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时间:2021-04-17
《最新小学英语语法:数词教学讲义PPT.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、小学英语语法:数词一.基数词1)1-12,独立成词。onetwothreefourfivesixseveneightnineteneleventwelve2)13--19,由3-9+teen构成。14–fourteen16--sixteen17--seventeen19—nineteen特殊拼写:13–thirteen15--fifteen18—eighteen3)20-90整十位数,以-ty结尾。20—twenty30---thirty40—forty50—fifty80---eighty60---sixty70---sevent
2、y90—ninety4)21-99,两位数,十位与个位之间有“-”。21twenty—one55fifty—five99ninety—nine25)101—999,三位数,百位与十位/个位之间加and。101onehundredandone840eighthundredandforty693sixhundredandninety-three1,000以上数目,从右向左每三位用“,”分开,分别读为thousand,million,billion。6,500,431,729and—billionmillionthousandhundre
3、d1.表示倍数例:Twicethreeissix.三的两倍是六。fivetimesthreeisfifteen.三的五倍是十五。32)有些分数可用half和quarters表示:例:1/2a(one)half1/4a(one)quarter3/4threequarters半年halfayear半小时halfanhour一年半oneandahalfyears(oneyearandahalf)1)分子大于1时,分母序数词的复数形式(加-s)例:2/3two-thirds3/4three-fourths2.表示分数例:0.7zeropoi
4、ntseven326.1threehundredandtwenty-sixpointone3.1415926……threepointonefouronefiveninetwosix……3.表示小数例:0.7%zeropointsevenpercent26%twenty-sixpercentFortypercentoftheapplesonthetreearegreen.那棵树上百分之四十的苹果都是绿的。4.表示百分数例:3+4=7threeplusfourequalsseven.4-3=1fourminusthreeequalson
5、e.4×3=12fourtimesthreeistwelve.12÷4=3twelvedividedbythreemakesfour.5.表示四则运算6.表示编号第一课第32页第305房间第12路公共汽车TheFirstLesson(在句子中不大写)LessonOnethethirty-secondpagePage32/PageThirty-twoRoom305BusNo.127.表示(摄氏)温度fiftydegreescentigrade(50摄氏度)8.表示长、宽、高例:50米长fiftymeterslong21米宽twenty
6、-onemeterswide3米高threemetershige.1.8米深tonepointeightmetersdeep9.表示货币注意:人民币yuan(元)没有复数形式美元:dollar→dollars英镑:pound→pounds10.表示年、月、日、时刻例:1949nineteenforty-nineJanuaryAprilJulyOctoberFebruaryMayAugustNovemberMarchJuneSeptemberDecember9月10日Septemberthetenth10月1日Octoberthefi
7、rstWhatisthetime?six/sixo’clocksevenfifteen/aquarterpastsevenninethirty/halfpastninesixforty/twentytosevenninetwenty/twentypastninefourofive/fivepastfour练习题:1.写出下列数词相对应的基数词或序数词。1)One.2)Two.3)three.4)nine.5)twelve.6)twenty.7)eighty-eight.8)sixty-two.9)fifty-four.10)four
8、hundred.11)sixth.12)thirteenth.13)eleventh.14)hundredth.15)ninety-sixth.16)Onehundredandthird.firstsecondthirdninthtw
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