中考英语复习数词课件.pptx

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1、数词数词表示数目多少的词叫：_Most students exercise three or four times a week.表示顺序的词叫：_Take the escalator to the second floor and turn right.基数词基数词序数词序数词1.Two of them went out.2.He chose the second.3.The third person is his girlfriend.4.What I want to get is the first.5.Is there a room left for us two?主主语宾语定定语表表

2、语同位同位语100100以内的基数词以内的基数词1 one11 eleven20 twenty2 two12 twelve30 thirty3 three13 thirteen40 forty4 four14 fourteen50 fifty5 five15 fifteen60 sixty6 six16 sixteen70 seventy7 seven17 seventeen80 eighty8 eight18 eighteen90 ninety9 nine 19 nineteen10 ten100100以内的基数词以内的基数词100 one hundred 一百1,000 one thous

3、and 一千1,000,000 one million 一百万1,000,000,000 one billion 十亿十几的结尾是十几的结尾是_;_;几十的结尾是几十的结尾是_;_;两位数中间要有两位数中间要有_;_;三位数，百位十位间有三位数，百位十位间有_;_;十位个位间有十位个位间有_;_;teenty连字符连字符-and连字符连字符-大数字大数字142，490，038，234thousandmillionbillionHow to read 849，003，495，349 in English?基数词的用法基数词的用法five thousandten millionthirty bil

4、liontwenty hundredthousands of millions ofbillions ofhundreds of 在表示一个具体的数目时，hundred,thousand,million后面都不能加-s。在表示一个不确定的数目时，应用hundreds,thousands,millions加介词of来表示：数以百计/数以千计/数以百万计。基数词的用法基数词的用法1.Jim is a five-year-old boy.2.He will take part in the boys 800-meter race.基数词可以与名词构成复合词，相当于形容词，作定语。在这种复合词中，名词

5、不能用复数。序数词序数词基变序，有规律，结尾加上基变序，有规律，结尾加上thth123123，特殊记，结尾字母，特殊记，结尾字母tddtdd八去八去t t，九去，九去e e，veve要用要用f f替替整十变化需注意，把整十变化需注意，把y y变变ieie，结尾加上，结尾加上thth如果遇到几十几，只变个位就可以如果遇到几十几，只变个位就可以序数词的用法序数词的用法1.This is the first day at Beijing Sunshine School.序数词前面一般要用定冠词the2.She was born in Chongqing,but Chengdu has become

6、her second hometown.序数词前已有物主代词、指示代词或名词所有格修饰时，不能再用定冠词the。1.1.时刻的表达时刻的表达时刻刻顺读法法逆逆读法法7：007：101：584：30seven oclock-seven ten ten past sevenone fifty-eighttwo to twofour thirtyhalf past four9:058:5513:1512:456:301.nine five 2.five past nine1.eight fifty-five 2.five to nine1.one fifteen 2.a quarter past o

7、ne1.twelve forty-five 2.a quarter to one1.six thirty 2.half past six2.2.日期表达日期表达某年某年1990读作读作:nineteen ninety1900读作读作:nineteen hundred2009读作读作:two thousand and nine2000读作读作:two thousand 年份用基数词表示，通常把它分为两部分读。2.2.日期表达日期表达某年某年某月某月March 2008 读作读作:March,two thousand and eight 某年某月的表达是月在前，年在后。7月月9日日月份月份+序数词

8、序数词序数词序数词+月份月份写：写：July 9th读：读：July the ninth写：写：9th July 读：读：the ninth of July2.2.日期表达日期表达某月某日某月某日2.2.日期表达日期表达某年某月某日某年某月某日1998年年10月月2日日写作写作October 2nd,1998 或者或者 2nd October,1998读读作：作：October the second,nineteen ninety-eight 或或 the second of October,nineteen ninety-eight 年、月、日同时出现时，可以表达为月日，年或日月，年。3.3

9、.编号表达编号表达5号号名词名词+基数词基数词序数词序数词+名词名词Number Five/Number 5the fifth number 名词和数字的首字母要大写 the+序数词+名词4.4.年龄表达年龄表达10岁岁基数词基数词+year（s）old基数词基数词-year-oldten years oldten-year-oldWhen he was in his thirties,he became a famous poet.in ones 基数词中整十数词的复数，表示在某人几十岁时。The flying disk was invented by college students in

10、 the 1950s.表达年代应用in the+带有整十的年份的复数或-s形式，如in the 1990s/in the 1990s:在20世纪90年代5.5.货币表达货币表达9.80读作：读作：nine yuan eighty fen 9元元8角角7.37读作：读作：seven pounds thirty-seven pence 7英镑英镑37便士便士$28.5读作：读作：twenty-eight dollars fifty cents28美元美元50美分美分货币表达通常是用符号加基数词6.6.小数、分数和百分小数、分数和百分数表达数表达3.9读作：读作：three point nine2.

11、15读作：读作：two point one five小数只能用基数词表达，其中小数点读作point，零读作zero或o，小数点前的数与前面所讲的基数词的读法相同，小数点后的数要逐个读。1/3读作读作one third2/5读作读作two fifths分数由基数词和序数词组成。分子用基数词，分母用序数词，分子大于1时，分母要在序数词后加s6.6.小数、分数和百分小数、分数和百分数表达数表达1/5读作读作a（one）fifth读作读作a half当分子是1时，可以用one也可以用a；当分母是2时，常用half；当分母是4时，常用quarter读作读作a quarter读作读作three quart

12、ers表示带分数时，应在分数之前加基数词和and6.6.小数、分数和百分小数、分数和百分数表达数表达5%读作读作five percent 86%读作读作eighty-six percent百分数是由“基数词+percent”表示的7.7.倍数的表达倍数的表达在英语中，表示倍数时，在英语中，表示倍数时，once表示一倍；表示一倍；twice表示两倍；表示两倍；三倍或三倍以上用三倍或三倍以上用“基数词基数词+times”。Her house is twice bigger than yours.This river is three times longer than that one.倍数+形容

13、词或副词的比较级+than7.7.倍数的表达倍数的表达The box is three times as heavy as that one.This table is twice as long as that one.倍数+as+形容词或副词原形+asThey spend three times as much on clothes as on education.He has got three times as many books as his sister.倍数+as+many/much+as7.7.倍数的表达倍数的表达7.7.倍数的表达倍数的表达This room is thre

14、e times the size of mine.Their building is twice the height of ours.倍数+the size/weight/height/length/age of7.7.倍数的表达倍数的表达8.8.约数的表达约数的表达1.Then he leaves for school at around six thirty.He is very tall,almost 1.8 meters.表示“大约”常用about,nearly,almost,some,around等。2.It is played by more than 100 million p

15、eople in over 200 countries including China,where basketball has been played in parks,schools,and even factories.表示“超过”，用over或more than3.How often do you exercise?Less than three times a week.表示“少于”，用less than8.8.约数的表达约数的表达4.Could you lend me your bike for an hour or so?表示“左右”，用or so.9.9.算式的表达算式的表达3+5=8 Three plus/and five is/equals eight.5-3=2 Five minus three is/equals two.2 5=10 Two times/multiplies by five is/equals ten.9 3=3 Nine divided by three is/equals three.加用plus或and减用minus乘用times或multiplies by 除用divided by谓语动词用单数