八上U2数词练习.doc

八上U2 数词的用法考点一 基数词 数字基数词形式 例词 0-12 各自独立zero 0; one 1; nine 9; twelve 12 13-19 3-9+重读teen结尾特殊：thirteen 13; fifteen 15; eighteen 18一般加teenfourteen 14; sixteen 1620-90整十位数以ty结尾twenty 20; thirty 30; forty 40; fifty 50; sixty 60;seventy 70; eighty 80; ninety 90两位数几十几整十位数-个位数twenty-one 21; thirty-five 35; ninety-eight 98三位数几百几hundred and+两位数 seven hundred and eighty-five 785; two hundred and ten 210多位数 从右向左数起每隔三位数加一个逗号依次为thousand(千)million(百万)billion(十亿), 逗号中间三位数 76, 832, 154, 968 seventy-six billion eight hundred and thirty-two million one hundred and fifty-four thousand nine hundred and sixty-eight考点二 序数词 数字 序数词变化规则例词1、2、3不规则变化 first第一; second第二；third第三4-19 基数词词尾加th 特殊fifth 第五 eighth 第八ninth 第九twelfth第十二 fourth第四；nineteen十九 20、30 90 ty变为tie再加th twentytwentieth第二十ninetyninetieth第九十两位数或多位数整数除外只变个位数 (hundred, thousand等只在词尾加th) twenty-third 第二十三one hundred and fifty-ninth 第一百五十九hundredth 第一百 【温馨提示】 (1)序数词要加定冠词the，但若序数词前有形容词性物主代词或名词所有格时省略the。 Tom made the mistake for the third time. = It was Toms third time to make the mistake. 这是汤姆第三次出错。 (2)序数词前加a/an表示“又一；再一”。 Even though the Greens have 3 children, they still want a fourth one. 尽管格林夫妇已有3个孩子,可他们还想再要一个。 (3) 序数词可以用阿拉伯数字和序数词拼写的最后两个字母简写。例如1st第一2nd第二3rd第三4th第四。 考点三 数词应用 名称 表 达 法 例 词 年份 特别提示:年份的读法前两位数, 再读后两位数, 读日时要加the可先读1997年3月21日March the twenty-first, nineteen inety-seven 日期月日年 日用序数 年用基数日月年 the+序数词+of+月+年 2007年3月21日the twenty-first of March, two thousand and seven年代 in+the+数词的复数形式在18世纪20年代in the 1720s/1720s读作:in the seventeen twenties时刻时在前,分在后,按基数词读10: 15 ten fifteen分在前,时在后 “几点过几分”用past分钟数须小于半小时,包括半小时在内7: 05 five past seven 7:15 fifteen past seven 7: 30 half past seven“几点差几分”用介词to,但分钟数须在半小时以内,不包括半小时在内7: 57 three to eight 11: 46 fourteen to twelve 2: 40 twenty to three几刻钟一刻钟:a quarter 三刻钟:three quarters 九点一刻:a quarter past nine 编号 给东西编号时:序号在前用序数词lesson twelve=the twelfth lesson序号在后用基数词分数分子用基数词:分母用序数词 记忆口诀:分子基,分母序分子大于1,分母加s特别提示:通常二分之一用 a/one half表示。四分之一用 a/one quarter表示，三分之一one third two thirds four fifths seven tenths带分数当分数前面带有整数时，要用连词and连接 two and two thirds倍数 英语用twice表示两倍,两倍以上用基数词加times表示twice两倍three times三倍forty times四十倍中考真题:. 用所给数词的适当形式填空 1. I have tried three times, and the teacher asks me to have a _ (four) try. 2. (Even a child knows September is the _ (nine) month of a year. 3. Ive bought a present for my fathers _ (forty)birthday. 4. Mr. Smith lives on the _ (six) floor. 5. Climb up to the _ (eleven) floor, and you can enjoy a better view. . 单项选择 1. There are _ days in a week and Tuesday is _ day of the week. A. seven; third B. seven; the third C. seventh; three D. the seventh; three 2.There are 60 students in my class and 44 of them use weibo very often. That means about _ of your classmates are weibo users, right? A. half B. one third C. two thirds D. three quarters 3. Eight _ students in our school are from countryside. A. hundreds B. hundred C. hundreds of D. hundred of 4. He wrote his _ novel when he was _. A. five; fifties B. fifth; fifty C. fifth; fiftieth 5. July 1st of this year is _ birthday of CPC (中国共产党). A. ninety B. the ninety C. the ninetieth 6. Kangkang is a school boy. He got a good gift on his _ birthday. A. fourteenth B. fortieth C. the fortieth 7. I dont believe that this _ boy can paint such a nice picture. A. five years old B. five-years-old C. five-year-old 8. About _ of the students in Grade Nine this year were born in the _. A. three five; 1996 B. three fifths; 1990s C. third fifth; 1997 D. third fifths; 1990s 9.If a=4, b=5, whats the answer to the question “a+2ab+1=? ” _. A. Forty-fifth B. Forty-five C. Twenty-three D. One hundred and twenty-one 10. Do you have enough students to clean the laboratory? No, I think we need _ students. A. another B. two others C. more two D. two more