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初中英语语法数词详解(打印版)

初中英语语法数词详解(打印版)
初中英语语法数词详解(打印版)

数词

数词分基数词和序数词。基数词表示数目,序数词表示顺序。.

1.基数词

(1)基数词的具体形式如下:

A.从1——10

one,two,three,four,five,six,seven,eight,nine,ten.

B.从11——19

eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen.

注:标记为蓝色的单词特殊记忆,其他的词都是由其个位数形式后添加后缀-teen 构成。

C.从21——99

整数几十中除twenty,thirty, forty,fifty,eighty为特殊形式外,sixty,seventy,ninety都是其个位数形式后添加后缀-ty构成。表示几十几时,在几十和个位基数词形式之间添加连字符“-”

21 twenty-one

76 seventy-six

D.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.

101 a hundred and one

320 three hundred and twenty

648 six hundred and forty-eight

E.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(千),第二个“,”前面的数字后添加million(百万),第三个“,”前的数字后添加billion(十亿)。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。

2,648 two thousand six hundred and forty-eight

16,250,064 sixteen million two hundred and fifty thousand sixty-four

5,237,166,234 five billion,two hundred and thirty-seven million,one hundred and sixty-six thousand,two hundred and thirty-four(注:只有百跟十之间才有and)

(2)基数词的用法

A.基数词在表示确切的数字时,不能使用百、千、百万、十亿的复数形式;但是,当基数词表示不确切数字,如成百、成千上万,三三两两时,基数词则以复数形式出现。

There are hundreds of people in the hall.

大厅里有数以百计的人。

Thousands and thousands of people come to visit the Museum of Qin Terra-Cotta Warriors and Horses every day.

每天有成千上万的人来参观秦兵马涌博物馆。

They went to the theatre in twos and threes.

他们三三两两地来到了剧院。

B.表示人的不确切岁数或年代,用几十的复数形式表示。

He became a professor in his thirties.

他三十多岁时成为了教授。

She died of lung cancer in forties.

她四十来岁时死于肺癌。

It was in the 1960s.

那是在二十世纪六十年代。

C. 基数词的句法功能

基数词在句中可作主语、宾语、定语、表语、同位语。

The two happily opened the box.

两个人高兴地打开了盒子。(作主语)

I need three altogether.

我总共需要三个。(作宾语)

Four students are playing volleyball outside.

四个学生在外面打排球。(作定语)

We are sixteen.

我们是16个人。(作表语)

They three tried to finish the task before sunset.

他们三个人尽力想在日落前完成任务。(作同位语)

D. 基数词也可以表示顺序。只需将基数词放在它所修饰的名词之后即可,不需要添加定冠词。

the first lesson=Lesson One

the fifth page=Page 5(five)

the twenty-first room=Room 21(twenty-one)

E.时刻表示法

1. 表示几点钟用基数词加可以省略的o’clock

5:00 读作five o’clock 或five

2. 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

a quarter past eight 八点过一刻

seven past eight 八点过七分

3. 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)

twenty to six 差二十分六点(五点四十分)

★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

14:03 读作fourteen o three

16:15 读作sixteen fifteen

18:30 读作eighteen thirty

23:55 读作twenty-three fifty-five

注:时刻表上的时间大多采用24小时表示法,这样就不需要用a.m.表示上午,p.m.表示下午了。

2. 序数词

(1)序数词的主要形式:

A.从第一至第十九

其中,one— first,two— second,three— third,five— fifth,eight—eighth,nine—ninth,twelve—twelfth为特殊形式,其它的序数词都是由其相对应的基数词后面添加“th”构成。例如:six— sixth、nineteen— nineteenth.

B.从第二十至第九十九

整数第几十的形式由其对应的基数词改变结尾字母y为i,再加“eth”构成。twenty——twentieth thirty——thirtieth

表示第几十几时,用几十的基数词形式加上连字符“-”和个位序数词形式一起表

示。

thirty-first 第三十一

fifty-sixth 第五十六

seventy-third 第七十三

ninety-ninth 第九十九

C.第一百以上的多位序数词

由基数词的形式变结尾部分为序数词形式来表示。

one hundred and twenty-first 第一百二十一

one thousand,three hundred and twentieth 第一千三百二十

D.序数词的缩写形式

有时,序数词可以用缩写形式来表示。主要缩写形式有。

first——lst second——2nd third——3rd

fourth——4th sixth——6th twentieth——20th

twenty-third——23rd

其中lst,2nd,3rd为特殊形式,其它的都是阿拉伯数字后加上th。

(2)序数词的用法

A.序数词的句法功能

序数词在句中可作主语、宾语、定语和表语。

The second is what I really need.

