《英语加减乘除》ppt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,*,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,*,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,*,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,*,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,*,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,*,英语的加减乘除,英语的加减乘除,加,plus,add,加,plus(,介词，作形容词时，是正的，等同于,positive)add,（动词）,4,plus,3 equals 7.If you,add,4,to,3 you get 7.,Her mark was B plus,。她的分数,B+,。,加 plus,add加 plus(介词，作形容词时，是正的,减,minus,subtract,减,minus,（介词，作形容词讲时，是“负的”的意思，相当,negative,）,subtract,（动词，常与,from,连用）减去；扣除,12,minus,7 leaves 5.,十二减去七剩五。,If you,subtract,3,from,5,you get 2.The temperature was minus 20 degrees.,温度是零下,20,度。,减 minus,subtract减 minus（介词，作,乘,multiply,乘,multiply,（动词）,3,multiplied by,5 is 15.,三乘五等于十五。,乘 multiply乘 multiply（动词）,除,divide,除,divide,（动词）,15,divided by,3 is 5.3,除,15,等于,5,。,Three will not divide into eleven.,三除不尽十一。,除 divide除 divide（动词）,加减乘除的名词形式如下,1.addition,加法,2.subtraction,减法,3.multiplication,乘法,4.division,除法,加减乘除的名词形式如下,2+3=5,Two plus three is(equals,is equal to)five.,5-3=2,Five minus three is equal to two.,32=6,Three times two is six.,Three by two are six.,93=3,Nine divided by three makes three.,2+3=5,Can you read?,(1),年号的读法：,1979nineteen seventy-nine or nineteen hundred(and)seventy-nine;,(2),电话号码、货币的读法：,1023one o two three;,1227one double two(or two two)seven;.,25four dollars(and)twenty-five(cents);,(3),小数点的读法：,13.91thirteen decimal(point)nineone;,0.23=nought demical two three;,Can you read?(1)年号的读法：,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.,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,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,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）,9.基数词常与名词连用构成复合定语，中间要用连字符，an,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,5.,日期的表达一般用序数词,月日,March 8(th),读作：,March the eighth,6.,用于最高级前表示“第二、第三,“,the second most useful the third largest city,7.second,third,等与“,a“,连用，表示”,又一，再一,”,再一次,a second,time,8.,在,世纪：,in the twenty-first century,in the nineteenth century,5.日期的表达一般用序数词6.用于最高级前表示“第二、第,概数的表示法,over/above/more than+,数字,或：,数字,odd (,多以上）,over/more than two years(,两年多）,above twenty pounds(,磅以上）,thirty,odd,years(30,多年）,=,more than,30 years,2.,below/under/less than+,数字,（不足不到,，,以内）,below six days under two hours less than 60 miles,3.about/nearly/some/toward(s)/more or less+,数字,数字,or so/,more or less,(,大约近,，,上下左右）,about 90 yards nearly one tenth,some fifty feet nine kilos or so,more or less 20 meters=20 meters more or less,概数的表示法over/above/more than+,“,每隔”与“每逢”的表示法：,两种结构：,every+,基数词 复数名词,every+,序数词单数名词,every four days,every fourth day,每四天（每隔三天）,every three lines,every third line,每三行（每隔二行）,每隔一天：,every other day,every two days,every second day,The bus runs every five minutes.,One in every twenty students is to be chosen as the representative.,“每隔”与“每逢”的表示法：两种结构：every four,一些数学公式、小数和分数的表示法：,7X3=21 Seven times/multiplied by three is twenty-one.,93=3 Nine divided by three is 3.,3.5 three point five,a(one)half 1/3 one third,a/one fourth a/one quarter,4/5 four fifth,s,12/23 twelve twenty-third,s,一些数学公式、小数和分数的表示法：7X3=21 Seven,英、美楼层的不同表示法：,英、美楼层的不同表示法：,英语加减乘除ppt课件,