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单击此处编辑母版标题样式,编辑母版文本样式,第二级,第三级,第四级,第五级,2021/9/29 Wednesday,#,数词,重点:,数词的分类;,基,数词与序数词的构词法和常见用法;,数词的常见应用。,数词重点:,1,1.,(,2017,贵州省分类考试),_,trees are cut down in the forest every year.,A.Thousand B.Thousands of,C.Thousand of D.Thousands,【,剖析,】hundred,thousand,million,这一类数词,如果表示准确的数字(前面有数字),只能用单数形式。如果前面没有数词,表示“数百,/,千,/,百万,”,时,则用复数形式与,of,连用构成。本题表示“数千人”,则用,thousands of,。故选,B,。,1.(2017贵州省分类考试)_ trees are,2,2.,(,2017,贵州省分类考试),_is the most important in this book.,A.The Lesson Two B.The second lesson,C.Lesson second D.Second lesson,【,剖析,】,考查序数词。用数词表示顺序有两种常见的形式:“,the+,序数词,+,名词”或“名词,+,基数词”,第二种情况需用作专有名词。本题中“第二课”可表示为“,the second lesson”,或“,Lesson Two”,。故选,B,。,2.(2017贵州省分类考试)_is the mos,3,数词,什么是数词?,There are _ students in the picture.,The _ one is LX.,There are _ students in our school.,数词,:表示,数目多少,或,先后顺序,的词,基数词,:表示数量多少,序数,词,:表示先后顺序,six,first,thousands of,数词什么是数词?sixfirstthousands of,4,基数词,基数词,5,基数词的构词规律(,1,),one,two,three,four,five,six,eight,nine,ten,eleven,twelve,1-12,,,独立成词,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen,13-19,,,以,-teen,结尾,twenty,thirty,forty,fifty,sixty,eighty,ninety,20-90,的整十位,,以,-ty,结尾,基数词的构词规律(1)one,two,three,fo,6,基数词的构词规律(,2,),thirty-two,eighty-five,21-99,,,十位和个位之间加连字符,three hundred and twenty-one,101-999,,,百位和十位个位之间加,and,two thousand five hundred and ten,1000,以上,,数词,+thousand+,数词,+hundred+and+,十位个位,基数词的构词规律(2)thirty-two,eighty-,7,基数词构词法,类型,构成方法,例词,1-12,独立成词,one,two,three,13-19,以,-teen,结尾,thirteen,fourteen,fifteen,20-90,的整十位,以,-ty,结尾,twenty,thirty,forty,21-99,十位和个位之间加连字符,thirty-two,eighty-five,101-999,百位和十位个位之间加,and,three hundred and twenty-one,1000,以上,数词,+thousand+,数词,+hundred+,and,+,十位个位,two thousand five hundred,and,ten,基数词构词法类型构成方法例词1-12独立成词one,two,8,基,数词的用法,hundred,thousand,million,billion,表示,精确数值,时,均用单数,Five,hundred,people,五百人,Seven,thousand,students,七千,名学生,hundred,thousand,million,billion,表示,不确定的数量,时,即表达几十、几百、数千、数百万时,用以下结构:,hundreds,of,数百,thousands,of,数千,millions,of,数百万,dozens,of,几十,基数词的用法hundred,thousand,milli,9,基,数词的用法,_ tress are cut down every year.,thousandB.Thousands of,Thousand of,D,.Thousands,We planted two _ trees in the school this year.,hundredsB.hundred,C.hundreds ofD.hundred of,基数词的用法_ tress are cut down,10,基,数词的用法,基数词,可以和,名词,构成,合成形容词,,但其中的名词只能用,单数形式,,且基数词与形容词用,连字符“,-,”,连接。