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1、Module1Unit2NumbersIntroductionsaboutnumbersWhatdoyouknowaboutthelanguageofnumbers?Weallusenumbersinourdailylife.Numbersareaninternationallanguage.Adecimalnumberiswrittenasadot.eg.0.65(zeropointsixfive/sixty-five)8.08(eightpointoeight.)Readthefollowing:7.53,3.42,0.01,
2、86.201adecimalnumber(小數(shù)）Afractionistheexactdivisionofanumber.eg.?:onehalf2/3:two-thirds?aquarter1/10one-tenthReadthefollowing:3/5,6/11,1/82afraction(分?jǐn)?shù)）Oddnumberscannotbedividedbytwotogiveawholenumberwithoutafraction.3oddnumbers(奇數(shù)）4evennumbers偶數(shù)）Evennumberscanbedivid
3、edbytwotogiveawholenumber.5plus,add(加）２＋５＝７Twoplusfiveisseven.Twoandfiveisseven.3+12=?What(Howmuch)is3plustwelve?Readthefollowing:25+24=4930+12=?6minus(減，減號，負(fù)號）subtract(減)12-3=9Twelveminusthreeisnine.Threesubtractedfromtwelveisnine.Readthefollowing:2-2=019-12=797-65=?
4、7multiply乘２×３＝６Twotimesthreeissix.Twomultipliedbythreeis6.Readthefollowing:16×4=645×3=158divide除30÷6=5Thirtydividedbysixisfive.Readthefollowing:20÷4=518÷3=6SpeakingTalktime1.Saythesecardinalnumbers.284,653twohundredandeighty-fourthousandsixhundredandfifty-three1,367,9
5、82onemillionthreehundredandsixty-seventhousandninehundredandeighty-two（1）billion,million,thousand后面的位數(shù)上為非零的數(shù)字時，則不要加and,如下列數(shù)字2，008twothousandandeight706sevenhundredandsix（2）billion,million,thousand后面的位數(shù)上為零的數(shù)字時，則要加and,如下列數(shù)字2Saythesesentenceswithordinalnumbers.Wheredothe
6、ylive?May:1Mayisonthefirstfloor.Alan:2Alanisthesecondfloor.Danny:3Dannyisthethirdfloor.June:9Juneistheninthfloor.Peter:12Peteristhetwelfthfloor.Alice:19Aliceisthenineteenthfloor.Steve:40Steveisthefortiethfloor.3Saythesedecimals..3:pointthree0.3zeropointthree.368pointt
7、hreesixeight7.145sevenpointonefourfive36.36thirty-sixpointthreesix4Saythesetelephonenumbers.39215143356513513471012233894167WhenwesaytelephoneorIDcardnumbers,wesayeachnumberseparately.For0wesayzerooro.Whentwoofthesamenumberaretogether,wecansaydoublebeforethenumber.Exe
8、rcise1.Readthefollowing:3003053154334,5005,3456,6057,056threehundredthreehundredandfivethreehundredandfifteenfourthousandfiv
