基数词的基本用法
1.定语
FiftythousandLondondockersareoutonstrike.
2.主语
数词作主语,谓语动词用单数。
如:Twomonthsisquitealongtime.
Fiveisanoddnumber.
3.宾语或介词宾语
Howmanydoyouwant?——Eight,please.
Thecityhasapopulationoffourmillion.
4.表语
Wearealtogetherfourteen.
Fiveplussevenistwelve.
5.同位语
Whatworkareyoutoassignusthree?
Isthereroomforustwo?
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afive-year-oldboy;一座800米长的桥an800-metre-longbridge;女子400米接力girls‘400-metrerelayrace.
7.句型:主语+is+about(大约)/over=morethan(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。
TheChangjiangRiveris6,300kilometreslong.
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:
Heisinhisearlythirties.
Hediedstillinhisforties.
Thistookplaceinthe1930s.