基数词和序数词初一英语语法PPT讲稿课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,基数词和序数词初一英语语法课件,基数词和序数词初一英语语法课件,1,Numbers,cardinal numbers,(基数词),ordinal numbers,(序数词),Numbers cardinal numbers,基数词(cardinal numbers)的构成及用法:,1.112的基数词是独立单词,无规律可循。,eleven twelve,2.1319的基数词一般在39对应的基数词后加-,teen,构成，注意：,thirteen fifteen eighteen,3.2090八个整十位数以后缀-,ty,结尾。注意：,twenty(20)thirty(30)forty(40)eighty(80),4.“几十几“的基数词由十位数和个位数中间加,连字符 “,-,”构成：,twenty,-,nine ninety,-,seven,基数词(cardinal numbers)的构成及用法:1.,1,1,12,的基数词是独立的单词，即：,one,，,two,，,three,，,four,，,five,，,six,，,seven,，,eight,，,nine,，,ten,，,eleven,，,twelve,。,2,13,19,的基数词以,-teen,结尾。如：,fourteen,，,seventeen,等，但,13,，,15,，,18,较特殊，,13,thirteen 15,fifteen,18,eighteen,。,3,20,90,的整十位均以,-ty,结尾。如：,sixty,，,ninety,，但,20,，,30,，,40,，,50,，,80,较特殊，,20,twenty 30,thirty 40,forty,50,fifty,80,eighty,。,4,十位数与个位数之间要加连字符号“,-,”，如：,28,twenty-eight,，,96,ninety-six,5,百位和十位（若无十位则和个位）之间加,and,，如：,148,one hundred and forty-eight 406,four hundred and six,。,1112的基数词是独立的单词，即：one，two，th,基数词,基数词10,基数词10,复合词,one(1),eleven(11),ten(10),two(2),twelve(12),twenty(20),twenty-two(22),three(3),thirteen,(13),thirty,(30),thirty-three(33),four(4),fourteen(14),forty,(40),forty-four(44),基数词基数词10基数词10复合词 one(1)e,five(5),fifteen,(15),fifty,(50),fifty-five(55),six(6),sixteen(16),sixty(60),sixty-six(66),seven(7),seventeen(17),seventy(70),seventy-seven(77),eight(8),eighteen,(18),eighty,(80),eighty-eight(88),nine(9),nineteen(19),ninety(90),ninety-nine(99),five(5)fifteen(15)fift,5.百位数和十位数之间，在英国英语要用 “and”连接，在美国一般不用。,three hundred,and,five four hundred,and,forty-five,6.英语中“万”及以上的表示法：,53,461,fifty-three thousand,six hundred and forty-one,30,045,310,thirty million and forty-five thousand,three hundred and ten,3,333,333,333,5.百位数和十位数之间，在英国英语要用 “and”连接,100以上的大数词有：,a hundred 一百（100）,a thousand 一千（1,000）,ten thousand一万（10,000）,a hundred thousand十万（100,000）a million(=a thousand thousand一百万1,000,000）,ten million一千万（10,000,000）,a hundred million一亿（100,000,000）,a billion(=a thousand million)十亿（1,000,000,000）,100以上的大数词有：,7.hundred,thousand,million,billion前有确切数词时，,遵循“两个无”原则，即无“s”，无“of”。,three hundred people nine million books,8.但hundred,thousand,million,billion前无确切数词时，则遵循“两个有”原则，即有“s”和“of”。,many thousand,s,of,trees,million,s,of,birds,ten,s of,thousand,s,of,soldiers,three hundreds people three hundred of books,7.hundred,thousand,million,有时，可以在大数词（单数形式）前加上several,a few等词，表示含糊数量，例如：several hundred times好几百次，a few million years几百万年。,100以内的基数词有时也可用复数形式，表示一些特别的意义。例如：,They went to the theatre in twos and threes.,他们三三两两地来到了剧院。