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1、Unit 7,数 词,什么是数词？,表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。表示数目多少的数词叫基数词；表示顺序的数词叫序数词。,基数词,one,two,three,four,five,six,seven,eight,seven,six,three,zero,nine,two,one,eight,four,five,numbers,seven,six,three,zero,nine,two,one,eight,four,five,Numbers are widely used.,Hello ，86861873 -,Title,Number song,Lets sing a s
2、ong ！,Lets count!,1-10 one two three four five six seven eight nine ten 11-19 eleven twelve thirteen forteen fifteen sixteen seventeen eighteen nineteen,Lets review,10,20,30,40,50,60,70,80,90,100,ten,thirty,forty,seventy,sixty,One hundred,fifty,ninety,twenty,eighty,one -first,two-second,three-third,
3、four-fourth,five-fifth,six-sixth,seven-seventh,eight-eighth,nine-ninth,ten-tenth,序数词,twenty-twentieth,thirty-thirtieth,forty-fortieth,fifty-fiftieth,sixty-sixtieth,seventy-seventieth,eighty-eightieth,ninety-ninetieth,tenth,ninth,eighth,seventh,sixth,fifth,fourth,third,second,first,ordinal numbers,te
4、nth,ninth,eighth,seventh,sixth,fifth,fourth,third,second,first,一、二、三，特殊记，加th从4起，八少“t”，九去“e”，“ve”要用“f”替，(five, twelve)见“y”变成“i”和“e”，词尾加上“th”，(twenty,thirty,-ninety)若是遇到几十几，只变个位就可以。,ordinal numbers(序数词 ),作业,二.把基数词改为序数词。 1.one 2.two 3.three 4.five 5.nine 6.eight 7.twelve 8.fourteen 9.twenty 10.twenty-o
5、ne 11.forty-four 12.ninety-six,1.first 2.second 3.third 4.fifth 5.ninth 6.eighth 7.twelfth 8.fourteenth 9.twentieth 10.twenty-first 11.fourty-fourth 12.ninth-sixth,三、 用括号内所给数词的正确形式填空。 1. We are in Class_（3）. 2. We have_（12）months of the year. December is the _（12）month.3.There are _(7)of a week.4. M
6、y birthday is Dec._（21）. 5. I have_（3）books. 四、 选择题。 1. My grandmother is_ old. A. seventieth B. seventy year C. seventy years D. seventies 2. Monday is the second day, and_. A. Tuesday is the fourth B. Thursday is fifth C. the second day is Tuesday D. the second day is Thursday 3. There are _months in a year. December is the _month of the year. A. twelve; twelve B. twelve; twelfth C. twelfth; twelve D. twelve; twelveth 4. Whats the date today? It is _. Friday B. time to go C. cloudy D. June 4th 5. What is five and eight? A. Twelve B. Thirteen C. Fourteen D. Fifteen,Thank You !,
