二、序数词
序数词的缩写形式如first---1st second---2nd thirty-first---31st等。
三、 数词的用法
1)倍数表示法
a. 主语+谓语+倍数(或分数)+ as + adj. + as。例如
I have three times as many as you. 我有你三倍那么多。
b. 主语+谓语+倍数(分数)+ the size (amount,length…) of…。例如:
The earth is 49 times the size of the moon. 地球是月球的49倍。
c. 主语+谓语+倍数(分数)+ 形容词(副词)比较级+ than…。例如:
The grain output is 8 percent higher this year than that of last year. 今年比去年粮食产量增加8%。
d. 还可以用by+倍数,表示增加多少倍。例如:
The production of grain has been increased by four times this year. 今年粮食产量增加了4倍。
2)分数表示法的构成:基数词代表分子,序数词代表分母。分子大于1时,分子的序数词用单数,分母序数词用复数。例如:
1/3 one-third; 3/37 three and three-sevenths.
2.7 冠词练习
1.When Linda was a child, her mother always let her have ______ bed.
a. the breakfast in b. the breakfast in the c. breakfast in d. breakfast in the
2.He has promised to give up ______ hundreds of times.
a. a tobacco b. tobacco c. the tobacco d. tobaccos
3.______ usually go to church every Sunday.
a. The Brown b. A Brown c. Browns d. The Browns
4.The train is running fifty miles ______.
a. an hour b. one hour c. the hour d. a hour
5.He can play almost every kind of music instrument but he is good ______.
a. at the flute b. at flute c. at a flute d. at that flute
6.The investigators found that more should be done for ______ in India.
a. those poor b. a poor c. poor d. the poor
7.You look in high spirit. You must have ______ during your holiday.
a. wonderful time b. a wonderful time c. the wonderful time d. some wonderful time
8.The city assigned a policeman to the school crossing because ______ traffic there was so heavy.
a a b. an c. the d. one
9.A new teacher was sent to the village in place of ______ one who had retired.
a. a b. the c. an d. its
10.Virtue and vice are before you;______ leads you to happiness,______ to misery.
a. the former…latter b. a former…a latter
c. the former…the latter d. former…latter
11.The children in the kinder-garden soon took ______ to their teachers.
a. quite fancy b. a quite fancy c. quite a fancy d. the quite fancy
12.______ tend to bemoan the lack of character in the young generation.
a. The old b. Old c. Elderly d. Older
13.A man suffering from a chock should be given ______.
a. hot sweet tea b. a hot sweet tea c. the hot sweet tea d. one hot sweet tea
14.He answered my questions with ______ not to be expected of an ordinary schoolboy.
a. his accuracy b. a accuracy c. the accuracy d. an accuracy
15.If you go by train you can have quite ______ comfortable journey.
a. the b. one c. a d. that
16.We’re going to ______ with ______ today, aren’t we
a. the tea…the Smiths b. tea…those Smiths c. a tea…a Smith d. tea…the Smiths
17.I want an assistant with ______ knowledge of French and ______ experience of office routine.
a. the…the b. a…the c. a…an d. the…an
18.Ann’s habit of riding a motorcycle up and down the road early in the morning annoyed the neighbors and ______ they took her to the court.
a. in the end b. at the end c. in an end d. in end
19.It is reported that today ______ president will have lunch with ______ President Omon.
a. the…the b. a…a c. the…/ d. /…/
20.Tianan Men Square and ______ Great Wall are tow of the places everyone should see in ______ People’s Republic of China.
a. the…the b. /…/ c. the…/ d. /…the