中考英语数词复习ppt课件.ppt
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1、Numerals数词数词Numeralswarmingup1._tresswereplantedonthemountainlastyear.A.ThousandsofB.ThousandofC.FivethousandofD.Fivethousands.2_ofthestudentsaregirlsinourclassATwothreeBTwothreesCTwothirdsDSecondthree3.-Whenwasheborn?-Hewasbornon_.A.secondofOctoberB.theOctoberthreeC.OctoberthesecondD.threeofOctober
2、3表示数目多少或顺序多少的词叫表示数目多少或顺序多少的词叫数词,数词分为基数词和序数词。数词,数词分为基数词和序数词。表示数目多少的数词叫表示数目多少的数词叫基数词基数词;表;表示顺序的数词叫示顺序的数词叫序数词序数词。4基数词的构成基数词的构成1)112,独立成词。独立成词。onetwothreefourfivesixseveneightnineteneleventwelve2)13-19,由由39+teen构成。构成。14fourteen16-sixteen17-seventeen19nineteen特殊拼写特殊拼写:13thirteen15-fifteen18eighteen3)2090
3、,以以-ty结尾。结尾。20twenty30-thirty40forty50fifty60-sixty70-seventy80-eighty90ninety 4)2199,两位数,十位与个位之间有两位数,十位与个位之间有“”。21twentyone55fiftyfive99ninetynine5)101999,三位数,百位与十位,三位数,百位与十位/个位之间加个位之间加and。101onehundredandone840eighthundredandforty693sixhundredandninety-three 529,43150076,thousandhundredmillionbill
4、ionand6)1,000以上数目以上数目,从右向左每三位用从右向左每三位用“,”分开分开,分别读为分别读为thousand,million,billion基数词的构成基数词的构成6基数词的构成基数词的构成65004317296500431729six billion,five hundred six billion,five hundred million,four hundred and million,four hundred and thirty-one thousand thirty-one thousand seven hundred and seven hundred and t
5、wenty-ninetwenty-ninefour thousand three hundred and twenty-oneseven million,six hundred and fifty four thousand three hundred and twenty-one7,654,3211,987,654,32143214,321one billion,nine hundred and eighty-seven million,six hundred and fifty-four thousand three hundred and twenty-one1.hundred thou
6、sand (表示具体数字表示具体数字)million billion2.hundreds thousands (表示概数表示概数)millions billions三三.基数词的用法基数词的用法数词数词(several)+)+ofthe/some/many/these/those hundreds of基数词的用法基数词的用法1、表示表示具体具体数目数目,hundred,thousand,million不用复数不用复数表示表示不确定不确定数目数目,用用复数。复数。即即hundredsof(数百数百),thousandsof(数千数千),millionsof(数百万数百万)+名词复数。名词复数。
7、1)Ourcountryhasapopulationof1,300millionpeople.2)Thereareseveralthousandstudentsinourschool.3)Afterthewar,thousandsofpeoplebecamehomeless.1.If a=3,b=4,whats the answer to the problem,a+2ab+1=?the answer is_.A.twenty eight B.twenty-eighth C.twenty-eight2.In our school about five _ students are able t
8、o surf the Internet.A.hunderd of B.hunderds of C.hundred3._ sheep were killed in the accident.A.Thousand of B.Thousand C.Thousands of4.There are over nine _ workers in the factory,but _ of young people hope to work in it.A.hundred 0f;hundreds B.hundred;hundreds C.hundreds;hundred5.5.people in the wo
9、rld are sending people in the world are sending information by e-mail every day.information by e-mail every day.A.Several million B.Many millionsA.Several million B.Many millionsC.Several millions D.Many millionC.Several millions D.Many million A序数词的构成序数词的构成1)13,first,second,third。2)419,相应基数词相应基数词+t
10、h,fourth,fifth,sixth,seventh,eighth,ninth,tenth,eleventh,twelfth,thirteenth,fourteenth,fifteenth,sixteenth,seventeenth,eighteenth,nineteenth.3)2090,y变成变成ie+th,twentieth,thirtieth,fortieth,fiftieth,sixtieth,seventieth,eightieth,ninetieth。4)2199,只把个位的基数词变成序数词只把个位的基数词变成序数词如如twenty-first,ninety-ninth5)序
11、数词缩写序数词缩写-数字最后两字母数字最后两字母如如1st,2nd,3rd,4th基变序基变序,有规律有规律,词尾加上词尾加上“th”,一、二、三,特殊记,结尾字母一、二、三,特殊记,结尾字母t,d,d八去八去“t”,九去,九去“e”,“f”要把要把ve替替见见“y”变成变成“i”和和“e”,词尾加上,词尾加上“th”,若是遇到几十几,只变个位就可以。若是遇到几十几,只变个位就可以。序数词缩写记清楚序数词缩写记清楚,数字后跟两字母。数字后跟两字母。(序数词构成规律)15基数词基数词序数词序数词基数词基数词序数词序数词oneonetweltwelvevetwotwotwenttwenty yth
12、reethreetwentytwenty-one-onefofou ur rfortforty yfi fiveveone hundredone hundredsixsixone hundred one hundred andand five fiveeigheight tone hundred one hundred and twenty-and twenty-ninenineninnine eninnine eteenteen一一.基数词、序数词基数词、序数词firstsecondthirdfourthfifthsixtheighthninthtwelfthtwentiethtwenty-
13、firstfortiethone hundredthone hundred and fifthone hundred and twenty-ninthnineteenth时间类型时间类型表示法表示法例例读法读法整点整点基数词(基数词(+oclock)1:0030分钟分钟分钟分钟+past+小时小时 2:10=30 分钟分钟half+past+小时小时3:3030分钟分钟(60-分钟)分钟)+to+(小时(小时+1)4:40分钟逢分钟逢15即即 一刻钟一刻钟a quarter5:156:45简化法简化法按顺序读基数词按顺序读基数词7:50one oclockten past twohalf pa
14、st threetwenty to fivea quarter past fivea quarter to sevenseven fifty表示在几点钟用介词表示在几点钟用介词 at数词的表示法数词的表示法 时间时间1.Its already 7:40 now.When will the film start?_.We still have five minutes.A.A quarter to seven B.A quarter to eight C.Seven past forty-five 月日年月日年 在在1998年年10月月1日日数词的表示法数词的表示法 年月日年月日on Octor
15、ber the first,nineteen ninety-eight日日the+序数词序数词月月(首字母大写)(首字母大写)月日与年之间月日与年之间用用 ,分开分开年年(两位两位读)(两位两位读)on August the ninthin May,two thousand and ten天天日用日用 on 年月年月用用inon Oct.1st,1998月日月日在在8月月9日日月年月年在在2010年年5月月 1.The accident happened on_.A.April 5,2001 B.2001,April 5 C.April 2001,5 2.I was born _.A.in M
16、arch 8,1993 B.on July 9,1994 C.on May,199520世纪90年代in the 1990s/1990s在他50多岁时in his fifties数词的表示法数词的表示法 1.1.年代世纪年代世纪in thein ones+整十基数词复数在某人几十岁时nineteen nineties2、“基数词基数词+名词名词”的的合成形容词合成形容词作定语,作定语,中间有连字符中间有连字符“”,当中的名词用当中的名词用单数单数。a3yearoldgirlaseven-dayholiday3、表计量、表计量-“基数词基数词+度量单位度量单位+形容词形容词”Theclassro
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