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1、基数词序数词英语序数词及基数词基数词：表示“几个”two sons 两个儿子百千万表示确切的数目：用确切数目加hundred,thousand,millon的单数表示几百，千，万。Two hundred 两百例题：There are about three hundred apples in the tree.树上有200个苹果百千万表示不确切的数目：”成百上千”，用hundred,thousand,millon的复数形式加of表示。Hundreds of 其前可以被many,few修饰.There are hundreds of apples in the tree.树上有成千上万个苹果序数
2、词表示“第几”序数词表顺序，一般需用定冠词。 second son 第二个儿子，The first of May五月的第一天（五月一日）Sunday is the firstday of a week.星期天是一个周的第一天基数词变序数词的规律基变序，有规律，词尾加上th;一二三，特殊记，词尾字母t,d,d(first,second,third);八减t(eighth), 九去e (ninth)，f来把ve替(five-fifth,twelve-twelfth);单词ty作结尾，ty变成tie(twenty-twentieth);若是碰到几十几，变成tie(twenty-twentieth);
3、若是碰到几十几，只变个位就可以(twenty-one-twenty-first). 基数词和序数词的练习题一、：写出下列词的序数词1. one 2.two 3. six 4.five 5. nine 6.twelve 7.eight 8.twenty-one 二、写出下列单词的基数词1.third 2.fourth 3.tenth 4.twentieth 5.nineteenth6.thirty-first _三、根据句子意思填空。1. Childrens Day（儿童节） is on the of June（六月）.2. There are months（月）in a year(年).3.
4、Teachers Day(教师节) is on the of September（九月）.4. Three plus(加) six is .四、选择填空。( )1. My cousins birthday in on the of October. A. three B. first C. the second( )2. What date is it today? Its of April. A. twelfth B. the 12th C. 12th( )3. There are days in a week. A. the seven B. seventh C. the seventh
5、D. seven( )4.Sunday is the day of a week. A. one B. first C. second( )5. Twenty-eight minus(减)six is . A. the twenty- second B. twenty-two C. twenty- second( )6. Four plus(加) is twelve. A. seven B. eight C. nine( )1. At night we can see _ stars in the sky.A.thousands of B. thousand of C. two thousan
6、d D.two thousands( )2. There are some _ in our classroom. A. hundred of books B. the hundreds of books C. hundreds of books D. hundred of book( )3. There are _ students in our school. C. four hundreds and forty-five D. four hundred and forty- five( )4. May is _ of a year. A. the fifth months B. the
7、fifth month C. the five months D. the five month( )5. We live in _. A. the twenty-first century (21世纪) B. the century twenty-one C. century twenty-one D. the century twenty-first( )6 He joined the army（参军） on _ of May 1980. A. 1 st B. the 1 C. first D. the first( )7 September is the _month of the ye
8、ar. A. nineth B. ninth C. nine D. the twelveth( )8December the _ is Christmas（圣诞节）. A. twenty-five B. twenty-fifth C. twentieth-five D. twenty-five( )9.Every year, _ people go to visit their factory（参观工厂）A. a thousand of B thousands C. thousand of D. thousands of( )10. Tom writes（写）a _ article(文章).
9、A. nine hundred words B. nine hundreds word C. nine hundred word D. nine hundreds words( )11._ people lost their homes（失去了他们的家园） in Japans earthquake（日本地震）.A. Two thousands B. Thousand C. Thousands of D. Thousand of( )12.Tomorrow（明天） is the boys _ birthday（生日）. A. seventh B. seven C. seventeen( )13H
10、ow was your day of yesterday（昨天）? Perfect（完美）! It was my grandmas（祖父母的） _ birthday. We had a big cake. A. eighty B. eightieth C. the eightieth( )14. A _ boy can sing the English song very well. A. ten-years-old B. ten years old C. ten-year-old D. fifth years old ( )15-How many students are there in
11、your class? -_.A. Twenty nine B. Thirty and two C. Forty-five D. fifties( )16. Our school is not very big. There are only _ students. A. nine hundreds of B. nine hundred C. nine hundreds D. nine hundred of( )17. -How many new words are there in _ lesson? -There are only _. A. five; fifth B. fifth; f
12、ive C. the fifth; the five D. the fifth; five( )18. September is _ month of the year. A. the nineth B. the ninth C. nineth D. ninth( )19. Tuesday is the _ day of a week in English. A. first B. fifth C. third D. fourth( )20. There are _ seasons（季节） in a year in our country. A. two B. four C. second D. fourth( )21. There are _ people in my family. We live on the _ floor in a tall building.A. five, six B. fifth, sixth C. fifth, six D. five, sixth( )22. My lovely daughter is _. A. eight years old B. eight-year-old C. eight year old D. eight-years-old( )23. February 28 s
