【小升初冲刺】英语专项复习：第2部分 词法 3、数词—基础

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1、1-20；
ne，tw，three，fur，five，six，seven，eight，nine，ten，eleven，twelve，thirteen，furteen，fifteen，sixteen，seventeen，eighteen，nineteen，twenty。
2、21-99 先说“几十”，再说“几”，中间加连字符；
23→twenty-three，34→thirty-fur，45→frty—five，56→fifty-six，67→sixty-seven，78→seventy-eight，89→eighty-nine，91→ninety-ne。
3、101—999先说“几百”，再加and，再加末两位数或末位数;
586→five hundred and eighty-six，803→eight hundred and three
4、l，000以上，先从右往左数，每三位数加一个“，”，第一个“，”前为thusand.第二个“，”前为millin，第三个“，”前为billin；(注意具体数字+hundred，hundred后不加s)
1，001→ne thusand and ne；
18，423→eighteen thusand，fur hundred and twenty-three；
6，260，309→six millin tw hundred and sixty thusand three hundred and nine；
750，000，000，000→seven hundred and fifty billin；
二、序数词
1、一般在基数词后加th[来源:Zxxk.Cm]
如：fur→furth，thirteen→thirteenth
2、不规则变化
ne→first，tw→secnd，three→third，five→fifth，eight→eighth，nine→ninth，twelve—twelfth
3、以y结尾的十位整数，变y为ie再加th
twenty→twentieth， frty→frtieth， ninety→ninetieth
4、从二十一后的“几十几”直至“几百几十几”或“几千几百几十几”只将个位的基数词变为序数词
twenty-first，tw hundred and frty-fifth
基数词转为序数词的口诀：
基变序，有规律，词尾加上-th.
一，二，三，特殊记，词尾字母t，d，d.
八去t，九去e， ve要用f替。
ty将y变成i，th前面有个e.
若是碰到几十几，前用基来后用序。
知识点冲刺练习
一、单项选择
1．( )Our classrm is n ____ flr.
A.tw B.the secnd C.secnd
2．( )—Hw many seasns are there in a year?
—____.
A.Twelve B.Seven C.Fur
3．( )The library is n the ____ flr.
A.ne B.tw C.secnd
4．( )There are ____ big buildings in ur schl.
A.three B.third C.the third
5．( )It's Ben's ____ trip t Beijing.
A.ne B.a C.the ne D.first
6．( )Octber is the ____ mnth f a year.
A.ninth B.tenth C.ten
7．( )The ____ mnth f a year is January.
A.secnd B.first C.third
8．( )Nvember ____ is a free day.
A.25rd B.twenty-five C.25th
9．( )Lk at that bk. There are three ____ wrds in it.
A.hundred B.hundreds C.thusands
10．( )In England, peple usually have breakfast at ____ 'clck.
A.five B.seven C.nine
11．( )h __ __ dr __ d (一百)
A.un; a B.au; e C.un; e
12．( )There are thirty children: fifteen bys and ____ girls.
A.ten B.twenty C.fifteen
13．( )Ten plus twelve is ____.
A.twenty-ne B.twenty-tw
14．( )There are ____ minutes in an hur.
A.ten B.thirty C.sixty
15．( )Twelve and (加) six is ____.
A.seventeen B.sixteen C.eighteen
二、填空题
16．根据实际情况或括号中的提示来填空。
(1)There are days in a year.
(2)There are letters in the English alphabet.
(3)Lessn One is the lessn.
(4) (3+6=9).
(5)一Which mnth cmes after January?
一 (二月) cmes after January.
(6)一What's the time?
一It's (10点钟).
(7)一When is yur birthday?
一It's (5月10日).
(8)一Hw ld are yu?
一I'm (14岁).
17．在横线上填上适当的数字，好好想一想哦！
(1)There are letters in the alphabet (字母表).
(2)There are seasns (季节) in a year.
(3)There are always traffic lights.
(4)There are days in a week.
(5)There are days in September.
(6)There are hurs (小时) in a day.
18．根据句意填空。
(1)Children's Day (儿童节) is n the day f June.
(2)There are mnths (月) in a year (年).
(3)Teachers' Day (教师节) is n the day f September (九月).
(4)Three plus (加) six is .
(5)February (二月) is the mnth f a year.