上教版八年级英语上第二单元.ppt

unit2 Numbers,part3 Grammer,店上中学 杨阳,Grammer,target: Learn how to use cardinal and ordinal numbers. Learn how to give instructions about numbers.,We use cardinal numbers almost every day.,No.11 Bus,100 yuan,10 past10,基数词,we use cardinal numbers to count things.,0 to 9,10 to 100,large numbers,Can you write the numbers?,102,139,13,45,33,82,91,14,(thirteen),(forty-five),(thirty-three),(eighty-two),(ninety-one),(fourteen),(one hundred and two),(one hundred and thirty-nine),Have a try,4,056= _ thousand and _ 23,813= _ thousand, _ 567,110= _ thousand, _ 6,425,200= _ million, _ _ thousand, _,four fifty-six,twenty-three eight hundred and thirteen,five hundred and sixty-seven one hundred and ten,six four hundred and twenty-five two hundred,Lets work out the rules,In the cardinal numbers, we do not add _to hundred, thousand, and million. With large numbers, we put _between hundred and ten.,-s,and,Practise,285,643,3,367,982,82,102,200,375,4,189,15,362,(eighty-two),(one hundred and two),(two hundred),(three hundred and seventy-five),(four thousand one hundred and eighty-nine),(fifteen thousand three hundred and sixty-two),(two hundred and eighty-five thousand six hundred and forty-three),(three million three hundred and sixti-seven thousand nine hundred and eighty-two),Try to read the numbers.,1st first 2nd second 3rd third 4th fourth 5th fifth 6th sixth 7th seventh 8th eighth 9th ninth 10th tenth,11th eleventh 12th twelfth 13th thirteenth 14th fourteenth 15th fifteenth 16th sixteenth 17th seventeenth 18th eighteenth 19th nineteenth 20th twentieth,21st twenty-first 22nd twenty-second 23rd twenty-third 24th twenty-fourth 25th twenty-fifth 26th twenty-sixth 27th twenty-seventh 28th twenty-eighth 29th twenty-ninth 30th thirtieth 31st thirty-first,Ordinal numbers,序数词,Think,We form most ordinal numbers by adding_to the cardinal numbers.Therere exceptions,like _,_,_.,-th,first,second,third,基数词变序数词 表示顺序的数词叫序数词。 基数词变序数词 的规则是： （1） 大部分数词在词尾加th ： 如: fourth（第四） thirteenth（第十三） hundredth（第一百） （2） 表示整十的基数词， 变 y为ie， 再加 th; 如：twentieth 第二十 eightieth第八十 （3） 特殊的序数词有: 第一 first, 第二 second， 第三 third， 第五 fifth, 第八 eighth, 第九 ninth ，第十二 twelfth,1st,first,2nd,second,3rd,third,5th,fifth,8th,eighth,12th,twelfth,9th,ninth,(4) 要把一个“ 几十几” ， “ 几百几” 的基 数词变成序数词，只需把个位数变成序数词。 如: 32-thirty-second 256- two hundred and fifty-sixth (5) 在表示编号的东西时，可以用基数词表示， 也可用序数词表示 如: the first lesson = Lesson One the sixth grade = Grade Six,基变序，有规律,词尾加上th; 一、二、三，特殊记， 词尾字母 t, d, d； 八去t, 九去e; f来把ve替。 若是遇到整十数，变y为ie再加th 若是遇到几十几，只变个位就可以。,基变序口诀：,A,B,C,D,E,F,G,H,I,J,K,L,A is the _,B is the _,C is the _,D is the _,F is the _,G is the _,H is the _,I is the _,J is the _,K is the _,L is the _,The _day of December(十二月) is the Christmas(圣诞节).,twenty-fifth,The_day of September(九月) is the Mid-autumn day(中秋节),nineteenth, plus /add minus/substract multiply divide = equal,instructions,Add 3 and 9 (3+9) 将3与9相加 Substract 3 from 9(9-3) 从9中减去3 Multiply 3 by 9 (39) 将3乘以9 Divide 9 by 3(93) 将9除以3,results,3 plus 9 equals/is 12. (3+9=12) 9 minus 3 equals/is 6. (9-3=6) 3 multiplied by 9 equals/is 27. (39=27) 9 divided by 3 equals/is 3. (93=3),practice,1. s1: A_11 _1. s2:_ _ _equals/is _.(11+1=12) 2. s1:S_5_13. s2:_ m_ _equals/is _.( ) 3. s1:D_16 _4. s2:_d_by_equals/is _.( ) 4. s1:M_7_8. s2:_m_by_equals/is _.( ),In pairs, complete the sent