【正文】 80— 90— 。一、基數(shù)詞的構(gòu)成 1．1—12的基數(shù)詞是獨(dú)立的單詞，即： 2．13—19的基數(shù)詞以teen結(jié)尾。注意：hundreds of ／thousands of／millions of ＋復(fù)數(shù)名詞，其前面不能加具體的數(shù)詞，但可加several或 many。 （3）序數(shù)詞的縮寫形式為：阿拉伯?dāng)?shù)字加上這個詞的末尾兩個字母。 表示“幾點(diǎn)幾分”還可直接用基數(shù)詞。②先月后日，日子要讀成序數(shù)詞。如：Page 457第457頁；⑤電話號碼，用基數(shù)詞，可單個讀，重復(fù)的數(shù)字也可讀“double”，如：3855633—three eight five five（double five） six three three（double three）。如： Two months is quite a long time．Four and two is six．What39。要注意的是一個半的表達(dá)法，如：One and a half apples is left on the ，但謂語動詞則要用單數(shù)。 A. February 12, 1809 D. second( C. 16th D. Nineteenth( A. on August 1, 1927 four thousand and a hundred and twentythree A. three times big as ) 12. The basketball team of our school ranks ________ in the match. D. the third( B. nine hundred B. fifth。 ) 17. ________, CocaCola began to enter China39。 ) 20. Which room do you live in? ________. C. Room 201st A. two B. the first, millions of ) 24. ________ of them are dining at school. B. seven seven ) 26. Four ________ two is two. A. plus D. divided by(B. three hundred and sixtyfiveB. two thousand eightysix ) 32. It took me ________ to get there. C. nineteen ninety and seven ) 38. “What39。 “It39。 B. June Fourth C. The 7 Lessons _______.” D. May the fourth( B. twentynineth B. half past seven B. three hours39。 ) 49. There are ________ stars in the sky. 7. B 11. C 15. B 19. B 23. B 27. A 31. C 35. D 34. C 30. B 26. B 22. C 18. B 14. D 10. B 6. C C. the two meter C. three hour39。 C. three hundred and thirty fourth ) 43. “What39。 C. a year and a half ) 36. We have known each other for ________. D. the three( ) 33. September is _________ month of the year. B. minus D. divided by( A. plus B. minus A. seven and seventeen B. Twelfth D. first, millions( B. 3,117 D. the second( B. In 1970s C. the fifth。 A. nine hundreds ofs ________. C. in sixties ) 10. The old professor still works hard though he is _________. D. in August 1, 1927( ) 8. The People39。 B. Ninteen ________. ) 4. Abraham Lincoln was _______ President （總統(tǒng)）of the United States. B. ten years old　　 c. 表示幾十歲；　　 d. 表示年代，用 in +the +數(shù)詞復(fù)數(shù)；　　 e. 在乘法運(yùn)算的一種表示法里，如：3 x 5 = 15 Three fives is (are) fifteen. 半小時(shí)為half an hour, 半天為half a day, 半鎊為half a pound, 盡量避免用half a year, half a month, 要用six months, two weeks 或 fifteen days 要注意的是Half of the work is done Half of the books are sold. 當(dāng)Half 作名詞時(shí)，其謂語動詞要看of后面的名詞而定。表示日期有兩種說法和四種寫法，如：2月1號英語表達(dá)法為：the first of February而美語為February (the) first,但其書寫上可有四種寫法①　February 1 ② February 1st ④ 1/2。例如：three fourths, one second, two fifths（四、數(shù)詞在生活中的應(yīng)用 1．鐘點(diǎn)的表示：小時(shí)、點(diǎn)鐘、分鐘、秒鐘要用基數(shù)詞。ll have to do it a second time． Shall I ask him a third time？　（3）表示日期。 2．其余情況均在基數(shù)詞后加th。 6．hundred（百）， （千）， （百萬）， （十億）等前面即使有具體的數(shù)詞，也不能在它們的后面加s。數(shù)詞數(shù)詞分基數(shù)詞和序數(shù)詞。 5．百位和十位（若無十位則和個位）之間加and，如：148—one hundred and fortyeight 406—four hundred and six。”第一、第二、第三分別： ， ， ，eight—eighth nine— ，five— ，twelve— ，twenty— ，forty—fortieth，twentyfive—