[初中教育]英语数词的复习课件.ppt

倍数表达法 a. 主语+谓语+倍数（或分数）+ as + adj. + as。译：我有你三倍那么多 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%。 　　 d. 还可以用by+倍数，表示增加多少倍。译： 今年粮食产量增加了4倍。 8. hey received ______ of letters about their TV programs. A. dozen B. dozen and dozen C.score D. Dozens 9. Who is that man,______ in the front row? A. one B. the one C. first D. the first 10. We have produced ______ this year as we did in 1993. A. as much cotton twice B. as twice much cotton C. much as twice cotton D. twice as much cotton 11. 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 big 12. 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 large 13. Five hundred yuan a month _____ enough to live on. A. is B. are C. is being D. has been 14. ______ of the buildings were ruined. A. Three fourth B. Three four C. Three-fourths D. Three-four 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。 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 literature were at hand，waiting to be used. 2.—The boss said we had only three days to finish the work. —Dont worry.We have already got through two 　　　　 (three) of it. 3.Two 　　　　 (five) of the land in that district is covered with trees and grass. 7. Five million of dollars is a lot of money. 8. There are thousand of children in the park now. thousands 9. By the end of the twenty century, the world population had passed six billion. twentieth 10. Over three fifth of the world’s books and newspapers are written in English. three fifths twentieth thirds fifths * * 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。