最实用最全的-小学英语语法数词_精品文档PPT格式课件下载.ppt

1、13 thirteen 15-fifteen 18eighteen 3）2090整十位数,以-ty结尾。20twenty 30-thirty 40forty 50fifty 80-eighty 60-sixty 70-seventy 90ninety 4）2199，两位数，十位与个位之间有“”。21 twentyone 55 fiftyfive 99 ninetynine,5）101999，三位数，百位与十位/个位之间加and。101 one hundred and one 840 eight hundred and forty 693 six hundred and ninety-three

2、,1，000以上数目,从右向左每三位用“，”分开,分别读为 thousand,million,billion。,6，500，431，7 2 9,and,billion,million,thousand,hundred,4,1）13,first,second,third。2）419,相应基数词+th,特殊拼写:fifth,eighth,ninth,twelfth。3）2090,y变成ie+th,如twentieth。4）2199,只把个位的基数词变成序数词 如twenty-first。5）序数词缩写-数字最后两字母 如1st,2nd,3rd,4th,二.序数词,5,（序数词构成规律）,基变序,有

3、规律,一、二、三，特殊记，面目全非要注意，加th从4起，八少“t”，九去“e”，“ve”要用“f”替，（five,twelve）见“y”变成“i”和“e”，词尾再加“th”，（twenty,thirty,ninety）若是遇到几十几，只变个位就可以。序数词缩写记清楚,数字后跟两字母。8th,1.表示倍数,2.表示分数,3.表示百分数,4.表示小数,5.表示四则运算,6.表示编号,7.表示温度,8.表示长宽高,9.表示货币,10.表示年、月、日、时刻,三.数词的应用,1.表示倍数,例：Twice three is six.三的两倍是六。five times three is fifteen.三的

4、五倍是十五。,3,2）有些分数可用 half 和 quarters 表示：例：1/2 a（one）half 1/4 a（one）quarter 3/4 three quarters 半年 half a year 半小时 half an hour一年半one and a half years（one year and a half）,1）分子大于1时，分母序数词的复数形式（加-s）例：2/3 two-thirds 3/4 three-fourths,2.表示分数,例：0.7 zero point seven 326.1 three hundred and twenty-six point one

5、 3.1415926 three point one four one five nine two six,3.表示小数,例：0.7%zero point seven percent 26%twenty-six percentForty percent of the apples on the tree are green.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=7 three plus four equals seven.4-3=1 four minus three equals one.43=12 four times three is twelve.124=3 t

6、welve divided by three makes four.,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,The First Lesson（在句子中不大写）Lesson One,the thirty-second pagePage 32/Page Thirty-two,Room 305,Bus No.12,7.表示（摄氏）温度,fifty degrees centigrade（50摄氏度）,8.表示长、宽、高,例：50米长 fifty meters long 21米宽 twenty-one meters wide 3米高 three meters hig

7、e.1.8米深 tone point eight meters deep,9.表示货币,注意：人民币yuan（元）没有复数形式 美元：dollar dollars 英镑：pound pounds,10.表示年、月、日、时刻,例：1949 nineteen forty-nineJanuary April July October February May August November March June September December9月10日 September the tenth10月1日 October the first,What is the time?,six/six oc

8、lock,seven fifteen/a quarter past seven,nine thirty/half past nine,six forty/twenty to seven,nine twenty/twenty past nine,four o five/five past four,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 hundred.11）sixth.12）thirteenth.1

9、3）eleventh.14）hundredth.15）ninety-sixth.16）One hundred and third.,first,second,third,ninth,twelfth,twentieth,eighty-eighth,sixty-second,fifty-fourth,four hundredth,six,thirteen,eleven,hundred,ninety-six,One hundred and three,2.根据提示完成下列英文句子。,1）6:30-what time is it?-it is.2）4月1日 Today is.3）2+1=3 is th

10、ree.,3.选择填空。,1）of the visitors are foreibners.A.Three five B.Three-fifth C.Three-fifths D.Third five2）There are people on the square.A.hundreds B.hundred of C.hundreds of D.five hundreds3）The teacher asked us to write a composition in one hour.A.three-hundred-words B.three hundred of words C.three h

11、undreds-words D.three hundred word,April 1st,six thirty/half past six,two plus one,C,C,D,4）-What is Charlie in?-He is in.A.row,row Four B.row,Row Four C.rows,four row D rows,row Four.5）How much is five six?-Eleven.A.plus B.minus C.times D.divided,4.写出下列数字的英语读法。,1）4/7.2）0.28.3）1/4.4）3.14.5）30%.5）0.7%.,B,A,foue-sevenths,a quarter,zero point two eight,three point one four,zero point seven percent,thirty percent,