初中英语数词讲解及专项练习.doc
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初中英语数词讲解及专项练习.doc
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数词
一.数词含义:
数词分为基数词和序数词。
表示数目和数量的词为基数词;表示数目顺序的词为序数词。
二.基数词
基数词
1-100(略)
ten/onehundred/onethousand/tenthousand/onehundredthousand
onemillion/tenmillion/onehundredmillion/onebillion
123onehundrendandtwenty-three
1,234onethusand,twohundredandthirty-four.
12,345twelvethousand,threehundredandforty-five
(千位与百位之间用逗号连接,百位与十位之间用and连接,十位与个位之间用连字符-连接)
threehundred(hundred没有复数,不能加s;hundred前面只能用数字,不能用many和afew)
hundredsof(hundred如果加s,后面必须接of )
fivethousand(thousand没有复数,不能加s;thousand前面只能用数字,不能用many和afew)
thousandsof(thousand如果加s,后面必须接of )
三.讲解序数词
序数词
firstsecondthirdfourthfifth
sixthseventheighthninthtenth
eleventhtwelfththirteenthfourteenthfifteenth
sixteenthseventeentheighteenth
nineteenthtwenty-firsttwenty-second
twentieththirtiethfortiethfiftiethsixtieth
seventietheightiethninetiethonehundredth
四.数词的表示法
LessonThree:
第三课pagefoursixthree:
第463页pagefiveoseven:
第507页
Roomthreeofive:
第305房间:
Seventy-sixChang’anStree:
长安街76号
inhisfifties:
在他50多岁的时候
Januarytwenty-eighthFebruaryfourteenthOctoberfirst
年代:
1978:
nineteenseventy-eight2008:
twothousandandeight
2010:
twothousandandten1900:
nineteenhundred
1908:
nineteenandeight/nineteenhundredandeight
1960s(1960’s):
二十世纪六十年代(inthe1960s/inthe1960’s)
钟点:
8:
45eightforty-five/aquartertonine
9:
15ninefifteen/aquarterpastnine
10:
03tenthree/threepastten
11:
30eleventhirty/halfpasteleven
小数的读法:
1.25:
onepointtwofive3.728:
threepointseventwoeight
0.56:
(zero)pointfivesix/(naught)pointfivesix
百分数的读法:
5% :
fivepercent;20%:
twentypercent;
100% :
onehundredpercent
0.5% :
zeropointfivepercent(naughtpointfivepercent)
分数表示法:
分子用基数词,分母用序数词.分子大于1时,分母用复数形式.
1/5:
onefifth;2/5:
twofifths;1/4:
aquarter/onefourth
3/4:
threequarters/threefourths;
51/2:
fiveandahalf;72/5:
sevenandtwofifths
在数学课上,可以这样读分数:
1/2:
oneovertwo2/3:
twooverthree
3/4:
threeoverfour11/20:
elevenovertwenty
数词专项训练
1.Hebecameafamouswriterinhis.
A.thirtyB.thirtiethC.thirtiesD.thirty’s
2.--Howoftendoyougotothemovies?
--amonth.
A.twoB.secondC.thesecondD.twice
3.Myofficeisonfloor.
A.twelveB.twelfthC.twelvethD.thetwelfth
4.Therearemorethanthreepeopleinthepark.
A.hundredB.hundredsC.hundredsofD.hundredof
5.Theweightofthemoonisonlyaboutoneoftheearth.
A.eightB.eighthC.eightyD.theeighth
6.MrBrown’sroomisonthethirdfloor.
A.Room309B.309RoomC.theRoom309D.the309Room
7.Chinaislargestcountryintheworld.
A.theB.threeC.thirdD.thethird
8.Thereareworkersinthisfactory.
A.fivethousandandtwohundredandsixty-five
B.fivethousandandtwohundredandsixtyfive
C.fivethousand,twohundredandsixty-five
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