第二个是我真正需要的。(作主语)

He choose the second.

他挑选了第二个。(作宾语)

We are to carry out the first plan.

我们将执行第一个计划。(作定语)

She is the second in our class.在我们班她是第二名。(作表语)

注:序数词在使用时,通常前面要加定冠词the;但是如果序数词前出现不定冠词a或an时,则表示“再——”,“又——”。

We’ll go over it a second time.

我们得再念第二遍。

We’ve tried it three times.Must we try it a fourth time?

我们已经试过三遍了,还必须试一次(第四次)吗?

数词综合用法

1、年月表示法

(1). 世纪可以用定冠词加序数词加世纪century表示,也可以用定冠词加百位进数加`s表示

the sixth(6th)century 公元六世纪

the eighteenth(18th)century 公元十八世纪

the 1900`s 二十世纪

the 1600`s 十七世纪

注:用百位数整数表示的世纪比这一百位阿拉伯数字本身多一个世纪。

(2). 年代用定冠词及基数词表示的世纪加十位整数的复数形式构成

in the 1930`s(in the thirties of the twentieth century或in the nineteen thirties)在二十世纪三十年代

in the 1860`s(in the sixties of the 19th century或in the eighteen sixties)

在十九世纪六十年代

In the 1870`s when Marx was already in his fifties,he found it important to study the situation in Russia,so he began to learn Russian.

在十九世纪七十年代当马克思已经五十多岁时,他发现研究俄国的形势很重要,便开始学习俄语。

(3). 表示某年代的早期、中期和晚期,可以在定冠词后,年代前添加early,mid-,late

in the early 1920`s 在二十世纪二十年代早期

in the mid-1950`s 在二十世纪五十年代中期

(4). 年月日表示法

A.年份用基数词表示,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

253 读作two hundred and fifty-three或two fifty-three

1902 读作nineteen hundred and two或nineteen o two

表示在哪一年,一般在年数前加介词in,使用year时,year放在数词之前。

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。

B. 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,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(September——Sept.)。

January——Jan.一月February——Feb.二月

March——Mar. 三月April——Apr.四月

August——Aug.八月

September——Sept.九月

October——Oct.十月

November——Nov.十一月

December——Dec.十二月

★这里缩写形式后面加点不能省略,因为它是表示缩写形式的符号。

C.日期用定冠词the加序数词表示。在哪一天要添加介词on。

National Day is on Oct. 1.

国庆节是十月一日。(读作October first)

此句也可以表示为National Day is on the 1st of October.

May 5 五月五日(读作May fifth)

也可以表示为the fifth(5th)of May

Mar. 1(st)三月一日(读作March first或the first of March)

(5). 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。

On a cold morning,the old man died lonely 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。

I don’t want to be disturbed on nights when I have to study.

我不愿意在我必须学习的晚上被打扰。

The accident happened on the afternoon of July 7.

这次事故发生在7月7日下午。

We are to have a small test on Monday morning.

星期一早晨我们将进行一次小测验。

2、加减乘除表示法

(1). “加”用plus,and或add表示;“等于”用is,make,equal等词表示。

2+3=? 可表示为:How much is two plus three?

2+3=5

Two plus three is five.

Two and three is equal to five.

Two and three make five.

Two added to three equals five.

If we add two to/and three, we get five.

二加三等于五

(2). “减”用minus或take from表示

10-6=?How much is ten minus six?

10-6=4

Ten minus six is four.

Take six from ten and the remainder is four.

Six (taken) from ten is four.

十减去六等于四

(3). “乘”用time(动词)或multiply表示

3X4=? How much is three times four?

3X4=12

Three times four is/are twelve.

Multiply three by four,we get twelve.

Three multiplied by four makes twelve.

三乘以四等于十二

(4). “除”用divide的过去分词(divided)形式表示

16÷4=? How much is sixteen divided by four?

16÷4=4

Sixteen divided by four is four.

Sixteen divided by four equals/gives/makes four.

