[初中教育]英语数词的复习课件

1、Grammar: Numerals语法复习：数词 数词的用法数词分基数词和序数词。基数词表示数目，序数词表示顺序。 基数词的用法Thirty of them are Party members.（ ）- How many would you like？- Three, please( )(1) 分析以下句子中基数词在句中的成分The nine boys are from Tianjing.（ ）Six plus four is ten.（ ）We four will go with you.（ ） 基数词的用法(2) 表示一个具体数字时，hundred, thousand, million,b

2、illion,dozen,score一律不用复数；在与of 短语连用，表示概数时，则用复数。例如： 基数词的用法Our country has a popu-lation of 1,300 million people. 基数词的用法We have planted millions of trees in San Bei.(表示具体数字)(表示不确定数字)After the war, thousands of people became home-less. 基数词的用法There are three thousand students in our school.(表示不确定数字)(表示具体

3、数字)(3)基数词中表示“几十”的复数形式可以表达人的岁数或年代He is in his late thirtiesHe died in his fortiesThis took place in the 1930s 他快满四十了。(4) 表示时刻用基数词。 We get up at six.The workers begin work at eight. 表示“几点过几分”，用介词past, 但须在半小时以内。ten past ten 10:109:1512:30a quarter past ninehalf past twelve 表示“几点差几分”用介词to, 但分数须在半小时以上。 t

4、wenty to ninefive to eighta quarter to ten8:407:559:45seven fifteen 表示“几点几分”还可直接用基数词。eleven thirtynine forty7:15= a quarter past seven11:30= half past eleven9:40= twenty to ten 序数词的用法(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 lot of basketsJohn lives on the fifteen-th floor(2) 序数词有时前面可加不

5、定冠词来表示“再一”，“又一”这样的意思，例如：Well have to do it a second time Shall I ask him a third time？When I sat down，a fourth man rose to speak(3）由几个序数词和基数词在拼 写时不对应，很容易写错， 应特别注意。它们是：one-first two-second three-third five-fifth eight-eighth nine-ninth twelve-twelfth(4) 表示年，月，日时， 年用基数词表示，日用序数词表示。1960年十月一日读作: October

6、(the) first, nineteen sixty2004年九月十日读作：September (the) tenth, two thousand and four(5) 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。three fourthsone secondtwo fifths3/41/22/5（6）序数词有时用缩写形式：first1st second2nd third3rdfourth4thtwenty-second22ndthirty-first31stfifty-third53rda. 主语+谓语+倍数（或分数）+ as + adj. + as。译：我

7、有你三倍那么多 b. 主语+谓语+倍数（分数）+ the size （amount，length，width, height） of。译：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。译：今年比去年粮食产量增加8%。 倍数表达法I have three times as many as you.The earth is 49 times the size of the moon. The grain output is 8 percent higher this year than that of last year. d. 还可以用by+倍数，表示

8、增加多少倍。译：今年粮食产量增加了4倍。 The production of grain has been increased by four times this year. PracitceAbout _ students in our class candescribe that place in English.three-fifths B. three-fifth C. third-five D. third-fifths 2. Nine _ pounds a week? Thats very good.A. hundred of B. hundreds ofC. hundreds

9、D. hundred3. -Which is the smallest number of the four? -_.Two-thirds B. A half C. A quarter D. Three-fourthsADC4. We all think that the _ century will bring us more hopes. A. twenty-first B. twentieth-firstC. twenty-one D. twentieth-one5.A _ schoolboy, Li Lida, first tried to cross the Qiongzhou Ch

10、annel in Junem 2000.12-year-old B. 12-years-old C. 12-years-olds6. Both of the two rulers are broken. I want to buy a _one. A. three B. third C. forth D. /7._ martyrs have heroically laid down their lives for the people.Thousand upon thousand of b. Thousand and thousands ofc. Thousands upon thousand

11、s ofAA BC8. hey received _ of letters about their TV programs.A. dozen B. dozen and dozen C.score D. Dozens9. Who is that man,_ in the front row?A. one B. the one C. first D. the first10. We have produced _ this year as we did in 1993.A. as much cotton twice B. as twice much cottonC. much as twice c

12、otton D. twice as much cottonDDD11. The earth is about _ as the moon.A. as fifty time big B. fifty times as big C. as big fifty time D. fifty as times big12. The moon is about _ in diameter as diameter as the earth.A. one-three as large B. one three as large C. one-third as large D. one third as lar

13、ge13. Five hundred yuan a month _ enough to live on.A. is B. are C. is being D. has been14. _ of the buildings were ruined.A. Three fourth B. Three four C. Three-fourths D. Three-fourBCAC翻译句子1.我的房间是她的房间的2倍。2.这所大学十分之三的学生来自南方。3.那个男孩买了几十支铅笔。4.他30多岁时去了美国。My room is twice as large as hers.Three students

14、out of ten in this university come from the south.The boy bought dozens of pencils. He went to America in his thirties. 句子改错：下面各句画线部分中有一处错误，请指出并改正。 1. May is a fifth month of the year. 2. The film has been on for half a hour. the an3. The boys and the girls often play the foot- ball in the afternoon

15、. 4. Its going to rain. Why not take a umbrella with you? an play5. Li Mei often gives us some good information by the e-meil. 6. Weve planted two hundreds trees in the centre of our city this year. by hundred7. Five million of dollars is a lot of money. 8. There are thousand of children in the park now. thousands9. By the end of thetwenty century, the world population had passed six billion. twentieth10. Over three fifth of the worlds books and newspapers are written in English. three fifths用数词的适当形式填空 1.As the (twenty) century came to a close，the raw materials for a great national liter