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Unit3Thereisapolicemanatthedoor.Thereisaboxintheroom.Theboxisheavy.Igotaletteryesterday.Theletterwasfrommysister.Imetanoldmanatthegate.ThisisthemostinterestingbookIhaveeverread.HecomesfromtheUnitedStatesofAmerica.Readthefollowingsentences.Articles(冠词)冠词是放在所说明的名词之前的词,说明名词所指的人或事物,是虚词。冠词分为定冠词和不定冠词两种,不定冠词是a和an、定冠词是the。1)泛指某一类人、事或物；相当于any，这是不定冠词a/an的基本用法。一、在如下几种情况中,常用不定冠词。Ahouseisausefulanimal.马是一种有用的动物。2)表示“一”这个数量,但数的概念没有one强烈。如:Ihaveanewwatch.我有一块新手表。3)指某人或某物,但不具体说明是何人或何物。如:Amanistalkingwithyourfatheroutsidethegate.一名男子正在大门外同你父亲谈话。4)表示“每一”，相当于every。如:Igotoschoolfivedaysaweek.我一周上五天课。6)用在某些固定词组中：alot(of)许多，大量；afterawhile过一会儿Letmehavealookatyourbook.让我看看你的书。5)用在序数词前，表示“又一”，“再一”。如:Ihavethreebooks.Iwanttobuyafourthone.我有三本书，我想买第四本。二、在如下几种情况中,常用定冠词。1)定冠词the常用来特指某(些)人或某(些)事物。如:NewYorkisnotthecapitalofAmerica.纽约不是美国的首都。2)用在序数词及形容词的最高级之前。如:Thethirddressthatheboughtisthemostexpensiveinthisstore.他买的第三条裙子是这家商店里最贵的。3)用在姓氏复数之前,表示一家人。如:TheGreenswillmovetoAustralianextyear.格林一家明年将搬到澳大利亚。4)用在世界上独一无二的事物前。如:TheSunismuchbiggerthantheEarth.太阳比地球大得多。5)用在某些形容词前,表示一类人。如:Therichshoulddosomethingtohelpthepoor.富人应当做些事以帮助穷人。6)用在表示方位的名词前。如:DalianisinthenorthofChina.大连在中国的北部。7)用在由普通名词构成的专有名词前。如:HaveyoueverbeentotheSummerPalace?你去过颐和园吗？8)用于某些固定词组中。如:Bytheway,howisyoursister?顺便问一下,你姐姐好吗？9)用于指代上文提到的人或事物。如:Ifoundabookonthefloor.IthinkthebookisTom’s.我在地上发现一本书，我想这本书是汤姆的。10)用于表示乐器的名词前。如:Mybrotherdoesn’tlikeplayingthepiano.我哥哥不喜欢弹钢琴。零冠词零冠词是指名词前面没有不定冠词、定冠词,也没有其他限定词的现象。在如下几种情况中，常用零冠词：1)在表示类别的不可数名词或复数可数名词前。如:Itisnecessarytodrinkwaterafteryoudoexercise.运动后喝水是必要的。Myfatherandmotherarebothdoctors.我的爸爸和妈妈都是医生。2)名词前已有物主代词或指示代词时,一般不加冠词。如:ThisismycatwhosenameisKitty.这是我的猫，它的名字叫凯蒂。3)非普通名词构成的专有名词前一般不加冠词。如:Tian’anmenSquareisinthecentreofBeijing.天安门广场在北京市中心。4)表示一日三餐、球类和棋类前一般不加冠词。如:Wehadsupperafterplayingfootballyesterday.昨天我们踢足球后吃的晚饭。5)在称呼或表示头衔和职务的名词前一般不加冠词。如:ThisisProfessorLiu,ourEnglishteacher.这位是刘教授,我们的英语老师。6)在学科名称前。如:Englishisanimportantsubject.英语是一门重要的学科。7)在某些固定词组中。如:Igotoworkbybuseveryday.我每天乘公交车上班。Writethewordswitha,an,noarticle(/)orinpluralform.1.There’snoairorwateron____moon.2.___YellowRiveris___secondlongestriverin___China.3.Mymotherboughtme___verynicebike.Ilike____bikeverymuch.theThetheathe/4.XiaoMinglikesplaying____basketball,buthedoesn’tlikeplaying_____piano.5.Thestudentsdon’thaveclassesin___afternoonon____Saturday.6.IoftenwatchTVin____evening.7.Let’sgooutfor____walk.8.Whatwouldyoulikeforlunch,__coffeeor____milk?the/thea//the/9.Youdropped____“u”and____“s”inthisword.10.Thereis____penonthedesk._____penismine.11.Ilikeplaying_____basketball,butIdon’tlikeplaying_____piano.anaThea×the12.Hedrovethecaratthespeedofeightykilometers_____hour.13.IthinkEnglishis_____usefulsubject.Doyouthinkso?14.Hehad_____appleand_____glassofmilkfor______supper.anaana×15.