中考数词专题复习PPT课件
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3)五千个学生
基数词 hundred, thousand , million,
billion表示确
切数目时 不能加s;
巧记基数词
• 基数词不难记, • 找清规律很容易, • 十二以内词各异; • 十三数到十九数去, • 后加-teen莫忘记。 • 二十 三十至九十, • 整十之后有-ty; • 要说“几十几”, • 中间“-”号别丢弃, • hundred是“一百”, • 请你记住莫大意。
only ______ just
to learn something about the production.
a. once a week
b. one week
c. one time a week
d. one a week
Thank you!
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8:50→
11:45→
4)表示整点
8:00→eight(o’clock)
5)表示在某个钟点,用介词at。如:
They begin to work at half past seven.
六、时间表示法
2、日期 1)年代用基数词,在某年要用介词in。如:
He was born in 1983. (1983读成nineteen eightythree)
2、定语: There are fifty students in our class. They live on the third floor.
3、宾语: Give me two. Give me the second.
4、表语: I’m eighteen now. You are the first to speak at the meeting.
二、序数词
2、序数词
1)他跑步得了第一。 He was the first in the race.
序数词一般由基数词后 + th构成,前面一般加定 冠词the
2)第二十yiet the htwent
以tyn结in尾et的y-基数词构成序数词时,先把y改成i,再加eth 3)第93tohnierdhundred and forty-
a 1/3
词
ttwho2ir/d3
th分ird子s 大于1时,分母的序数词要用复
数形式。 1又on2e/a3nd two-thirds
1/o2ne (a) half
o1ne/4(a) quarter / one (a) f3ou/rt4thhree 注意qu:arte一arsy年ea半r and a half
牛刀小试
1. Five hundred yuan a month _____ enough to live on.
a. is
b. are
c. is
being
d. has been
2. ______ of the buildings were ruined.
a. Three fourth
b. Three four
c. Three-fourths
d. Three-four
3. The Olympic Games are held ______.
a. every four years
b. evHale Waihona Puke Baidury four year
c. every fourth years
d. every four-years
4. As he is not in good health, he goes to his factory
one and a half years
2.小数
• 点读point;“零”读o或zero;小数点后 的数字按个位基数词依次读出。如:
•
0. 62z-ero point six
two
3.百分数
• 由percent表示: • 29% ---• 29 percent
四、数词在句中的作用
1、主语: Two of them are teachers. The third is green.
钟数
2)表示几点过几分在半小时以内(包括半小时),用介词 pashta,lf时p钟as数t 在介词的后面,采用倒读法。如: 9:nf3i0nv→e past
7:s0e5v→en
3)表示几点差几分,用介词to,多用在半小时以上(不包括
半
ten to
小时)nai,nqeu也ar用te倒r读to法t。we如lv:e
2)月份首字母要大写,在某月也用介词in,如果有年代出现, 在月份名后加年代,中间用逗号。如: It happened in January, 1999. (这事发生在1999
年1月。) 3)日期用序数词(序数词前加the),在某日用介词on。如: on the first ;on the eighteenth 美国说法:顺序为先月后日。如: May 4(th)(五月四日 —— 读成 May the fourth) 4) 年月日同时出现时,年代位于最后,其前加逗号。如: Mary was born on January lst, 1990.
第ni1n4t9h “二十”以上的多位数,个位数用序数词,其余仍用 基数词。
4)不规则的序数词有以下几个: first, second, third, fifth, eighth, ninth, twelfth
三、其他几种数词
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1)分数由基数词和序数词合成 基数词/序数
5、同位语: You may leave it to us two.
6、状语: This room is one-sixth larger than that one.
五、时刻表示法
1、钟点
1) 10:20→ten twenty / 8:36→eight thirty-six
正读法——按时间表上的数字读;先读钟点数,后读分
数词
• 基数词
•序数词
一、基数词
1)53 f—ifty21~99 的两th位re数e ,在十位数和个位数之间加连字符
构成
three hundred and twenty-
2) 325fi—ve
101~999 的三位数由 hundred 加 and 再
加两位数
或末位数five thousand students