中考英语语法复习课件--数词.pptx

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1、数 词概念：表示数目多少或先后顺序的词叫作数词。数词基数词序数词主要用法与考点表达法 句法功能添加您的标题Enter the text content directly here,the text format will not change.Enter the text content directly here,the text format will not change.一、基数词（一、基数词（cardinal numbers）概念：概念：表示数目的词称为基数词。1、基本形式：、基本形式：88,696,787,656,2004,1804,1600 2、构成方法、构成方法:（1）从112

2、分别由从one到 twelve 12个各不相同的词表示 （2）从13-19均以后缀teen结尾。（3）从2090的整十数词均以后缀-ty结尾。表示“几十几”时,个位和十位之间需加 连字符,如 twenty-one,thirty-two,forty-three等（4）百位数：个数基数词形式加“hundred”,表示几百,在几十几与百位间加上and。E.g.320 three hundred and twenty（5）千位数以上：）千位数以上：从数字的右端向左端数起,每三位数加一个逗号“,”。从右开始,第一个“,”前的数字后添加 thousand,第二个“,”前面的数字后添加 million,第三

3、个“,”前的数字后添加 billion。然后一节一节分别表示,两个逗号之间最大的数为百位数形式。相关短语：相关短语：one/two hundred、thousands of sth tens of thousands of数以万计注：注：hundred,thousand,million,billion的用法的用法 1)当放在具体的数字后边时,表示具体 的“百、千、百万、十亿”时,不能用复数形式,可以直接修饰名词复数,如:200个学生:two hundred students 2)当表示大概的“几百、几千、几百万几十亿”时,前边不能用具体的数字或表示不确切时,用“复数形式+of”结构 数百学生

4、hundreds of students二、序数词（二、序数词（ordinal numbers）概念：概念：表示顺序的词称为序数词。1、基本形式：、基本形式：1,2,3，特殊记；8去t,9少e;ve要用f替;见y变成i和e,后加th莫忘记；若是遇上几十几，只变个位就可以。2、构成特点：、构成特点：表顺序与the连用；序数词前可以用形容词性物主代词或名词的所有格修饰时，此时序数词前不用加定冠词the.与a/an连用表“又一，再一”e.g.Well have to do it a second time.3、序数词的用法和考点、序数词的用法和考点 用法：表示用法：表示“第几次第几次”，前面要加，前

5、面要加the The first I saw you,I fell in love with you.用法：分数用法：分数 You told me that one third od your heart belongs to me.But I want to tell you that two thirds of my heart belongs to you.I always love you more than you do.用法：具体日期用法：具体日期 October 21st is your birthday.However,I forget to prepare gifts for

6、 your 18th birthday.用法：序数词前加用法：序数词前加a表示表示“又一，再一又一，再一”；做合成；做合成adj.前加前加a I hope you can give a second chance.I will buy a second-hand bookstore.Then I am the boss.You are the boss of the boss.三、表达法三、表达法(时刻、日期、分数、小数、百分数、编号、概数、年龄、数目、时刻、日期、分数、小数、百分数、编号、概数、年龄、数目、倍数倍数)1、时刻表达法、时刻表达法 .表示几点钟用基数词加可以省略的oclock 5

7、:00 读作 five oclock 或 five .表示几点过几分，在分钟后加past，再加小时 five past seven 七点过五分 half past six 六点半 .表示几点差几分，在分钟后面加to，再加小时 ten to eight 差十分八点（七点五十分）a quarter to twelve 差一刻十二点（十一点四十五分）*在日常生活中，常用下列简单方法表示时间。在日常生活中，常用下列简单方法表示时间。以小时、分种为单位分别读出数字。6:31 读作 six thirty-one 10:26 读作 ten twenty-six 2、日期和年份表达法、日期和年份表达法 年份用

8、基数词表示，一般写为阿拉伯数字，读时可以以hundred为单 位，也可以以世纪、年代为单位分别来读。1949 读作 nineteen hundred and forty-nine 或 nineteen forty-nine 1800 读作 eighteen hundred表示在哪一年，一般在年数前加介词in，使用year时，year放在数前。in the year two fifty-three B.C.在公元前253年 但是，通常采用in加表示年份的阿拉伯数字。月份，在哪个月用介词in加第一个字母大写的月份词表示。例如：in May在五月；in July在七月。为了简便起见，月份与日期连用时