,例如:,a,three-day,holiday,一个,3,天的假期,an,eight-year-old,girl,一个,8,岁的女孩,He wrote _ article last week.,a 800-wordB.800-wordsC.800-wordD.an 800-word,The problem is difficult for a _ boy.,A.ten-years-oldB.ten-year-oldC.ten-year oldD.ten year-old,基数词的用法基数词可以和名词构成合成形容词,但其中的名词只能,11,序数词,序数词,12,序数,词构词法,基变序,有规律,词尾要加,th,123,,特殊例,结尾字母,tdd,八,去,t,,,九,去,e,,,ve,要用,f,替,,ty,改,y,为,i,,,th,前面有个,e,,,若要遇到,几十几,,前用基来后用序,;,请根据口诀,写出以下基数词的序数词:,one,two,three,five,six,eight,nine;,twenty-three,thirty,forty,序数词构词法基变序,有规律,词尾要加th,13,基数词,序数词,基数词,序数词,one,first,nine,ninth,two,second,ten,tenth,three,third,twenty-three,twenty-third,four,fourth,thirty,thirtieth,five,fifth,forty,fortieth,six,sixth,seven,seventh,eight,eighth,基数词序数词基数词序数词one firstnineninth,14,序数,词构词法,类型,构成方法,例词,one,two,three,单独记忆,first(1,st,),second(2nd),third(3rd),4-19,基数词尾加,th,fourth,seventh,tenth,表示,“,第几十,”,去掉基数词尾,y,加,ieth,twentieth,thirtieth,fortieth,表示,“,第几十几,”,十用基个用序,,,中间,有个连字符,twenty-first,ninety-eight,Hundred,thousand,million,词尾加,th,hundredth,thousandth,millionth,序数词构词法类型构成方法例词one,two,three单,15,序数,词的用法,表示,顺序,。例如:,January is the,first,month of the year.,一月是一年中的第一个月。,表示,第几次,。例如:,This is my,second time,to visit the Great Wall.,这是我第二次参观长城。,序数词的用法表示顺序。例如:,16,序数,词的用法,序数词前用,不定冠词,a/an,,表示“,又、再,”。例如:,Ill have to do it a second time.,我得再做一次。,序数词加,定冠词,the,,表示,第几,。,Lucy is,the,second child of hers.,露西是她的第二个孩子。,但当序数词前有,形容词性物主代词,或,名词所有格,修饰时,,前面,不加“,the”,。,Lucy is,her,second child.,露西是她的第二个孩子。,序数词的用法序数词前用不定冠词a/an,表示“又、再”。例,17,数词的常见用法,数词的常见用法,18,数词常见用法,表示编号,结构:,名词(大写),+,基数词(大写),=the+,序数词,+,名词,Lesson Fourteen=the fourteenth lesson,The tenth unit,=_,练习,-How many new words are there in _ lesson?There are only _.,A.five;fifthB.the fifth;fiveC.fifth;the five,September is _ month of the year.,A.ninthB.the ninthC.nineth,数词常见用法表示编号,19,数词常见用法,表示时刻,小时,+,分钟,3:40 three forty9:05 nine 0 five3:00 three oclock,10:118:50,分钟,+,小时,分钟,past,小时:几点过几分(前,30,分钟),4:25,3:15,分钟,to,小时:差几分到几点(后,30,分钟),4:55,7:45,半:,half,,,15,分钟:,a quarter,一点,半,三点四十五,数词常见用法表示时刻,20,数词常见用法,表示时刻,思考:中文里有,24,小时,英语有没有?,借助,a.m.,p.m,.,表达,上午和下午,ante/post meridiem,(子午线),上午十点,10:00 a.m.,晚上十点,10:00 p.m,.,中午,12,点与晚上,12,点怎么表示,?,12:00,a.m.,(凌晨,12,点),12:00 p.m.,(正午,12,点,),数词常见用法表示时刻,21,数词常见用法,表示日期和年份,日期,格式,中文:,【,年月日,】2021,年,9,月,15,日,英文:,【,月日,年,】September,15th,2021,September,the fifteenth,2021,月份词汇回顾,询问,日期,-Whats the,date,today?,(日期),-Its Oct.12th.,数词常见用法表示日期和年份,22,数词常见用法,表示日期和年份,询问,星期,(,星期词汇回顾,),What is the,day,today?,Its Monday.,询问,时间,-Whats the,time,?,Its twenty past ten.,数词常见用法表示日期和年份,23,数词常见用法,表示日期和年份,表示,世纪与年代,“,in the+,逢十的基数词的复数,/,阿拉伯数字,+s(s),”,十九世纪八十年代(,1880,),in the 1880s/in,the,1880s(,in the eighteen,eighties),(,注意:世纪,=,年份,+1,,如,21,世纪是,20 xx,,,20,世纪是,19xx,),练习:,_,Coca-Cola began to enter Chinas market.,A,.In,1970sB,.In,1970sC,.in the,1970sD.i
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