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英语语法 English Grammar. Unit 2. Numbers. Contents. Study objectives. Warm-up activity. Unit 3 Numbers. Study objectives. describe the definition of numbers classify the classes of numbers grasp the usages of numbers. grasp the usages of Cardinal Numbers;

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slide2

Contents

Study objectives

Warm-up activity

Unit 3Numbers

slide3

Study objectives

describe the definition of numbers

classify the classes of numbers

grasp the usages of numbers

grasp the usages of Cardinal Numbers;

grasp the usages of Ordinal Numbers;

grasp the usages of Fractional Numbers;

slide4

Warm-up Activity

Let’s do some warm-up exercises!

translation
Translation
  • a drop in the ocean

沧海一粟

  • within a stone’s throw

一箭之遥

  • kill two birds with one stone

一箭双雕

  • A fall into the pit, a gain in your wit.

吃一堑,长一智。

translation1
Translation
  • at sixes and sevens

乱七八糟

  • on second thoughts

再三考虑

  • by ones and twos

三三两两地,零零落落地

translation2
Translation
  • He had one over the eight after be drank only half bottle of the wine.

他才喝了半瓶酒就醉得七歪八倒了。

  • Two heads are better than one.

三个臭皮匠胜过诸葛亮。

translation3
Translation
  • One man’s meat is another man’s poison.

人各有所好。

  • I’ll love you three score and ten.

我会爱你一辈子。

  • His mark in math is second to none in the class.

他的数学分数在班上名列前茅。

translation4
Translation
  • I always believe my sixth sense.

我总相信我的直觉。

  • He talks about you nine times out of ten when we have a chat.

每次我们闲聊他几乎都谈及你。

slide10

Task 1.1

The classification of numbers

contents
Contents

1. The classification of numbers

2. Cardinal numbers

3. Ordinal numbers

4. Percentages

5. Fractions

6. Decimals

7. Multiples

8. Additional information

9. Exercises of numbers

slide12

Task 1.2

Cardinal Numbers

slide14
基数词的构成(二)
  • 20--100之间各数词要在十位和个位之间加连字符号

“-”。

22twenty-two99ninety-nine

2. 三位数数词要在百位和十位(若无十位则和个位)之间加and。

157one hundred and fifty-seven208two hundred and four

  • 1,000以上的数字,从后面向前数,每三位数加“,”;第1个“,”为thousand,第2个“,”为million。 2,002two thousand (and) two38,654 thirty-eight thousand six hundred (and)

fifty-four

slide15
基数词的用法

1.作定语

The nine girls are from Beijing.

这九个女孩是北京人。

2.作主语

Eight is a good number.

8是个好数字。

slide16
3.作宾语

How many do you want? Five, please.

你要多少? 五个。

4.作表语

They are altogether fourteen.他们一共十四个人。

5.作同位语

There is a room for you two.有你们两人的房间。

slide17

Task 1.3

Ordinal Numbers

slide18
序数词的构成

1. 以与之相应的基数词加词尾-th构成six —sixthfour—fourthten — tenth

2. 特殊形式

one—first two—second three—third

3. 缩写形式阿拉伯数字+序数词的最后两个字母。

first—1stsecond—2ndthird—3rd

slide19
序数词的用法

1.作主语

The first is his.第一个是他的。

2.作宾语

Please pass me the third.请递给我第三个。

3.作定语

The tenth boy is from Singapore.第十个男孩是新加坡人。

注意:序数词作定语时,前面一般要加定冠词 (或物主代词)

slide20

Task 1.4

Percentages

slide21
百分数

用法:例句作状语

  • The price of the computer was reduced by 24 per cent.

计算机价格降低了24%。

  • The output of cars in China this year is 48 per cent more than in 2001.今年中国小汽车产量比2001年上升了48%。
slide22

Task 1.5

Fractions

slide23
分数词的形式
  • 类别:

1. 一般表示法

one fourthtwo third

2. 其他表示法

two and three fifths

a (one) halfa (one) quarterthree quarters

slide24
分数词的作用

1.作主语

A quarter of the students are from England.

1/4的学生是英国人。

2.作宾语

We will use one fifth of the money for construction.

我们将用1/5的钱来进行建设。

3.作表语

My salary is only one third of that of his boss.

我的工资只是他老板的1/3。

slide25
分数词的作用

4.作定语

It’s one-twentieth the thickness of a human hair.

它相当于人头发丝的1/20(那样粗细)。

5.作状语

This room is one tenth larger than that one.

这个房间比那个房间大1/10。

slide26

Task 1.6

Decimals

slide27
小数的读法
  • 例子:
  • 6.3 six point three
  • 0.4 zero(或nought) point four
  • 12.386 twelve point three eight six 806.07 eight hundred and six point o seven
slide28
小数的用法
  • 作定语:
  • The number of college students is now 2.8 times that of 1998 in our college.
  • 我们大学现在的学生人数是1998年的2.8倍。
  • Its capacity was 4.3 times as great as that in 1981.它的生产能力为1981年生产能力的4.3倍。
slide29

Task 1.7

Multiples

slide30
倍 数
  • 通常用time表示倍数
  • The earth is 49 times the size of the moon.地球的大小是月球的49倍。
  • The output of computers was more than 3 times greater.
  • 计算机产量增长了3倍多。
  • It is 8 times as big as Japan.
  • 它有日本8倍大。
slide31

Task 1.8

Additional Information

slide32
年份、月份、日期、时刻

1.年份(年份是四位数字时,一般分为两位来读),表示年份用介词in

1985年nineteen eighty-five

1990年nineteen ninety

2000年two thousand

2006年two thousand and / o six

slide33
2. 月份(月份的第一个字母要求大写),表示月份用介词in
slide34
4. 时刻(通常使用基数词来读),表示时刻用介词at

8点eight o’clock / eight

9点15分nine fifteen/ a quarter

past nine

14点15分fourteen fifteen

上午9点nine a.m.

下午5点25分five twenty-five p.m.