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1.数词的种类.3.基数词和序数词的用法.2.数词的拼写.复习导入:数词的拼写１、七２、二３、八４、五５、十二６、十一７、三８、十三９、十五１０、二十１１、五十１２、三十１３、四十１４、百看谁译得快：seventwoeightfivetwelveeleventhreethirteenfifteentwentyfiftythirtyfortyhundred1、第一2、第五3、第二4、第九5、第三6、第八7、第十九8、第二十9、第十二10、第二十一firstfifthsecondninththirdeighthninteenthtwentiethtwentlfthtwenty-first1、数词分几类？2、基数词怎样变序数词?Trytoanswer两类：基数词和序数词。序数词除first,second,third以外，其余一般在词尾加th构成。数词基数词序数词（表示数目多少）（表示顺序先后）forty-five基数词的拼写:3145576689thirty-onefifty-sevensixty-sixeighty-nine21~99的两位数，在十位数和个位数之间中间有“－”。如：34—thirty-four三位基数词的拼写457890608389threehundredandeighty-ninefourhundredandfifty-seveneighthundredandninetysixhundredandeight101~999的三位数由“百位数＋and+两位数组成”。如：325—threehundredandtwenty-five1.Myfatherhasgoteight_____stampsfromallovertheworld.A.hundredsB.hundredC.hundredsof2.Theconcertattracted____studentslastnight.A.thousandB.twothousandsC.thousandsofBC基数词与hundred;thousand;million;billion等连用,表示确切、具体的数目时,词尾不加“s”；如：fivehundred,sixthousand,sevenmillion,ninebillion等。当hundred,thousand，million;billion等与“of”连用时用复数形式．如：thousandsofstudents,millionsoftrees.1.Thechildrenaregoingtolearn____tomorrow.A.LessonThirdB.theLessonthreeC.LessonThree2.Idon’tknowifhelivesin________.A.Room215B.theRoom215C.215roomsCA▲表示编号：单数名词＋基数词,且名词与数词的第一个字母一般都要大写;用序数词表示编号时,要位于名词前,且要加定冠词the.如:LessonEight/theeighthlesson;Page15,RowThree/thethirdrow;BusNo.37编号：练习三初三（4）班第一课第三中学：第十三路公共汽车LessonOne=thefirstlessonExerciseThreeClassFour,GradeThreeNo.3MiddleSchoolBusNo.13年份的表达法1875--eighteenseventy-five要用基数词，每两位一读，如果年份以00结尾，用hundred表示。1997--nineteenninety-seven1682--sixteeneighty-two小知识1900--nineteenhundred2000--twothousand时刻表达法：1.-What’stheEnglishfor“6:10”?–It’s___.A.sixtenB.tensixC.tentosix2.9:45is_______.A.aquartertonineB.aquarterpastnineC.aquartertoten3.It’s______.Letsgoandplayfootball.A.fiftypastfourB.tentofiveC.fiftytofiveACB情况顺读法示例整点几时几分时刻的表达法基数词(+o’clock)9:00(nineo’clock)钟点数+分钟数9:40nineforty时刻的表达法:情况逆读法示例分钟数30分钟数30分钟数=30分钟数=15分钟数=45分钟数+past+钟点数9:10tenpastnine(60-分钟数)+to+(钟点数+1)9:50tentotenhalfpast+钟点数9:30halfpastnineaquarterpast+钟点数9:15aquarterpastnineaquarterto+(钟点数+1)9:45aquartertoten说明:使用逆读法,15分、45分不用fifteenminutes,30分不用thirtyminutes,o’clock只用于整点之后。完成下列句子。1、我们在6：15起床。Wegetupat____________________.2、他在7：30去学校吗？Doeshegotoschoolat____________?3、Lily不在11：45回家。Lilydoesn’tgohomeat______________.4、他们在9：28上床睡觉。Theygotobedat__________________.5、妈妈在7：43看电视。