十六除以四等于四。

3、分数表示法

(1). 分数是由基数词和序数词一起来表示的。基数词作分子,序数词作分母,除了分子是“1”以外,其它情况下序数词都要用复数形式。

3/4 three fourths或three quarters

1/3 one third或a third

24/25 twenty-four twenty-fifths

3 1/

4 three and one fourth或three and one quarter

1/2 a half

1/4 one quarter或a quarter

1 1/

2 one and a half

1 1/4 one and a quarter

(2). 当分数后面接名词时,如果分数表示的值大于1,名词用复数;小于1,名词用单数。

1 1/

2 hours 一个半小时(读作one and a half hours)

2 3/4 meters 二又四分之三米(读作two and three-fourths meters)

4/5 meter 五分之四米

5/6 inch 六分之五英寸

(3). 表示“n次方”的说法:指数用序数词,底数用基数词。

10的7次方the seventh power of ten(ten to the seventh power)

6的10次方the tenth power of six(six to the tenth power)

4 、小数表示法

(1). 小数用基数词来表示,以小数点为界,小数点左首的数字为一个单位,表示整数,数字合起来读;小数点右首的数字为一个单位,表示小数,数字分开来读;小数点读作point,o读作zero或o[ou],整数部分为零时,可以省略不读。

0.4 zero point four或point four 零点四

10.23 ten point two three 十点二三

25.67 twenty-five point six seven 二十五点六七

l.03 one point o three 一点零三

(2). 当数字值大于1时,小数后面的名词用复数,数字值小于1时,小数后面的名词用单数。

1.03 meters 一点零三米0.49 ton 零点四九吨

l.5 tons 一点五吨

5、百分数表示法

百分数用基数+percent表示

50%fifty percent百分之五十

3%three percent百分之三

0.12%zero point one two percent 百分之零点一二

这里的percent前半部per表示“每一”,cent这一后半部分表示“百”,所以百分之几中percent不用复数形式。

6、数量表示法

(1). 表示长、宽、高、面积等,用基数词+单位词(meter,foot,inch,kilogram

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。

two meters long或two meters in length 2米长

three feet high或three feet in height 3英尺高

four inches wide或four inches in width 4英寸宽

This box is 2 kilograms in weight.

这个盒子有两千克重。

The city wall of Xi’an is 12 meters wide and 12 meters high.

西安城墙是12米宽,12米高。

(2). 表示时间、距离时,使用含数词的名词所有格形式作定语。

five minutes` walk(= five-minute walk)

步行五分钟(的距离)

It’s an hour’s ride from my hometown to our university.

从我的家乡到我们大学是乘车一小时的路程。

或:从我的家乡到我们大学需要乘车一小时。

It’s three kilometers` distance from our campus to the Bell Tower.

从我们校园到钟楼有三公里远。

(3). 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摄氏或Fahrenheit华氏)表示。

thirty-six degrees centigrade或36℃摄氏36度

four degrees below zero centigrade或-4℃摄氏零下4度

Water freezes at thirty-two degrees Fahrenheit.

水在华氏三十二度时结冰。

Water boils at one hundred degrees centigrade.

水在摄氏一百度时沸腾。

★这里的单位词在人们都很清楚是什么度量制度时,可以省略。

You are 37℃.(读作thirty-seven degrees)

你是三十七度。(摄氏)

It`s seven degrees below zero.

今天是零下七度。(摄氏)

(4). 由数词和其他名词构成的名词性短语作定语时,其中的名词用单数形式,名词性短语中各部分间要用连字符“-”来连接。

It’s a five-minute walk from the library to the playground.

从图书馆到操场需要走五分钟。

She’s a sixteen-year-old girl.

她是个十六岁的女孩。

(5). 表示“比···大(或)几倍”的说法。

This room is two times bigger than that one.

这个房间比那个(房间)大两倍。

The dictionary is four times thicker than that book.

这本词典比那本书厚四倍。

My age is two times older than his.

我的年龄比他大两倍。

初中英语语法数词详解(打印版)讲课讲稿

数词 . 1.基数词 (1)基数词的具体形式如下: A.从1——10 one,two,three,four,five,six,seven,eight,nine,ten. B.从11——19 eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen. 注:标记为蓝色的单词特殊记忆,其他的词都是由其个位数形式后添加后缀-teen 构成。 C.从21——99 整数几十中除twenty,thirty, forty,fifty,eighty为特殊形式外,sixty,seventy,ninety都是其个位数形式后添加后缀-ty构成。表示几十几时,在几十和个位基数词形式之间添加连字符“-” 21 twenty-one 76 seventy-six D.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. 101 a hundred and one 320 three hundred and twenty 648 six hundred and forty-eight E.千位数以上 “,”前 的数字后添加thousand(千),第二个“,”前面的数字后添加million(百万),第三个“,”前的数字后添加billion(十亿)。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。 2,648 two thousand six hundred and forty-eight 16,250,064 sixteen million two hundred and fifty thousand sixty-four 5,237,166,234 five billion,two hundred and thirty-seven million,one hundred and sixty-six thousand,two hundred and thirty-four(注:只有百跟十之间才有and) (2)基数词的用法 A.基数词在表示确切的数字时,不能使用百、千、百万、十亿的复数形式;但是,当基数词表示不确切数字,如成百、成千上万,三三两两时,基数词则以复数形式出现。 There are hundreds of people in the hall. 大厅里有数以百计的人。 Thousands and thousands of people come to visit the Museum of Qin Terra-Cotta Warriors and Horses every day. 每天有成千上万的人来参观秦兵马涌博物馆。

