问句中表示“已经”的意思。alreadyjusteveryetnever总结：常与现在完成时连用的副词肯定句疑问句和否定句置于句末其余的副词则置于助动词have/has之后，V-ed之前A:Haveyou…?B:Yes,…/No,…(usingalready,just,ever,yet,never)现在完成时表示该事件是在现在之前的某一个时间里发生的，重点在于强调已完成动作对现在的影响一般过去时表示在过去某一具体时间发生的事情IhavejustbeentoLondon.Iwenttherelastmonth.我刚去过伦敦，上个月去的。Ihavealreadyfinishedmyhomework.Ifinisheditanhourago.我已经完成家庭作业了，一小时前完成的。当A问对方把自己的书放在何处时，他强调的是现在找不到了，故用现在完成时。但B的回答只是说明当时放的位置，故用一般过去时。A:Wherehaveyouputmybook?Ican’tfindit.B:Iputitonyourdeskyesterday.当没有明确的过去时间状语时，判断该用现在完成时还是一般过去时的标准是：看该行为是否对现在有影响，即该句所强调的是什么。如：A:Wouldyouliketogoandseethefilmwithmetonight?你今晚想和我去看电影吗？B:Sorry,Ihaveseenitalready.不好意思，我已经看过那部电影了。此时的现在完成时表示对结果的强调：“电影看过了，所以不想再看了”。Astronautshave(1)_______beentothemoonbuttheyhavenotbeentoanyotherplanets.However,aspaceshiphas(2)_____arrivedonMarsandithas(3)______sentbackphotosoftheredplanet.IstherelifeonMars?Wedonotknow(4)______.alreadyjustalreadyyetP21Completethenewswithalready,justandyet.1SpaceshiponMars!☺ThespaceshiphasgonetoMars.Ithasgonethere,butithasnotcomebackyet.☺Astronautshavebeentothemoon.Theywentthereandthentheycameback.P222Lookatthesesentences.Nowchoosethecorrectanswer.1.Astronautshavebeen/gonetothemoonandreturned.2.Thespaceshiphasbeen/goneintospace.Itwilltravelforten...