Module6序數(shù)詞和基數(shù)詞英語上的數(shù)詞分為兩大類：基數(shù)詞和序數(shù)詞。一、基數(shù)詞（cardinal

number）1.定義：描述事物數(shù)量的多少，表示數(shù)目的數(shù)詞稱為基數(shù)詞?；鶖?shù)詞主要表示事物或人物的個數(shù)。2、基數(shù)詞形式（1）百位數(shù)個數(shù)基數(shù)詞形式加“hundred”，表示幾百，在幾十幾與百位間加上and．例子：101ahundredandone648sixhundredandforty-eight（2）基數(shù)詞在表示確切的數(shù)字時，不能使用百、千、百萬、十億的復(fù)數(shù)形式；但是，當(dāng)基數(shù)詞表示不確切數(shù)字，如成百、成千上萬，三三兩兩時，基數(shù)詞則以復(fù)數(shù)形式出現(xiàn)。Therearehundredsofpeopleinthehall．大廳里有數(shù)以百計的人。ThousandsandthousandsofpeoplecometovisittheMuseumeveryday．每天有成千上萬的人來參觀博物館。二、序數(shù)詞（OrdinalNumbers）1、定義：序數(shù)詞是指表示順序的數(shù)詞，一般由與之相應(yīng)的基數(shù)詞加th構(gòu)成(但有特殊形式需特別記憶)漢語中表示為“第幾”。序數(shù)詞主要用作定語，前面一般要加定冠詞the(或物主代詞)。如：Theirsecondsonisadoctor.他們的二兒子是個博士。Ilikethefirstmovie.我喜歡第一部電影。此外，在描述日期時，也會用到序數(shù)詞。比如：May-first（5月1日）Whatdateisit?It’sthefifthofJune.月份：JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember基數(shù)詞和序數(shù)詞的關(guān)系圖阿拉伯?dāng)?shù)字123456789基數(shù)詞onetwothreefourfivesixseveneightnine序數(shù)詞firstsecondthirdfourthfifthsixthseventheighthninth序數(shù)詞縮寫1st2nd3rd4th5th6th7th8th9th阿拉伯?dāng)?shù)字111213141516171819基數(shù)詞eleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteen序數(shù)詞加thtwelfth加th,比如thirteenth,nineteenth序數(shù)詞縮寫11th12th13th14th15th16th17th18th19th阿拉伯?dāng)?shù)字102030405060708090基數(shù)詞tentwentythirtyfortyfiftysixtyseventyeightyninety序數(shù)詞tenth把y變成ie,加th,比如twentieth,fortieth序數(shù)詞縮寫10th20th30th40th50th60th70th80th90th個位數(shù)是1、2、3的序數(shù)詞（除了11/12/13），它們的縮寫形式就是特殊的(1st,2nd,3rd),比如21twenty-first,22twenty-second,23twenty-third.基變序，有規(guī)律，詞尾加上th(fourth,sixth),一二三特殊例，結(jié)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將y改成i,the前面有個e,若要碰到幾十幾，前用基來后用序。課堂鞏固專項練習(xí)1．基數(shù)詞。

1）寫數(shù)字1-12

________________________________________________________________________________________________________________________________________________________________2）寫數(shù)字13-19

________________________________________________________________________________3）寫整十。

20__________________

30___________________

40___________________

50___________________

60___________________

70___________________

80___________________

90___________________

100___________________

4）寫出下列數(shù)字。

21___________________

32___________________

43___________________

54___________________

65___________________

101__________________

210________________________________

375__________________________________

2.寫出下列序數(shù)詞。

1st________________2nd________________3rd______________4th______________5th________________

6th________________70th______________80th______________3.寫出下列日期。

9月10日_____________________________12月31日_____________________________6月1日______________________________8月15日_______________________________課后提升專項練習(xí)選擇填空。

（）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