9、，月份常用缩写形式表示。缩写形式除May，June，July外，其它的月份都由其前三个字母表示，但September除外。JanuaryJan.一月 FebruaryFeb二月8表示不具体、不确切的时间，如世纪、年代、年份、月份时，用介词in表示，表示具体确切的某一天用介词on表示通常情况下morning，afternoon，evening等词前用介词in。但是，当这些词前后有一修饰限定的词作为定语，把它们限定为某一天早晨、下午或晚上时，介词in应改为on。这里的修饰限定词可以是介词短语、名词、形容词、定语从句等。e.g.On a cold morning，the old man died l

10、onely in his house 在一个寒冷的早晨，这个老人孤独地死在自己的房子里。The girl was sent to hospital on the night of March 20.这个姑娘在三月二十日的夜里被送进了医院。3、数目表达法、数目表达法 e.g.1000 books4、次、次/倍数表达法倍数表达法 e.g.3 times5、分数表达法、分数表达法 分数由基数词和序数词合成，分子用数词，分母用序数词。分子大于一时，分母的序数词用复数形式。1 e.g.A quarter of the workers are women.Three fifths of her money

11、 is spent on books.6、小数表达法、小数表达法 小数点读point，零读o或zero，小数点后的数字按个位基数词依次读出。0.6one and two thirdsone(a)quarterone(a)halfzero point six7、百分数表达法、百分数表达法 百分数由percent表示。e.g.55%0.12%The output of cotton went up by 20 percent.The price was reduced by 18 percent.90%of most food is water.Fifty percentzero point on

12、e two percent 8、编号表达法、编号表达法 e.g.the first class,Bus No.9,Class Two,Grade Nine,Page32,Room101.149Nanjing Road 9、概数表达法、概数表达法 e.g.thousands of,in his early twenties,in the 1930s,in her forties.10、年龄表达法、年龄表达法 e.g.9 years old,a nine-year-old girl,at the age of 9四、句法功能四、句法功能 1、作主语、作主语 e.g.Eight is my luck

13、y number.The third of the month is a holiday.2、作定语、作定语 e.g.That store sells several hundred dresses.It was the third time I had been there.3、作表语、作表语 e.g.Five plus seven is twelve.You will be the first to speak.4、作宾语、作宾语 e.g.She stopped at the first of the streets.The dress cost me several thousand.5

14、、作同位语、作同位语 e.g.We two can help you.数词练习题数词练习题1.（2012年苏州中考试题）The chairperson received about three _ applications to join the Blind Watching Club.A.hundred B.hundreds of C.hundred of D.hundreds2._ the students are girls A Three hundred B.Three hundred of C.Three hundred D.Three hundreds of3.(2011连云港中考

15、试题)-How amazing the noodle is!-Yes it is _,and breaks the Guinness World Record as the longest handmade noodle.A.1704-meter-long B.1704-meters-long C.1704 meter long D.1704 meters long 4.(2012江苏中考试题)He is only _ _ boy.He isnt old enough to take care of himself.A.a 8-year-old B a 8-years-old C.an 8-y

16、ear-old D.an 8-years-old5.(2010兰州中考试题)I think _of the materials listened to at the beginning of the exam _ easy.A.three fourths,is B.third four,are C three fourths,are D three fourth,are ABcDD6.(2012杭州中考试题)We have two ears and one mouth so that we listen _ we speak.A as twice much as B twice as much

17、 as C.as much as twice D.as much twice as 7.(2011青海中考试题)_ of the sand in that district _ covered with trees and grass.A.Two fifths,are B.Two fifth are C.Two fifth,is D.Two fifths,is8.(2012铜仁中考试题)About_ of the students in Grade Nine were born in the _.A.three five:1996 B.three fifths:1990s C three fi

18、fth:1997 D third fifths:1990s 9.(2012自贡中考试题)I hear your friend is visiting Sanya again,Is it the second time for him?-Yes,and he will come for _ time next spring.A.a third B.a second C.the third 10.(2011达州中考试题)lf 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-oneBDBABThank you!