1.表示年龄、时间、电话号码、年份He is twelve years old.Class Two Grade Seven2.百、千、百万的用法有具体数字：不加 s，不加 of → two hundred 两百无具体数字：加 s，加 of → hundreds of 成百上千3.几十几：中间加连字符twenty-one, ninety-nine
分子基数词，分母序数词；分子 > 1，分母加 s1/3 → one third2/3 → two thirds1/2 → a half1/4 → a quarter
5.年月日、时刻
2026 年 5 月 1 日 → May 1st, 20269:30 → nine thirty / half past nine9:15 → a quarter past nine
6. 倍数与概数
两倍：twice；三倍及以上：three timesmore than /over 超过；less than 少于
7. 固定搭配
in one's thirties 在某人三十多岁时thousands of 成千上万another two= two more 另外两个
二、数词专项练习题（共 40 题）
一）、单项选择（30 题）
1.My father is ______ years old.A. fourty B. forty C. fourteen2.There are ______ students in our school.A. two thousands B. two thousand C. two thousands of3.September is ______ month of the year.A. nine B. ninth C. the ninth4.This is my ______ time to visit Beijing.A. two B. second C. the second5.______ of the students are girls.A. Two third B. Two thirds C. Second three6.He became a famous writer when he was ______.A. in his twenty B. in his twenties C. in his twentieth7.—What time is it?—It’s ______.A. half to nine B. half past nine C. nine half8.There are ______ days in a week.A. seventh B. seven C. the seven9.Today is my brother’s ______ birthday.A. twelve B. twelveth C. twelfth10.We have ______ classes in the morning.A. four B. fourth C. the four11.______ people came to the party.A. Hundreds of B. Hundred of C. Hundreds12.Please turn to Page ______.A. fifty B. fiftieth C. the fifty13.—What’s 10 minus 3?—It’s ______.A. seven B. seventh C. seventeen14.He has lived here for ______ years.A. third B. three C. the three15.The ______ question is very easy.A. five B. fifth C. fiveth16.About ______ of the earth is covered with water.A. three fourth B. three fourths C. third four17.I have ______ new books.A. two another B. more two C. two more18.Monday is the ______ day of a week.A. one B. first C. second19.There are ______ months in a year.A. twelve B. twelfth C. twelveth20.He finished ______ in the race.A. three B. third C. the third21.______ trees are planted on the hill every year.A. Thousand of B. Thousands of C. Thousands22.My birthday is on July ______.A. five B. fifth C. fiveth23.______ of us have been to the Great Wall.A. One three B. One third C. First three24.He wrote ______ articles last year.A. hundred B. hundreds C. hundreds of25.It takes me ______ hour to do my homework.A. a B. an C. the26.The meeting will begin at ______.A. a quarter past ten B. ten past a quarter C. quarter ten27.This is the ______ time I’ve told you.A. three B. third C. threeth28.There are ______ seasons in a year.A. four B. fourth C. the four29.She is ______ in the exam.A. second B. the second C. two30.______ students are playing basketball.A. Two hundreds B. Two hundred C. Two hundred of
二、用括号内单词适当形式填空（10 题）
1.Today is my ______ (twenty) birthday.2.March is the ______ (three) month of the year.3.Two ______ (three) of the work is finished.4.There are about two ______ (hundred) people here.5.He is in his ______ (fifty).6.This is the ______ (one) time I come here.7.Please look at the ______ (nine) picture.8.______ (thousand) of visitors come here every year.9.Lesson ______ (five) is easy.10.He is ______ (four) years old.