MotherwatchesTVat__________________________.sixfifteenaquarterpastsixseventhirtyhalfpastsevenelevenforty-fiveaquartertotwelveninetwenty-eighttwenty-eightpastninesevenforty-threeseventeentoeight基数词与单数名词构成复合形容词,中间要用连字符“-”.例：aneight-year-oldboy一个八岁的男孩atwo-dayholiday一个两天的假期1.A_____schoolboy,LiMing,playedthepianoattheendoftheparty.A.12-yearoldB.12-years-oldC.12-year-old2.Theywillhavea______________.A.20daysholidayB.20day’sholidayC.20-dayholidayCC容易写错的序数词和基数词对照表：基数词序数词缩写形式onetwothreefiveninetwelvetwentyforty-eightfirst1stsecond2ndthird3rdfifth5thninth9thtwelfth12thtwentieth20thforty-eighth48th基变序有规律，词尾加上“－th”．“一，二，三”特殊记，加th从4起(first,second,third,fourth)。八去t，九减e，(eighth,ninth)20到90，y要变ie(twentieth,ninetieth)逢5逢12，ve变f(fifth,twelfth)若是几十几，前基后序别倒位(ninety-first)。序数词缩写记清楚，数字后跟两字母。基数词变序数词的规则：1.Johnliveson_______floor.A.nineB.ninthC.theninth2.Weallthinkthatthe_____centurywillbringusmorehopes.A.twenty-oneB.twentieth-firstC.twenty-first3.Thisis_____visittoChina.A.secondB.mythesecondC.mysecond4.Onhis____birthday,hegotalotofpresents.A.twelveB.twelfthC.thetwelfthCCCB序数词前要有定冠词the，如前有形容词性物主代词时，不用定冠词.如：the+序数词+名词单数1.IhavealreadybrokentworulerssoIwanttobuya____one.A.threeB.thirdC.fourth2.为什么不再试一次？BWhynottryasecondtime?序数词前用不定冠词a/an时表示“再一，又一”，相当于another.分数表达法:例:onethird;twofifths1.Inourclass,_____ofthestudents____girls.A.threefifths,areB.threefifth,areC.threefive,are2.____ofthewater_____drunkup.A.Twothirds,hasB.Twothird,isC.Twothirds,wasAC分子用基数词,分母用序数词.当分子大于1时,序数词之后加“s”.谓语动词的数由分数后面的名词决定．“年”用基数词，“日”用序数词，前面要加定冠词.例:1999年10月1日：年、月、日的表达方法：有两种表达方式:月份+the+某日的序数词+年份或the+某日的序数词+of+月份+年份October1st,1999读作:Octoberthefirst,nineteenninety-nine或thefirstofOctober,nineteenninety-nine1、基数词的拼写.2、序数词的拼写.3、hundredthousandmillionbillion的用法.4、用数词表示编号、时刻、年月日.5、分数的表达法.Summary:本节课内容小结:连接中考----历届中考试题1._____GuangdongSportsGameswasheldinFoshanlastNovember.A.ThetwelveB.TwelfthC.Thetwelfth2.Mothers’Dayfallson____SundayofMay.A.twoB.secondC.thesecond3.Everyyear_____oftreesareplantedonthehillstoprotecttheenvironment.A.athousandB.thousandsC.thousand4.–Hasthepartystarted?--No.Onlyfourgirlshavecome.Youare______.A.fiveB.fifthC.thefifth5.Mother’sDayison____SundayofMay.A.twoB.secondC.thesecondCompletethesentences1、一年有365天.Thereare____________________________daysinayear．2、看!天空中有成千上万颗星星.Look!Thereare__________________starsinthesky．3、她有一个十个月大的婴儿.Shehas_________________________baby.4、他出生于1991年7月5日.Hewasborn________July__________,1991.5.他班三分之二的学生是女孩.__________________ofthestudentsaregirlsinhisclass．threehundredandsixty-fivethousandsofaten-month-oldonthefifthTwothirds