《中考备考 数词 专项讲解.docx》由会员分享，可在线阅读，更多相关《中考备考 数词 专项讲解.docx（5页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、学校：班级：姓名：专项四数词考点一基数词1.基数词构成(1)0 12 单独记。如：zero, one, two, three 等。(2)13一19 的词尾都是 teen。如：fourteen, seventeen 但 13thirteen, 15一fifteen, 18eighteen 需要特殊记。(3)20, 30, 40等整数的基数词均以ty结尾。如：20一twenty, 30一thirty, 40一forty, 50fifty, 80一eighty 等。(4)几十几”要力口连字符号如：48一forty-eight, 97一ninety-seven 等。(5)“几百几十”或者“几百几十几”
2、在“百”后加and。如：156one hundred and fifty-six, 509-five hundred and nine 等。(6)四位数或者四位数以上的基数词的拼写规律：用逗号从右往左每三位加 一个逗号，第一个逗号读作thousand(千)，第二个逗号读作million(百万)， 第三个逗号读作billion(十亿)，hundred后另U忘了“and”。如：3, 610 = three thousand six hundred and ten; 94, 295 = ninety-four thousand two hundred and ninety-five；274, 350
3、=two hundred and seventy-four thousand three hundred and fifty 等。2.用法(1) hundred, thousand, million, billion 词尾后是否加s表示概数、不确切的数字时，加s”,与of构成短语,即hundreds of成 百上千的，thousands of成千上万的，millions of数以百万的，billions of 数以十亿的。表示确切数字，用在具体数字之后时，不加“s。例|如：two hundred trees (2)表示不确切的岁数时，常用几十的复述形式。例如：He become a profe
4、ssor in his thirties.他三十多岁是成 了 教授。(3)基数词数量表示法表示长、宽、高等，用基数词+单位词(meter, foot, inch等)+形容词（long,wide,high等）表示，或者用基数词+单位词+in+名词（length,width,height,weight 等）表示。例如：two meters long或 two meters in length 2 米长表示时间、距离时，使用含数词的名次所有格形式作定语。five minutes;walk步行5分钟（的距离）Ifs three kilometers distance from our campus t
5、o the Bell Tower.从我们校 园到钟楼有三千米远。表示温度时，用below zero表示零下温度，温度用“基数词+degree （s） +单位词（centigrade摄氏度或Fahrenheit华氏度）”表示。例如：thirty-six degrees centigrade 或 3636 摄氏度Four degrees below zero centigrade 或-4 零下 4 摄氏度“数词+名词（+形容词）”复合结构作定语时，其中的名词用单数形式， 各部分间要用连字符“来连接。She is a five-year-old girl.她是一个 5 岁的女孩。Its a five
6、-minute walk from the library to the playground.从图书馆到操场需 要走五分钟。表示“比大（或小）几倍”的说法。This room is three times bigger than that one.这个房间比那个（房间）大三倍。考点二序数词1.构成序数词用来表示顺序，一般在基数词后加后缀-th构成，但也有特殊的 情况。基数词变序数词，例 one-firsttwosecond threethird.口诀：基变序有规律，一，二，三特殊记，词尾字母tdd,八去t,九去e,ve要用f替，整十基数变序数，记得把y变七 若是遇到几十几，只变个位就可以。2
7、.序数词的用法序数词通常加定冠词the,单序数词前已经有my, his, her等词时，则不 加冠词。例如：The first day of a week is Sunday.一周的第一天是星期日。This is my first day in my new school.这是我在新学校的第一天。如果序数词前出现不定冠词a或an,则表示“再一，又一”。Well get over it a second time.我们将再检查一遍。Weve tried it three times. Must we try it a fourth time?我们已经试过三遍了，必须再试一次(即第四次)吗？分数的
8、表示。分子用基数词，分母用序数词。分子大于1,分母要用复数形式。例 如：1 /3 ： one third 1 /2 ：one half 2/3: two thirds注意：当分数用于不可数名词或代词(指代不可数名词)前作主语时，谓语 动词用单数形式。例如：三分之一的面包已卖完。One third of bread has been sold out.五分之二的学生是男生。Two fifths of the students are boys.题组训练试一试你一定行！1. (2019 台州)December is the(twelve) month of a year.2. (2019 扬州)T
9、he old man started to learn how to surf the Internet in his (eighty).3. There are five people in Dale!s family. They live on the(nine) floor.4. He won the(three) prize in the writing competition. But he thought he could have done better.1. 1 always feel sleepy on the(one) class after a long holiday.
10、6. It is the(four) time that Mary has been to Madrid. She knows the city very well.7. Tomorrow is her(five) birthday. What present are you going to buy for her?8. Yellow River is the(two) longest river in China.9. Try to exercise at least(one) a week. Its better than you do nothing.拓展练习1. May 4th, 2
11、019 was the anniversary of the May FourthMovement.A. hundredB. hundredthC. seventyD. seventieth2. The highspeed train travels about 300km/h, and we can also say it travels aboutA. 63m/sB. 83m/sC. 30m/sD. 33m/s3. Suppose you have eleven pens in your hand, and your sister asks for three. Then you have pens.4. Staying in a hotel for a day costs as much as renting in thecountry for a week.A. twice B. two times C. second D. two专项四数词参考答案题组训练1. twelfth 2. eighties 3. ninth 4. third 5. first6. fourth 7. fifth8. second 9. once拓展训练LB 2. B 3.8/eight 4. A