數詞的基本用法

(一)基數詞的基本用法

1.定語

Fifty thousand London dockers are out on strike.

2.主語

數詞作主語，謂語動詞用單數。

如： Two months is quite a long time.

Five is an odd number.

3.賓語或介詞賓語

How many do you want?——Eight，please.

The city has a population of four million.

4.表語

We are altogether fourteen.

Five plus seven is twelve.

5.同位語

What work are you to assign us three?

Is there room for us two?

6.基數詞+單數名詞+形容詞構成合成形容詞。如：一個五歲的男孩a five-year-old boy;一座800米長的橋an 800-metre-long bridge;女子400米接力girls‘400-metre relay race.

7.句型：主語+is +about(大約)/ over =more than(超過)/nearly(接近)+具體數詞+metre(s)/kilometre(s)/kilo(s)long / high /tall /deep /away等。如：長江長6300公里。

The Changjiang River is 6，300 kilometres long.

8.表示“……十”的數詞的復數形式可以用來表示人的歲數或年代：

He is in his early thirties.

He died still in his forties.

This took place in the 1930s.

(二)序數詞的基本用法

1.序數詞主要用作定語，前面一般要加定冠詞(或物主代詞)：

Tom is their second son.

They celebrated the 10th anniversary of the founding of the republic.

I will never give up，not even on the 1，000th or 10，000th try.

2.有時前面可以加一個不定冠詞來表示“再一”，“又一”這樣的意思：

We‘ll have to do it a second time.

Shall I ask him a third time?

When I sat down，a fourth man rose to speak.

3.First，second 等有時可用來表示“第一個人(批)”“第二個人”等：

She was among the first to come and settle in Dujiashan.

You will be the second to speak.

4.如果數字較長，序數詞總避免使用，而且讀的方法也常常簡化：

第201房間：Room 201

第319面：page 319

第一拖拉機廠：the Number I Tractor Works

第六號車廂：Carriage No.6

南京路1490號：1490 Nanjing Road

電話號碼55――2347：telephone number ：55—2347

5. 在談編了號的東西時，我們可以用基數詞表示順序：

the first part——part one

the third squad——squad three

the twenty-third section——section twenty-three

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