基数词和序数词完整版课件.ppt

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1、,Nice to meet you!,Welcome,one little,two little,three little indians.four little,five little,six little indians.seven little,eight little,nine little indians,ten little indian boys.ten little,nine little,eight little indians.seven little,six little,five little indians.four little,three little,two l

2、ittle indians,one little indian boy.,Ten Little Indian Boys,数词,Numbers,数词,基数词:,表示数量的词,序数词:,表示顺序的词,数词,基数词的构成,0-12是独立的单词,zero,one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,13-19带有后缀teen,20-90各整十位数带有后缀 ty,21-99十位和个位数之间要用连字符号“-”,101-999,thirteen,fourteen,fifteen,sixteen,seventeen,eighte

3、en,nineteen,twenty,thirty,forty,fifty,sixty,seventy,eighty,ninety,如:21,seven hundred and eight,99,twenty-one,ninety-nine,构成特点,单 词,three hundred and fifty-nine,一般基数词变为序数词,four,fourth,seventh,sixth,six,seven,直接在词尾加 th,特殊的基数词变序数词,first,second,third,eighth,ninth,fifth,twentieth,fortieth,ninetieth,twenty

4、-first,forty-fourth,one hundred and first,twelfth,one hundred and one,first,second,third,eighth,ninth,fifth,twentieth,fortieth,ninetieth,twenty-first,forty-fourth,one hundred and third,twelfth,one hundred and three,让我们来找找其中的规律,巧记基数词变序数词,一二三，要牢记八去t，九去e，f代 vety结尾很容易，改y为i加上eth结尾是标记，数大数小没关系末尾数字起变化，得心应手不

5、费力,1、表示页数；号码；公共汽车路线；学校；医院；年级；班级；年份等,例如：,page 1 读作page one,Class Two,Grade Seven,数词的基本用法,nineteen ninety-eight,2、表达时刻：,数词的基本用法,例如：,at five(oclock)；,at four ten 或 at ten past four,at six fifty 或 at ten to seven,（整点）,（分钟数小于30）,（分钟数大于30）,3、分数的表达法,分数由基数词和序数词合成：分母用序数词，分子用基数词；分子在前，分母在后。当分子大于1时，分母用复数形式。,one

6、 third,two thirds,one fifth,three fifths,母序，子基；子前，母后。,巧记分数表达法：,数词的基本用法,4、hundred、thousand、million 的用法,如果表示具体的几百、几千、几百万时，三个单词后都不用复数形式；如果用了复数形式，要跟of连用，构成固定的搭配。hundreds of 成百上千的 thousands of 成千上万的 millions of 数以百万计的,数词的基本用法,数词的基本用法,5、由基数词构成的复合词，名词 不用复数形式,而且单词之间必须用连词符号“-”连接。,一个五岁的男孩：,一百一十米跨栏：,例如：,a five

7、-year-old boy,110-metre hurdles（跨栏）,要小心哦！,1、-What class are you in,Mike?-Im in _.A Grade Three,Class Two B Class Two,Grade ThreeC class two,grade three D grade three,class two 2、_Iraqi（伊拉克的）any thousand of D Thousands,小试牛刀,B,B,A,3.Liu Xiang,21,is an Olym.A 110-metre B 110-metres C 110 metre4.We have

8、 only _(first)earth.We must take good care of it.5.-Where will we have our chemistry lesson this afternoon?-In the chemistry lab on the_(three)floor.,小试牛刀,one,third,Thank you!,考点练习,is the _ month of the year.A.twelve B.twelveth C.twelfth of the newsily,They live on the _ floor in a tall building.A.six,eighteenth B.six,eighteenC.sixth,eighteen D.sixth,eighteenth,C,B,A,of the two rulers are broken.I want to buy a _ one.A.three B.forth C.third D./5._ etown（家乡）during the war.(战争)A.Three thousands B.Thousand of C.Seven thousands D.Thousands of,考点练习,C,D,