初三英语语法数词

1、初三英语语法数词数词：定义：用来表示人或物的数量的名词 分类：数词分类：数词有基数词基数词和序数词序数词两种。 英语的数词可以作句子的主语、宾语、表语和定语。基数词：基数词：表示数目的词叫基数词基数词。英语中常用的基数词有：1-oneone2-Two2-Two3-Three3-Three4-Four4-Four5-Five5-Five6-Six6-Six7-Seven7-Seven8-Eight8-Eight9-Nine9-Nine10-ten10-ten11-Eleven11-Eleven12-Twelve12-Twelve13-Thirteen13-Thirteen14-Fourteen1

2、4-Fourteen15-Fifteen15-Fifteen16-Sixteen16-Sixteen17-Seventeen17-Seventeen18-Eighteen18-Eighteen19-Nineteen19-Nineteen20-Twenty20-Twenty30-Thirty30-Thirty40-Forty40-Forty50-Fifty50-Fifty60-Sixty60-Sixty70-Seventy70-Seventy80-Eighty80-Eighty90-Ninety90-Ninety100-one(a) hundred100-one(a) hundred23-twe

3、nty-three23-twenty-three35-thirty-five35-thirty-five101-one hundred and one101-one hundred and one1000one(a) thousand,1000one(a) thousand,1000010000 ten thousand,100000 ten thousand,100000one one hundred thousand ,1000000hundred thousand ,1000000one one million,million,10000000ten million, 10000000t

4、en million, 100000000100000000one hundred million,one hundred million,108108one hundred and eight, one hundred and eight, 146146one hundred and forty-six, one hundred and forty-six, 500500five hundred , five hundred , 10011001one thousand and one, one thousand and one, 18131813one thousand eight hun

5、dred one thousand eight hundred and thirteen.and thirteen. 注意事项 (1)百位与十位之间要加andand；十万位和万位,亿位和千万位之间通常也要加andand。 (2)英语用千、百万等单位计数,大数字从右向左看, 每隔三位划一逗号,倒数第一个逗号之前要用thousandthousand,倒数第二个逗号之前要用millionmillion,倒数第三的逗号之前要用billionbillion表示。注意事项 (3) hundredhundred、 thousandthousand、 millionmillion作数词时,不用复数,前面可以加

6、上one, one, two, two, 等其它数词。用作名词时复数表示“成上”,后面必须要有ofof,前面可以加上some,many,severalsome,many,several等词。如：five hundredfive hundred(五百), hundreds hundreds ofof(成百上千的), ten thousandten thousand(一万), thousands ofthousands of(成千上万的), millions millions ofof(成百万的)序序数词：数词：表示顺序的数词叫序数词序数词。 英语的序数词基本变法： (1) 一般在基数词后加tht

7、h, (2)-ve-ve结尾的改为-fth-fth, (3)-ty-ty结尾的改为-tieth-tieth, (4)熟记特殊词。1stfirst21sttwenty-first2ndsecond20thtwentieth22ndt w e n t y -second3rdthird13ththirteenth30ththirtieth23rdtwenty-third4thfourth14thfourteenth40thfortieth5thfifth15thfifteenth50thfiftieth35ththirty-fifth6thsixth16thsixteenth60thsixtiet

8、h7thseventh17thseventeenth70thseventieth8theighth18theighteenth80theightieth9thninth19thnineteenth90thninetieth10thtenth100thone undredth11theleventh101stone hundred and first12thtwelfth1000th1000thone thousandth, one thousandth, 1000000th 1000000th one millionth, one millionth, 第第703703the seven hu

9、ndred and the seven hundred and third, third, 第第54805480the five thousand four the five thousand four hundred and eightieth.hundred and eightieth.注意事项 (1)两位以上的序数词仅个位数部分用序数词,其余部分仍用基数词。如：thirty-sixththirty-sixth, (2) 使用序数词时一般加定冠词the. the. 如：Im Im in in thethe third grade third grade. (3) 序数词作“几分之几”讲时,

10、有复数形式。如：1/5one fifth ; 2/3 two third1/5one fifth ; 2/3 two thirds s ; ; 4/7 four seventh4/7 four sevenths s ; 1/2 a half ; ; 1/2 a half ; 1/4a quarter ; 3/4 three quarter1/4a quarter ; 3/4 three quarters s ; ; 50% fifty hundredth50% fifty hundredths s ( fifty per ( fifty per cent).cent).数词的用法：数词的用法：

11、 1、表示年份：2002: twenty thousand 2002: twenty thousand and two ; 1976 : nineteen seventy-and two ; 1976 : nineteen seventy-six.six. 2、表示日期： 12月1日: Dec.1st Dec.1st或the the first of Decemberfirst of December；2002年11月8日: Nov. 8th, 2002.Nov. 8th, 2002. 3、表示时刻： 5 5：15 five fifteen15 five fifteen或a a quarter

12、 past five ; 8quarter past five ; 8：30 eight 30 eight thirtythirty或half past eight ; 10half past eight ; 10：45 ten 45 ten forty-fiveforty-five或a quarter to eleven.a quarter to eleven.数词的用法：数词的用法： 4、表示编号： 5、小数的读法：5.7 five point sevenfive point seven, 0.16 zero point one sixzero point one six.数词的用法：数词的用法： 6、“半”的表达： 1/2halfhalf, 半小时half an hourhalf an hour, 1.5小时one and a one and a half hourshalf hours或one hour and a halfone hour and a half7 7、序数词前面加、序数词前面加thethe时时, ,表示顺序表示顺序, ,加加a/ana/an时时表示表示“再一、又一再一、又一”。如：。