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Unit4ThenandnowIntroduceName...yearsagoNowMikeMrBrownMike’sgrandpaMrsBrownWords名词,表示“收音机”常用短语：listentotheradio听收音机aboutradio关于收音机eg：Thestudentsarelisteningtotheradioinmusicclassnow.同学们正在音乐课上听收音机。小练习：你喜欢听收音机吗？Doyoulike______________the_________?listeningtoradioradio/'reɪdɪəʊ/Words名词,表示“电视机”,完整形式为：television常用短语：watchTV看电视manyTVs许多电视机eg：WewatchTVeveryevening.我们每天晚上都看电视。小练习：（）Peoplelikewatching_______everyevening.A.TVB.filmATV/ˌti:ˈvi:/Expressionscould表示过去的能力。而can不表示过去特定能力,通常只限于肯定句,否定句或疑问句。Hecouldnotwrite.他不能写。eg：CouldhespeakEnglish?那时候他会说英语吗？小练习:（）They__________danceintheparkthen.A.doB.couldBExpressionswrote是write的过去式,主语：MrBrown谓语：wrote宾语：letters宾语补足语：tohisfriends.MrBrownwroteletterstohisfriends.MrBrown写信给他的朋友们。eg:Mikewrotefewletterstoanyofhisfamily.Mick没怎么给家里写信。小练习:LastyearYangLing___________(write)letterstoherbestfriend.wroteExpressions情态动词can不能独门存在,它必须与动词原形一起构成谓语。没有人称和数的变化。NowhecanreadandwatchnewsontheInternet.现在他可以在网上看新闻。eg:IcanspeakChinese.我会讲汉语。小练习:Amy不会说英语。Amy__________speakEnglish.他会跳舞。He__________dance.can’tcanDialoguesSharethechangesthattakeplacearoundusovertheyearswithyourclassmates!Expand四大发明是指中国古代对世界具有很大影响的四种发明。即造纸术、指南针、火药、活字印刷术。中国四大发明造纸技术的发明,是中华民族对世界文明的杰出贡献之一。它的发明地点是洛阳。指南针是用以判别方位的一种简单仪器。前身是司南。常用于航海、大地测量、旅行及军事等方面。Expand用硝石、硫磺和木炭这三种物质混和制成的,而当时人们都把这三种东西作为治病的药物,所以取名“火药”,意思是“着火的药”。中国四大发明活字印刷术开始于隋朝的雕版印刷,经宋仁宗时的毕升发展、完善，产生了活字印刷,并由蒙古人传至了欧洲,所以后人称毕升为印刷术的始祖。SummaryradioTVwrite-wrotecould/can/can’tExercise1.Sevenyearsago,I_________write,butI________read.A.can,can’tB.couldnot,couldC.couldnot,can2.Myfatherdoes________ontheInternet.A.shoppingB.shopsC.shopingBAExercise3.I___________alettertomyunclelastnight.A.writeB.writedC.wrote4.Helen___________thisstorybooktwodaysago.A.readB.readsC.readedCAExercise5.Ihavee-friendsfromall_________theworld.A.ofB.overC.on6.Tenyearsago,I___________thetelephoneto___________people.A.use,callB.used,calledC.used,callBCHomeworkCompletestoryframeworkaloneandrecitethearticle!一般疑问句Didyoucatchanyfish?Yes,Idid.句型结构Did+主语+动词原形+其它？Yes，主语+did.\No,主语+didn’t.特殊疑问句Whatdidyoudothere?Howwasyourholiday,Mike?WewenttotheBound.Itwasfun.句型结构特殊疑问词+一般疑问句+？主语+动词过去式规则与不规则变化。