初中英語復習專輯(4)數字講解練習答案

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數字分為基數字和序數字。用來表示事物數量的詞稱為基數字，用來表示事物順序的詞稱為序數字。

1.基數詞（1000以內基數詞的讀法）

365—three hundred and sixty-five

505—five hundred and five

2.基數詞變序數詞的方法：

基變序，有規律；詞尾要加th。

一、二、三、特殊記憶；字尾分別tdd。

八去t ，九去e ；ve則以f替代。

ty 則變作 ti ; 后面還有一個e。

如果遇到幾十個；只把個位變成序。

eg. one—first two—second three—third

eight—eighth nine—ninth twelve—twelfth

twenty—twentieth

twenty-one –-twenty-first

3.數字的應用：

A、時刻表達法：

a. 整點：基數詞 o’clock

eg. It’s eight o’clock now.

b. 幾點幾分：

1．直接表達法：先小時后分成小時

eg. 3:25 three twenty-five

2.間接表達：先分后分小時

1)(<30分鐘)past) ：分鐘past 小時

eg. 3:25 twenty-five (minutes) past three

2) (>30分鐘)用to)：(60-分鐘數) to (小時數 1)

eg. 3:35 twenty-five (minutes) to four

3) 30分鐘 = half 15分鐘 = a quarter

eg. 3:30 three thirty = half past three

3:15 three fifteen = a quarter past three.

3:45 three forty-five = a quarter to four

B、日期表達法:月日、年(或日月年)

1949年10月1日 :

October1st , nineteen forty-nine

=the first of October, nineteen forty-nine

2023年: the year two thousand

=twenty hundred

2023年: twenty o one

3月1日: March the first = the first of March

C、表編號：

第207房間：Room 207

第五課： Lesson 5 = the fifth lesson

D、序數詞和不定冠詞(a; an)連用表“又一；再一”

eg. You’ve done it three times. Why not try a fourth time?

E、分數表達：分子（基數）、分母（序數）

eg. one third 三分之一 two thirds 三分之二

注:1。當分子超過1時，分母加s

2.包含分數的短語主語由分數后的單詞決定

eg.1)One third of the students are girls.

2)One third of the milk is mine.

3.分數的特殊形式

1)one third = a third

2)one fourth = a quarter

three fourths = three quarters

3)one second = a half

F、一些數字的復數 of表約數：

hundreds of ; thousands of ; millions of

練 習

( )1.If you go out at night, you’ll be able to see ____ starts.

A. thousands of B. thousand of

C. nine thousands of D. thousands

( )2.Monday is ___ day of the week.

A. first B. the first

C. the second D. second

( )3.You’ve done it twice. Why not try ____ time?

A. third B. the third C. a third D. once

( )4.Which is the____ month? It’s September.

A. nine B. nineth C. ninth D. ninety

( )5.December is ___ of the year.

A. the twelfth months B. the twelfth month

C. the twelveth months D. twelve months

( )6.There are ___ floors in the building and he lives on the ____ floor.

A. eighteen, fifteen B. eighteenth, fifteenth

C. eighteen, fiveteen D. eighteen, fifteenth

( )7.I was born ___, 1982.

A. on June 2rd B. in June 2nd

C. on June two D. on June 2

( )8.It’s ____ from our home to the zoo.

A. two and a half hours’ walk

B. a half and two hours walk

C. two hours and a half hour’s walk

D. two and a half hour’s walk

( )9.What time is it now? It’s ___ to six.

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Tags：基數   序數詞   數詞