小升初英语语法-序数词和基数词

Module6序数词和基数词英语上的数词分为两大类：基数词和序数词。一、基数词（cardinal

number）1.定义：描述事物数量的多少，表示数目的数词称为基数词。基数词主要表示事物或人物的个数。2、基数词形式（1）百位数个数基数词形式加“hundred”，表示几百，在几十几与百位间加上and．例子：101ahundredandone648sixhundredandforty-eight（2）基数词在表示确切的数字时，不能使用百、千、百万、十亿的复数形式；但是，当基数词表示不确切数字，如成百、成千上万，三三两两时，基数词则以复数形式出现。Therearehundredsofpeopleinthehall．大厅里有数以百计的人。ThousandsandthousandsofpeoplecometovisittheMuseumeveryday．每天有成千上万的人来参观博物馆。二、序数词（OrdinalNumbers）1、定义：序数词是指表示顺序的数词，一般由与之相应的基数词加th构成(但有特殊形式需特别记忆)汉语中表示为“第几”。序数词主要用作定语，前面一般要加定冠词the(或物主代词)。如：Theirsecondsonisadoctor.他们的二儿子是个博士。Ilikethefirstmovie.我喜欢第一部电影。此外，在描述日期时，也会用到序数词。比如：May-first（5月1日）Whatdateisit?It’sthefifthofJune.月份：JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember基数词和序数词的关系图阿拉伯数字123456789基数词onetwothreefourfivesixseveneightnine序数词firstsecondthirdfourthfifthsixthseventheighthninth序数词缩写1st2nd3rd4th5th6th7th8th9th阿拉伯数字111213141516171819基数词eleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteen序数词加thtwelfth加th,比如thirteenth,nineteenth序数词缩写11th12th13th14th15th16th17th18th19th阿拉伯数字102030405060708090基数词tentwentythirtyfortyfiftysixtyseventyeightyninety序数词tenth把y变成ie,加th,比如twentieth,fortieth序数词缩写10th20th30th40th50th60th70th80th90th个位数是1、2、3的序数词（除了11/12/13），它们的缩写形式就是特殊的(1st,2nd,3rd),比如21twenty-first,22twenty-second,23twenty-third.基变序，有规律，词尾加上th(fourth,sixth),一二三特殊例，结尾字母t,d,d(first,second,third),八去t,九去e（eighth,ninth）,ve要用f替(fifth,twelfth),ty将y改成i,the前面有个e,若要碰到几十几，前用基来后用序。课堂巩固专项练习1．基数词。

1）写数字1-12

________________________________________________________________________________________________________________________________________________________________2）写数字13-19

________________________________________________________________________________3）写整十。

20__________________

30___________________

40___________________

50___________________

60___________________

70___________________

80___________________

90___________________

100___________________

4）写出下列数字。

21___________________

32___________________

43___________________

54___________________

65___________________

101__________________

210________________________________

375__________________________________

2.写出下列序数词。

1st________________2nd________________3rd______________4th______________5th________________

6th________________70th______________80th______________3.写出下列日期。

9月10日_____________________________12月31日_____________________________6月1日______________________________8月15日_______________________________课后提升专项练习选择填空。

（）1.

There

are

some

_____

in

our

classroom.

hundred

of

books

B.

the

hundreds

of

books

C.

hundreds

of

books（）2.

There

are

____

students

in

our

school.

A.

four—hundredandforty—five

B.

four

hundreds

and

forty—five

C.

four

hundred

and

forty

five

（）3.

Wehave_____

weeksinaterm.

A.

twenty

B.

thetwentieth

C.thetwenty（）4.

May

is

____month

of

a

year.

A.

fifth

B.

the

fifth

C.

five（）5.

We

live

on

______.

A.

thetwenty-three

B.

twenty-thirdC.thetwenty-third（）6.

Is

Monday

the

____

day

of

the

week?

A.

a

B.

one

C.

first

（）7.

March

the

________

is

Women’s

Day.

A.

eighth

B.

ninth

C.

eight

（）8.

September

is

the

_____month

of

the