初中英语总复习之数词

三 数词 2011 7 21 1 数词分为基数词和序数词 基数词表示数目 序数词表示顺序 一 基数词序数词对照表 1onefirst1st 2twosecond2nd 3threethird3rd 4fourfourth4th 5fivefifth5th 6sixsixth6th 7sevenseventh7th 8eighteighth8th 9nineninth9th 10tententh10th 11eleveneleventh11th 12twelvetwelfth12th 13thirteenthirteenth13th 14fourteenfourteenth14th 15fifteenfifteenth15th 16sixteensixteenth16th 17seventeenseventeenth17th 18eighteeneighteenth18th 19nineteennineteenth19th 20twentytwentieth20th 21twenty onetwenty first21st 30thirtythirtieth30th 40fortyfortieth40th 50fiftyfiftieth50th 60sixtysixtieth60th 70seventyseventieth70th 80eightyeightieth80th 90ninetyninetieth90th 100one hundredhundredth100th 1000one thousandthousandth1000th 二 基数词 1 几十几的基数词的十位数与个位数之间要用连字符 连接 如 eighty five 85 twenty six 26 2 三位数的基数词须在百位和十位 若无十位则和个位 之间用 and 连接 如 three hundred and sixty five 365 two hundred and six 206 3 当 hundred thousand million billion 前有具体数字或 several 时 必须用单数形式 如 several hundred year s ago 几百年前 two thousand students 两千个学生 4 hundreds of thousands of millions of 前不能用具体数字 表示 成百 成千上万 成百万 如 Millions of people come to visit the History Museum every day 3 表示 几十岁 in one s 基数词复数 Eg He died of heart disease in his sixties 4 表示 年代 in the 基数词复数 Eg It happened in the 1980s 三 数词 2011 7 21 2 5 表示年龄 如 He is seven years old He is a seven year old boy He is a boy of seven 6 表示编号 如 Room 301 Grade Nine Class Two 三 序数词 1 多位数的基数词变成序数词时 只需将末位基数词变成序数词 前边的基数词不变 如 forty two 42 forty second 第 42 nine hundred 900 nine hundredth 第 900 2 序数词前一般要用定冠词 the 如果序数词前用 a 或 an 时 则表示 又一 再一 如 Though he had failed twice he wanted to try a third time The little monkey had had three apples and he wanted to eat a fourth one 3 表示世纪 in the 序数词 century 如 Many important inventions were invented in the twentieth century 4 表示日期 顺序为月 日 年 年用基数词 日用序数词 如 1987 年 4 月 20 日 写成 20th April 1987 读成 the twentieth of April nineteen eighty seven 5 表示编号 如 the sixth lesson in the fifth line 四 分数和百分数表达法 1 分数 1 分数的分子用基数词 分母用序数词 如 one fifth 五分之一 one tenth 十分之一 2 当分子大于 1 时 分母用序数词的复数 如 two thirds 三分之二 five eighths 八分之五 3 当分子是 1 时 可以用 one 也可以用 a 如 a second one second a third one third 4 当分母是 2 和 4 时 分别可以用 half 和 quarter 代替 如 a half 二分之一 three quarters 四分之三 5 带分数的整数和分数之间须用 and 连接 如 three and a half 三又二分之一 five and a quarter 五又四分之一 nine and five twelfths 九又十二分之五 6 表示 某一整体的几分之几 时 使用 分数分数 of the 名词名词 结构 如 Half of the students are Chinese 一半的学生是中国人 She ate one third of her food yesterday 她昨天吃掉了食物的三分之一 2 百分数 百分数用 percent 表示 如 forty percent 百分之四十 three percent 百分之三 3 当分数 百分数修饰可数名词的复数时 谓语动词用复数形式 当分数 百分数修饰不可数名词时 谓语动词用单 数形式 如 Three fourths of the students in my class are interested in English Two thirds of the water on the earth is sea water 五 倍数表达法 1 表示 几倍大小 长短 数量 由 倍数 the size length amount 结构组成 如 The earth is forth nine times the size of the moon 2 表示 比 大几倍 由 倍数 形容词 副词 比较级 than 被比较部分 结构组成 如 This box is three times bigger than that one 3 表示 是 倍 由 倍数 as 形容词 as 被比较部分 结构组成 如 Our factory is twice as big as theirs 六 算数表达法 1 加用 plus and add 表示 等于用 is make equal 表示 Two and four is six 2 4 6 2 减用 minus 表示 Nine minus three equal s six 9 3 6 3 乘用 times 表示 Four times five is are twenty 4 5 20 三 数词 2011 7 21 3 4 除用 divided by 表示 Eight divided by four is two 8 4 2 练习题 1 Please wait here I ll be back in hours A two and half a B two and a half C half and two D two a half 2 China is larger than the United States A one six B one sixth C one sixes D a sixths 3 Two died of cold last winter A hundreds old people B hundreds old peoples C hundred old people D hundred old peoples 4 999 reads nine hundred A and ninety ninth B and ninety nine C ninety and nine D and nine nine 5 Our teacher told us to write a composition A two thousand word B two thousand words C two thousands words D two thousands word 6 Henry is tallest in their class A three B the three C third D the third 7 Would you like to try time A two B second C a two D a second 8 The library in the school isn t large There re only books in it A six thousand five hundred and forty one B six thousands five hundred forty and one C six thousand five hundreds and fourth one D six thousands and five hundreds and forty one 9 of the world s books and newspapers are written in English A Three quarter B Three of quarters C Third fourths D Three fourths 10 In Marx began to learn Russian A a 1870 B the 1870 C the 1870 s D his 1870 11 Today we re going to learn the lesson A twenty B 20 C twentieth D twentyth 12 How deep is the hole It is A four metre deep B four metres deep C four metre deep D four metres deep 13 By the end of last year we had planted about five trees A hundred B hundreds C hundred of D hundreds of 14 We ve planted trees in the centre of our city this year A hundred B two hundreds C hundred of D hundreds of 15 books must be produced for the children A Many thousands B Many thousands of C Many thousand of D Many thousand 16 There are days in June and day is Children s Day A thirteen first B thirty the second C thirty the first D thirteen the first 17 trees are planted every year A Thousand B Thousand of C Thousands D Thousands of 18 When spring comes trees are planted in our city A millions of B a million of C two millions D million of 19 The number of the girls in our school more than six A are hundreds B is hundred C are hundred D is hundred 20 The world population will past billion by the end of century A six twenty B sixth twentieth C six the twentieth D the sixth the twenty 21 John began to learn Japanese by himself in A the fifty B the fifties C his fifty D his fifties 22 When were you born I was born 三 数词 2011 7 21 4 A in 1988 June 6 B on June 6 in 1988 C in June 6 1988 D on June 6 1988 23 What s the English for 12 30 It s A twelve and thirty B one to thirty C twelve thirty D a half past twelve 24 of them are dining at school A Twelve B Twelfth C The twelve D the 12th 25 It s 7 17 is read A seven and seventeen B seven seven C seven one seven D seven seventeen 26 Four two is two A plus B minus C times D divided by 27 Three five is eight A plus B minus C times D divided by 28 Three seven is twenty one A plus B minus C times D divided by 29 Forty two seven is six A plus B minus C times D divided by 30 There are days in a year A three hundred sixty and five B three hundred and sixty five C three hundreds and sixty five D three hundred sixty five 31 There are students in that school A two thousand eight six B two thousand eighty six C two thousand and eighty six D two thousands and eighty six 32 It took me to get there A two hours and a half B two hours and half C two hour and a half D two hour and half 33 September is month of the year A the nineth B the ninth C nineth D ninth 34 Plea