八年级英语上册 Module 1 Amazing things Unit 2 Numbers More practice课件 （新版）牛津深圳版.ppt

Morepractice,Countingbeforenumbers,Brainstorming,Beforenumbers,whatdidancientpeopleusetocountthingslongtimeago?,Readtheonlinearticleandthencompletetheflowchartaboutthedevelopmentofcountingmethods.,Countingbeforenumbers,1,2,3,4,5,theirfingersandeventheirtoes,smallmarksonsticksandbones,tokensmadefromclayorsmallstones,systemsofwritten,theHindu-Arabicsystem,Languagepoints,1.Beforetheinventionofwrittennumbers,peopleusedmanydifferentwaystocountthings.在文字数字发明之前，人们用很多不同的方式来算数(1)inventionn.“发明”；v.invent;n.inventor(2)countv.“计算，计数”。(3)usetodo“用来做某事”。,2.However,theycouldonlycountsmallnumbersinthisway.然而，他们仅仅以这种方式来算数目小的数。(1)however“然而”；后面有逗号，同义词but后直接加内容。(2)inthisway“以这种方式”。,3.Afterthat,theybegantomakesmallmarksonsticksandbones.那以后，他们开始在棍子和石头上作小标记。begintodosth.“开始做某事”，相当于begindoingsth.beginwith“以开始”begin可与start互换。,4.Thishelpedthemcountbiggernumbers.这帮助他们计算更大的数目。helpsb.dosth.“帮助某人做某事”，动词不定式to常省略。也可用helpsb.withsth.;有时也可直接用helpdosth.,5.Theyusedthemtocountthingslikethewaysofthemonth,theamountoffoodandthenumberofanimalstheyhad.人们使用他们来算数，像月份的方式，他们拥有的食物的数量，动物的数目等(1)theamountof“的数量”后加不可数名词。(2)thenumberof“的数目”后加可数名词的复数形式。,6.Thenpeoplebegantousetokensmadefromclayorsmallstones.然后人们开始使用用黏土或小石头制成的代币.(1)token“代币”；clay“黏土”。(2)madefrom在这里是过去分词短语作后置定语。,7.Theyoftenputthetokensonpiecesofstringsothattheycouldcarrythemaroundeasily.人们经常把代币串在绳子上以便容易携带。sothat“以便”；另有用法sothat“如此以致”其中so后加副词或形容词；that后加句子。如：Hewassoangrythathecouldnotsayaword.,8.Thisdevelopedintotoolsliketheabacus.这发展成了像算盘这样的一些工具(1)developinto“发展成”“开发成”。(2)like介词“像”。developed“发达的”，developing“发展中的”,developmentn.发展,9.Finally,peoplebegantodevelopsystemsofwrittenmarkstoshowdifferentnumbers,andthisledtotheHindu-Arabicsystem.最后，人们开始开发书写标记的方法来表示不同的数字，而这通向了印度阿拉伯系统。(1)system“系统；制度；方法”(2)leadto“引起，导致，通向的路”。lead过去式是led;leadsb.to“把某人带领到.”。,Exercise,1.Atweekends,Iusuallyhelpmymum_somehousework.A.todoingB.doC.doesD.fordoing2.Ihavemanyhobbies_singing,playingchessandsoon.A.arelikeB.likeC.forexampleD.looklikes,3.Theoldfarmerarecounting_moneyand_animalshehad.A.theamountof;thenumberofB.theamountof;theamountofC.thenumberof;theamountofD.thenumberof;thenumberof,4.吃完晚饭后，他开始做作业了。Afterdinner,he_hishomework.5.中国好声音以这种方式吸引越来越多的观众。Voi