上海新东方夏令营整理了一些基数词的基本用法，对你学习英语希望有所帮助

上海夏令营 介绍 基数词是用法
　　1.定语

　　fifty thousand london dockers are out on strike.

　　2.主语

　　数词作主语，谓语动词用单数。

　　如： two months is quite a long time.

　　five is an odd number.

　　3.宾语或介词宾语

　　how many do you want? -----eight, please.

　　the city has a population of four million.

　　4.表语

　　we are altogether fourteen.

　　five plus seven is twelve.

　　5.同位语

　　what work are you to assign us three?

　　is there room for us two?

　　6.基数词＋单数名词＋形容词构成合成形容词。如：一个五岁的男孩a five-year-old boy；一座800米长的桥an 800-metre-long bridge；女子400米接力girls'400-metre relay race。

　　7.句型：主语＋is ＋about(大约)／ over ＝more than(超过)／nearly(接近)＋具体数词＋metre(s)／kilometre(s)／kilo(s)long ／ high ／tall ／deep ／away等。如：长江长6300公里。

　　the changjiang river is 6，300 kilometres long.

　　8.表示“。。。。。。十”的数词的复数形式可以用来表示人的岁数或年代：

　　he is in his early thirties.

　　he died still in his forties.

　　this took place in the 1930s.
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