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There are three thousand students in our school. After the war, thousands of people became homeless. 3）在一些表示\一排\或\一组\的词组里；
如：They arrived in twos and threes. 他们三三两两的到达了。 4）表示\几十岁\， 例如：He died still in his forties． 5）表示\年代\，用 in +the +数词复数； 二、序数词
1）序数词主要用作定语，前面要加定冠词，例如： The first truck is carrying a foot baskets．
2）序数词有时前面可加不定冠词来表示―再一‖，―又一‖这样的意思，例如： We'll have to do it a second time．
3) 注意较为容易拼写错误的序数词及其缩写形式：one---first, two---second, three---third, five---fifth, eight---eighth, nine---ninth, twelve---twelfth。 缩写形式：first→1st twenty-second→22nd
4) 表示分数时，分子用基数词表示，分母用序数词表示。分子大于1时，分母加-s。例如： three fourths, one second, two fifths 2、难点 倍数表示法
主语+谓语+倍数（或分数）+ as + adj. + as
I have three times as many as you. 我有你三倍那么多。 3、易错点
1. We will have a _________ holiday after the exam.
A. two month B. two-month C. two month‘s D. two-months
答案: B (选择C的同学要注意应用two months‘; 选择D的同学要注意名词之间有 ―— ― 后的组合词当作形容词来用, 因此就不用所有格形式了.) 2. ._______ trees are cut down in the forests every year.
A. Thousand B. Thousands C. Thousand of D. Thousands of 答案: D. (选择C的同学注意词组记忆的准确性) 3. Our sports meeting will be held ________.
A. on 24, Tuesday, April B. in April 24, Tuesday C. on Tuesday, April 24 D. in April Tuesday 24
答案: C. (选B的同学是受到中文的影响,要特别注意中英文的差异) May 20th,2002,the twentieth of May,2002
注意：带有数词的名词作定语时，一般用单数形式 a seven-year-old boy
second→2nd
third→3rd fourth→4th
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4. Our school will hold a sports meeting next week. Tom and I will be in boys' . A.800-metres-race B.800-metres race C.800-metre race D.800 metre race
答案: C. 800来修饰race,有两种表达法，800-metre race或800 metres' race. 5. I'm very hungry, I have eaten two cakes, would you please give me one?
A. move B. three C. a third D. the third
答案: C. 序数词前加不定冠词，表示―又一，再一‖，表示another。 6. of the land in the world is covered by water.
A. Four three B. Three four C. Three fourth D. Three fourths 答案: D. 此题考查分数的写法，如果分子大于1，分母用复数。 例6 We will have holiday in the winter.
A. four weeks B. a four-week C. four week D. a four weeks 答案: B. 此题为一个四星期的假期，数词+名词用作定语。
第二部分：强化练习
一、单项选择 1、 基础题
1． ---How many workers are there in your factory? ---There are two __________.
A. hundreds B. hundred C. hundred of D. hundreds of
2． About ________ students in our class can describe that place in English. A. three-fifths B. three-fifth C. third-five D. third-fifths
3． ---Can you write the number eighty-five thousand, six hundred and twenty-six? ---Yes, it is __________.
A. 856620 B. 85626 C. 58662 D. 58626
4．. When was the PRC founded? It was founded on _________. A. July 1, 1921 B. October 1, 1949 C. August 1, 1927 D. May 1, 1922
5．. _______ Chinese are looking for ways to learn English well before Beijing 2008 Olympics. A. Thousand B. Thousands C. Thousand of D. Thousands of 6．Mr Zhang teaches at Middle School.
A. a No.5 B.No.5 C. the No.5th D.5th No 7．John lives on floor.
A. twenty B. twentieth C. the twentieth D. the twentyth 8．He has worked on the farm for years.
A. two and half B. two and a half C. a half and two D. two halves and a
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9．Xiao Mao and Da Mao are in .
A. team Fourth B. the team Four C. Team Four D. Four team 10．Sorry, had been sold out.
A.42 size B. Size 42 C.the 42 size D. the size 42 2、 提高题
1．It is said that SARS has killed more than ________ people worldwide. A. three hundreds B. three hundreds‘ C. three hundred‘s D. three hundred 2．-What do you think of a war, Li Ming?
-I‘ve no idea. But it‘s a fact that _______ people had to leave their hometown during the War
on Iraq.
A. three millions B. million of C. millions of D. several millions 3． We all think that the _______ century will bring us more hopes.
A. twenty-first B. twentieth-first C. twenty-one D. twentieth-one 4． Both of the two rulers are broken. I want to buy a _______one. A. three B. third C. forth D. /
5. I heard the sports meeting has been put off until _______, hasn‘t it?
A. the 3 and 4 B. the 3th and 4 th C. the 3 rd and 4 th D. four and five 6. _______ of the earth _______ made up of oceans.
A. Two-third; is B. Two-thirds; is C. Two-third; are D. Two-thirds; are 7. Since 1964, _______ satellites have been sent into space.
A. dozens of B. four dozens C. dozen of D. several dozens 8. Jack Booth is a _______ man.
A. 21-years-old B. 21 years old C. 21-year-old D. 21 year old 9. I‘ve lived here for about _______.
A. two and a half year B. two and a half years C. two year and a half D. two years and half 10．---Dad, what‘s the sea like?
---Well, it‘s large and full of water. It covers about _____ of the earth.
A. one third B. three quarter C. three-fourth D. three quarters
C：冠词专项
第一部分：知识点分析
归纳1：不定冠词
1） a和an均用在单数名词之前，表示某一类人或事物 2） 指某一类人或事物中的任何一个 3） 指某人或某物，但不具体说明何人或和物
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4） 表示―每一‖的意思，相当于every 归纳2： 定冠词
1） 特指某（些）人或某（些）事物 2） 指说话人和听话人都熟悉的人或事物 3） 上文提到过的人或事物 4） 表示世界上独一无二的事物 5） 用在序数词和形容词最高级之前
6） 用在某些形容词之前，表示某一类人或事物 7） 用在某些专有名词之前和某些习惯用语中
8） 用在姓氏复数之前，表示―某某一家人‖，―某某夫妇‖ 9） 用于江湖、海洋、山脉、群岛的名称前面。 10） 用于演奏的乐器之前，活动场所或方向、方位之前。 归纳3： 不用冠词的情况
1）专有名词人名，地名，节日，月份，年份，星期和不可数名词(一般指物质名词和抽象名词)前一般不用冠词。
2）球类，棋类，语言，三餐，游戏名称和颜色前不加冠词。
3) 名词前已有this, that, my, your, some, any, no, each, every等代词作定语时，不用冠词。 4) 在表示家庭成员名称，称呼语，表示头衔或职务的名词前不加冠词。 5) 表示某一类人或事物的复数名词前。 归纳4：区别以下词组
at table at the table at desk at the desk at school at the school by sea by the sea go to sea go to the sea go to school go to the school go to bed go to the bed go to hospital go to the hospital in class in the class in bed in the bed in prison in the prison in hospital in the hospital in place of in the place of in case of in the case of in future in the future next year the next year on earth on the earth take place take the place in front of n the front of out of question out of the question two of us /the two of us
a teacher and writer a teacher and a writer 3、易错点
1 It's time for dinner. Kings are at table.
A. /,the B. the, the C. The,/ D./,/
答案: C. 在姓氏复数前用the表示一家人，就餐用at table.