1、数词1 数词的分类2 基数词和序数词的构成与用法3 其他数词的用法目录数词基数词 数词的分类序数词 表示顺序表示数目one,two,threefirst,second,third0-12单独记eg.zero,one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve13-19词尾直接在数词3-9后加teen除了特殊的3个：13-thirteen,15-fifteen,18-eighteeneg.14:fourteen,17:seventeen,19:nineteen基数词的构成20-90整十位数直接在数词2-9后加ty除了特殊的
2、4个：20-twenty,30-thirty,40-forty,50-fiftyeg.60:sixty,70:seventy,90:ninety20-99之间的非整数，由十位数加个位数构成，中间用连字符号eg.21:twenty-one,98:ninety-eight基数词的构成百位数含十位数和个位数时，百位数与十位数之间用and连接，也可省略，但百位数加个位数时，and一般不省去eg.247:two hundred(and)forty-seven,202:two hundred and two四位数或者四位数以上的基数词的拼写规律是用逗号从右往左每三位加一个逗号，第一个逗号前为千(thous
3、and)，第二个逗号前为百万(million)，第三个逗号前为(十亿)billion eg.274,350two hundred and seventyfour thousand,three hundred and fifty基数词的构成表示数量eg.thirty trees 表示年龄,年份和年代eg.at the age of 15，in 2013,in his fifties,in the 1960s表示顺序eg.Class Five,Room One基数词的用法Childrens cell phones,for those between the ages of _ and _,come
4、 in colorful styles.A.6,12 B.6s,12s C.6th,12th D.6s,12s例题表示时刻past表示”几点过几分”，to表示“差几分到几点”eg.一点五十八(1:58):one fifty-eight/two to two，三点零二(3:02):three o two/two past three，九点半(9:30):nine thirty/half past nine基数词+单数可数名词作定语eg.tenminute walkten minutes walk基数词的用法What time will the game start?At ten oclock,a
5、nd now my watch says _.It wont be long.A.nine thirty-five B.thirty-five past nine C.thirty-five to ten D.nine and thirty-five例题表示确数和概数确数：基数词hundred/thousand/million/billion可数名词复数 eg.five hundred chairs概数：hundreds/thousands/millions/billions of名词eg.thousands of people another基数词名词,基数词more名词 表示在一定基础上再
6、增加一定的数量eg.two more oranges another two oranges 基数词的用法The storekeeper said to me,“If you can sell _ boxes of this candy a day,you can have this job.”A.a thousand of B.thousands C.a thousand D.the thousandth例题序数词1-3为特殊变化eg.第一：first，第二：second，第三：third序数词4-19在相应基数词词尾加-th构成除了特殊的4个：第五:fifth,第八:eighth,第九:n
7、inth,第十二:twelftheg.第四:fourth,第十:tenth,第十六:sixteenth序数词的构成序数词20-90整十位数将相应基数词词尾-y变-i,加-etheg.第60:sixtieth,第70:seventieth,第90:ninetieth20-99之间的非整数的序数词，十位数用基数词表示，个位数用序数词表示，中间用连字符号eg.第99：ninety-ninth，第72：seventy-second序数词的构成整数的百至十亿的序数词直接在基数词词尾加-theg.第一百:(one)hundredth,第一千:(one)thousandth,第一百万:(one)millio
8、nth,第十亿:(one)billionth百至十亿的序数词，若包含十位数与个位数，只将最后一个数变为序数词eg.第2425:two thousand,four hundred(and)twenty-fifth序数词的构成表示顺序在用序数词表示顺序时，在序数词前加冠词the，序数词后的名词用单数eg.the fifth floor表示日期日期按“日，月，年”/“月，日，年”的顺序表示日期可用阿拉伯数字，也可用缩略形式的序数词eg.2010年5月1日:May the first,two thousand and ten序数词的用法You can collect your prints on We
9、dnesday.Thats _.A.the May 13 B.13th for May C.13 of May D.13th May例题表示分数分子用基数词，分母用序数词；分子大于1，分母加-seg.3/4:three fourths 表示倍数“一倍”是once；“两倍”是twice；表示“三倍”或“三倍以上”的倍数用“数字times”eg.十倍:ten times序数词的用法We were given 3 months,but most of the students finished it in less than 2 months,_ the time.A.two third B.two
10、 third of C.two thirds D.two thirds of例题表时间数词前加every，表示“每一段时间或每隔一段时间”eg.每10天/每隔9天:every ten days=every ninth day与数词有关的词和短语eg.half 一半;second 秒;a quarter 四分之一;several 几个;a few 几个;a dozen 一打;a score 二十个;half an hour 半小时；two or three hourstwo hours or three 两三个小时；four and a half yearsfour years and a ha
11、lf 四年半其他数词的用法用所给词的适当形式填空1They live on the _(five)floor.2December is the _(twelve)month of the year.3On my sisters _(nine)birthday,I gave her a useful book.4_(hundred)of people come here to read books on weekends.5About two _(thousand)trees have been planted along the river.6.Three _(four)of the stud
12、ents in our class like basketball.练习fifthtwelfthninthHundredsthousandfourths用所给词的适当形式填空7How often do you go to the mountain?_(two)a month.8Wednesday is the _(four)day of a week.9Fathers Day is on the _(three)Sunday of June.10They live on the _(twentysix)floor of the tall building.11In the _(eight)picture,you can see many young trees.12He left his parents when he was _(seven)years old.练习Twicefourththirdtwenty-sixtheighthseven