—Whois_____boy?—Heismy____bestfriend.16.DoesBobcomefrom_____USAor_____Australia?17.Lindaworksin_____hospital.Hersisterworksin______samehospital.18.Howdoyougotowork,by_____busoron_____foot?××thethe×athe×Completethepassagewitha,anorthewherenecessary.Minais_____eighteen-year-oldgirl.Shehasgot____brotherand____sister.Minais____oldestchildin____family.Shelivesin____verybigcity.Shehas____jobin____hotel.Shehopestohave____chancetogoto____college.anaathetheaaaa/()17.Ihave______Englishdictionaryandithelpsmealot.A.aB.anC.theD./B()18.Jimis_______goodbaseballplayer.Heplaysinourschoolteam.A.aB.anC.theD./A[中考链接]()19.IthinkEnglishis______usefullanguage,andit’salso______importantlanguage.A.an,aB.a,anC.an,theD.a,theB()20.Mycousinwentabroadat______ageofeighteen.A.aB.anC.theD.不填C()15.Marywasbornin1998andshebegantoplay_______guitarattheageofseven.A．aB．不填C．theC()16.A:Ienjoyedtheperformanceverymuch.B:Yes,itwasreallygood.Ithink________boyinwhitewasthebestactor.A.aB.anC.theD./C()13._______newbridgehasbeenbuiltover______ChangjiangRiverinHuangshi.A.The;aB.A;theC.A;\D.An;the()14.Thereis_____oldbridgenearmyhouse.A.aB.anC.theBB()11.Billlikesplaying_____basketball,buthedoesn’tlikeplaying_____piano.A.the,theB./,theC.the,/()12.______GreensarepreparingforthecomingThanksgivingDay.A./B.AC.AnD.TheBDWorkinpairs.Matchthecountrieswiththeirpopulations.1.China2.theUS3.Australia4.NewZealanda)4,437,000b)22,956,000c)314,791,000d)1,370,537,000Listenandcheckyouranswers.ReadyouranswerstoActivity1tothewholeclass.Chinahasapopulationof…Nowlistenandcheck.Askandanswer.WhatpopulationdoesChinahave?Chinahasthepopulationof1,370,537,000.ThepopulationoftheUSis314,791,000.What’sthepopulationoftheUS?HowmanypeoplearethereinAustralia?22,956,000peoplearelivinginAustralia.4,437,000peopleliveinNewZealand.HowmanypeoplearethereinNewZealand?汉语和英语数字表达的方式不同。汉语是个、十、百、千、万、十万、百万、千万、亿、十亿……，也就是以“十”的倍数来表示；而英语则是在数字超过千以后，以“千”(thousand)的倍数来表达的。如“一万”是“十千”，即tenthousand；“十万”是“百千”，即hundredthousand，直至“百万”，million。百万以上的数字则用“百万”的倍数表达；如“千万”是“十百万”，即tenmillion；“亿”是“百百万”，即hundredmillion；直至“十亿”，billion。连词成句1.problem,population,a,all,the,growing,world,is,over.Growingpopulationisaproblemallovertheworld.2.China,of,population,slowly,may,the,more,grow,in,future,the.ThepopulationofChinamaygrowmoreslowlyinth