thousand(十万)，million(百万)，ten million(千万)，a hundred million(亿)， billion(十亿)。 (7)在英语中，1000以上的阿拉伯数字，从后往前数每三位加一个逗号“，”。如：
10.His mother is in ___C___.
• A. her forty B. her the forty C. her forties D. her fortieth 11. Two pens are lost. I want to buy a __A____ one.
A. third B. three C. first D. second 12.Three million, three hundred and thirty-three thousand, three hundred and
6. Christmas Day is December ___D____.
A. twenty-five B. the twentieth-five C. the twenty fourth D. the twenty-fifth
7. The girl goes to school ___A_____.
5. There are ____A___ people here.
A. three hundred and twenty-one B. three hundreds and twenty-one
C. three hundred, twenty-one
D. three hundred, twenty and one
数词
数词：是用来表示事物的数目和数序的词。 基数词
数词 序数词
一、基数词
一、基数词的构成：
(1)1-12的基数词是独立的单词，即
one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve。
(2)13-19的基数词均以-teen结尾，即
二、用括号内所给词的适当形式填空
• 1. the boy in green is __t_h_re_e__(three) years old. • 2. February is the __s_e_c_o_n_d(two)month of a year. • 3. Which is the ___fif_t_h__ (five) month of a year? • 4. December is the __tw_e_l_ft_h(twelve) day of a week. • 5. There are two _t_h_o_u_s_a_n_d(thousand) students in our school. • 6. We can see _m__il_lio_n_s_(million) of people in the square. • 7. My _f_ir_s_t_ (one) name is Jim. • 8. I’m _e__ig_h_t(eight) years old. Today is my __e_ig_h_th_(eight) birthday. • 9. I’m in Class _F_o__u_r _ (four). • 10. There are _s_e_v_e_n_ (seven) days in a week.
thirty-three is __D____. A. 30,300,333 B. 333,333,333 C. 3,300,333 D. 3,333,333 13. There are ___B___ students in the game. I’m the ______. A. twelve; twelve B. twelve; twelfth C. twelfth; twelve D. twelfth; twelfth
A. at the age of seven B. seven years C. when she seven D. seven years old
8. My brother was born __B____.
A. in May 6th,1998 B. on May 6th, 1998
C. in 1998, May 6th D. on 1998, May 6th
A. Five hundreds B. Five hundreds of C. Hundreds of D. Hundred of
4. ____B___ is very difficult.
A. Lesson Ninth B. Lesson Nine C. Ninth Lesson
D.The Lesson Ninth
一、单项选择。
1.There are _B____ days in October.
A. three-one B. thirty-one C. thirty D. thirty-first 2.Sunday is the ___A___day of the week.
A. first B. seventh C. sixth D. fifth 3.____C___ people are seeing the movie now.
thirteen, fourteen, fifteen, sixteen, seventeen,eighteen,ቤተ መጻሕፍቲ ባይዱineteen
(3)20-29的整十位均以-ty结尾，即
twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety.
(4)十位数与个位数之间要加连字符号“-”，如：28→twenty-eight
96→ninety-six (5)百位和十位(若无十位则和个位)之间加and。如：
138→one hundred and thirty-eight 405→four hundred and five (6)整数单位：hundred(百)，thousand(千)，ten thousand(万)，one hundred