,The girl is in her teens.,这个女孩不到二十岁。,He became a professor in his thirties.,他三十多岁时成为了教授。,It was in the 1960s.,那是在二十世纪六十年代。,有时，可以在大数词（单数形式）前加上several,a f,在乘法运算的一种表示法里，如：3 x 5=15 Three fives is(are)fifteen.,1,数词作主语，谓语动词用单数。如：,Two months is quite a long time,Four and two is six,Whats two and three,？,2,一个半小时（一年半，一个半月可类推）,one,an hour and a half,one and a half hours,特殊用法,在乘法运算的一种表示法里，如：3 x 5=15 Th,9.基数词常与名词连用构成复合定语，中间要用连字符，,而且只用名词的单数形式,an 8oo-hundred-word composition,a five-week holiday a 20-meter-tall building,10.基数词可以表示年代、时刻、住所、房间、教室、电话号码等。,in 1980s (1980s)in nineteen eighties,Page three Room 403,at seven thirty in 1991(in nineteen ninety-one),in ones fifties(在某人多岁的时候）,有时在物主代词后面可加上形容词,early,mid,或,late,使其含义更确切些。如：,The young man is at most in his early thirties.,9.基数词常与名词连用构成复合定语，中间要用连字符，an,“,名词基数词,”,结构具有,“,序列,”,的意义，例如：,Room Four,四号房间，相当于,the Fourth Room,；,Lesson Five=the Fifth Lesson,第,5,课。,10,句型：主语,is,about,（大约）,over,more than,（超过）,nearly,（接近）具体数词,metre,（,s,）,kilometre,（,s,）,kilo,（,s,）,long,high,tall,deep,away,等。如：长江长,6300,公里。,The Changjiang River is 6,，,300 kilometres long,“名词基数词”结构具有“序列”的意义，例如：Room,或者用基数词+单位词+in+名词（length，width，height，weight等）表示。,two meters long或 two meters in length 2米长,three feet high或 three feet in height 3英尺高,four inches wide或 four inches in width 4英寸宽,five minutes walk,Its an hours ride from my hometown to our university,Its seven degrees below zero,/above,今天是零下七度。（摄氏）,或者用基数词+单位词+in+名词（length，w,注意下列习惯表达方式：,half an hour half a kilo,two and a half kilos=two kilos and a half,one or two days =one day or two,eighty meters long,one thousand miles away,five meters deep(wide/tall/high/long),five meters in depth/width/height/length,注意下列习惯表达方式：five meters in dep,序数词(ordinal numbers)的构成及用法:,基数词 one,two,three 的序数词分别为:,first,second,third (1st 2nd 3rd),2.从第四到第十九的序数词在基数词后加“-,th,”注意：,fifth eighth ninth twelfth,3.十位整数基数词的序数词需将词尾的“y”改为“i”，,再加“eth”构成 twenty twentieth,forty fortieth ninety ninetieth,4.“几十几”的数及位数以上基数词的序数词,只将个位变成序数词即可,one hundred,th,one thousand,th,four hundred and thirty-,second,序数词(ordinal numbers)的构成及用法:基数词,1,基数词变序数词可利用口诀巧记：“一、二、三，特殊记，八去“,t,”，九去“,e,”，“,ve,”要用“,f,”替，见“,y,”变成“,i,”和“,e,”，词尾加上“,th,”，若是遇到几十几，只变个位就可以。”第一、第二、第三分别：,first,，,second,，,third,，,eight,eighth nine,ninth,，,five,fifth,，,twelve,twelfth,，,twen-ty,twentieth,，,forty,fortieth,，,twenty-five,twenty-fifth,。,2,其余情况均在基数词后加,th,。如：,six,sixth,nineteen,nineteenth,hundred,hundredth,thousand,thousandth,等,1基数词变序数词可利用口诀巧记：“一、二、三，特殊记，八去,one,first,1st,two,second,2n