完整版初中英语语法大全知识点总结

英语语法大全 初中英语语法 学习提纲 一、词类、句子成分和构词法: 1、词类:英语词类分十种: 名词、形容词、代词、数词、冠词、动词、副词、介词、连词、感叹词。 1、名词(n.):表示人、事物、地点或抽象概念的名称。如:boy, morning, bag, ball, class, orange. :who, she, you, it . 主要用来代替名词。如): 2、代词(pron.3、形容词(adj..):表示人或事物的性质或特征。如:good, right, white, orange . 4、数词(num.):表示数目或事物的顺序。如:one, two, three, first, second, third, fourth. 5、动词(v.):表示动作或状态。如:am, is,are,have,see . 6、副词(adv.):修饰动词、形容词或其他副词,说明时间、地点、程度等。如:now, very, here, often, quietly, slowly. 7、冠词(art..):用在名词前,帮助说明名词。如:a, an, the. 8、介词(prep.):表示它后面的名词或代词与其他句子成分的关系。如in, on, from, above, behind. 9、连词(conj.):用来连接词、短语或句子。如and, but, before . 10、感叹词(interj..)表示喜、怒、哀、乐等感情。如:oh, well, hi, hello. 2、句子成分:英语句子成分分为七种:主语、谓语、宾语、定语、状语、表语、宾语补足语。 1、主语是句子所要说的人或事物,回答是“谁”或者“什么”。通常用名词或代词担任。如:I'm Miss Green.(我是格林小姐) 2、谓语动词说明主语的动作或状态,回答“做(什么)”。主要由动词担任。如:Jack cleans the room every day. (杰克每天打扫房间) 3、表语在系动词之后,说明主语的身份或特征,回答是“什么”或者“怎么样”。通常由名词、 代词或形容词担任。如:My name is Ping ping .(我的名字叫萍萍) 4、宾语表示及物动词的对象或结果,回答做的是“什么”。通常由名词或代词担任。如:He can spell the word.(他能拼这个词) 有些及物动词带有两个宾语,一个指物,一个指人。指物的叫直接宾语,指人的叫间接宾语。间接 宾语一般放在直接宾语的前面。如:He wrote me a letter . (他给我写了 一封信) 有时可把介词to或for加在间接宾语前构成短语,放在直接宾语后面,来强调间接宾语。如:He wrote a letter to me . (他给我写了一封信)

初中英语语法知识—数词的经典测试题(4)

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[注]:(1)百位与十位之间要加and;百位为0的话,就加在百位和个位之间。 108→one hundred and eight, 146→one hundred and forty-six, 500→five hundred , 1001→one thousand and one, 1813→one thousand eight hundred and thirteen. 一千:1000→one(a)thousand, 一万:10,000→ten thousand, 十万:100,000→one hundred thousand , 百万:1,000,000→one million, 千万:10,000,000→ten million, 亿:100,000,000→one hundred million, (2)英语用千、百万等单位计数,大数字从右向左看, 每隔三位划一逗号,倒数第一个逗号之前要用thousand,倒数第二个逗号之前要用million,倒数第三的逗号之前要用billion 表示。 3,456,789 three million four hundred and fifty- six thousand seven hundred and eighty-nine 6,004,001 six million four thousand and one (3) hundred、 thousand、 million表示确切的数时,不加s。如:five hundred(五百),加S时表示不确定的数,后面必须要有of,前面可以加上some, many, several等词,翻译为:“成…上…”。hundreds of(成百上千的),thousands of(成千上万的), millions of(成百万的) 2、序数词:表示顺序的数词叫序数词。 ①英语的序数词基本变法: (1) 一般在基数词后加th,(2)-ve结尾的改为-fth,(3)-ty结尾的改为-tieth,(4) 熟记特殊词。

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