【语法系列】第12讲 基数词和序数词（小升初）
如图所示：oooooo温馨提示：第2个是白色的。我们数一数有几个o？6个（基数词：表示个数）six六第2个是白色的（序数词：表示第几）second第二常见的基数词和序数词：基数词1-100，下面是归纳......
如图所示：oooooo温馨提示：第2个是白色的。
我们数一数有几个o？
6个（基数词：表示个数）six六
第2个是白色的（序数词：表示第几）second第二
常见的基数词和序数词：
基数词1-100，下面是归纳总结。
如果没有记忆力，学的再多都没有用。
1one2two3three4four5five6six7seven8eight9nine10ten
11eleven12twelve13thirteen14fourteen15fifteen16sixteen17seventeen18eighteen19nineteen
20twenty21twenty-one22twenty-two23twenty-three24twenty-four25twenty-five26twenty-six27twenty-seven28twenty-eight29twenty-nine
30thirty31thirty-one32thirty-two33thirty-three34thirty-four35thirty-five36thirty-six37thirty-seven38thirty-eight39thirty-nine
40forty41forty-one42forty-two43forty-three44forty-four45forty-five46forty-six47forty-seven48forty-eight49forty-nine
50fifty51fifty-one52fifty-two53fifty-three54fifty-four55fifty-five56fifty-six57fifty-seven58fifty-eight59fifty-nine

60sixty61sixty-one62sixty-two63sixty-three64sixty-four65sixty-five66sixty-six67sixty-seven68sixty-eight69sixty-nine
70seventy71seventy-one72seventy-two73seventy-three74seventy-four75seventy-five76seventy-six77seventy-seven78seventy-eight79seventy-nine
80eighty81eighty-one82eighty-two83eighty-three84eighty-four85eighty-five86eighty-six87eighty-seven88eighty-eight89eighty-nine
90ninety91ninety-one92ninety-two93ninety-three94ninety-four95ninety-five96ninety-six97ninety-seven98ninety-eight99ninety-nine
100onehundred
详细分析【必须会】30thirty——13thirteen——3three40forty——14fourteen——4four（特别注意）50fifty——15fifteen——5five（ve→f）60sixty——16sixteen——6six70seventy——17seventeen——7seven80eighty——18eighteen——8eight90ninety——19nineteen——9nine几十20-90（ty）；十几13-19（teen）怎么读？
185读作onehundredandeighty-five
101读作onehundredandone
646读作sixhundredandforty-six
备注：
百位和十位要用and。
十位和各位要用连字符“—”。

练习题
根据下面的提示填写完整
1.Howmanybooksdoyouhave？
Ihave_____(15)books，______(8)storybooksand_______(7)picturebooks.
2.Howoldareyou？你几岁了？
I’m______(10)yearsold.我十岁了。
3.Thereare______(37)_______(18)boysand_____(19)girls.

下面讲解序数词（th）的规律一二三特殊记，字母结尾tdd；8去t，9去e，ve要用f替。（five-fifth）要是碰到几十几，只变各位就可以。备注：如果是几十（ty），把y变ie再加th比如：twenty-twentieth第1first1st第2second2nd第3third3rd第4fourth4th第5fifth5th(fivefif)第6sixth6th第7seventh7th第8eighth8th第9ninth9th第10tenth10th
第11eleventh11th第12twelfth12th（twelvetwelf）第13thirteenth13th第14fourteenth14th第15fifteenth15th第16sixteenth16th第17seventeenth17th第18eighteenth18th第19nineteenth19th
第20twentieth20th第21twenty-first21st第22twenty-second22nd第23twenty-third23rd第24twenty-fourth24th第25twenty-fifth25th第26twenty-sixth26th第27twenty-seventh27th第28twenty-eighth28th第29twenty-ninth29th第30thirtieth

30th第31thirty-first31st第32thirty-second第33thirty-third第34thirty-fourth第35thirty-fifth第36thirty-sixth第37thirty-seventh第38thirty-eighth第39thirty-ninth
第40fortieth第41forty-first第42forty-second第43forty-third第44forty-fourth第45forty-fifth第46forty-sixth第47forty-seventh第48forty-eighth第49forty-ninth
第50fiftieth第51fifty-first第52fifty-second第53fifty-third第54fifty-fourth第55fifty-fifth第56fifty-sixth第57fifty-seventh第58fifty-eighth第59fifty-ninth
第60sixtieth第61sixty-first第62sixty-second第63sixty-third第64sixty-fourth第65sixty-fifth第66sixty-sixth第67sixty-seventh第68sixty-eighth第69sixty-ninth
第70seventieth第71seventy-first第72seventy-second第73seventy-third第74seventy-fourth第75seventy-fifth第76seventy-sixth第77seventy-seventh第78seventy-eighth第79seventy-ninth

第80eightieth第81eighty-first第82eighty-second第83eighty-third第84eighty-fourth第85eighty-fifth第86eighty-sixth第87eighty-seventh第88eighty-eighth第89eighty-ninth
第90ninetieth第91ninety-first第92ninety-second第93ninety-third第94ninety-fourth第95ninety-fifth第96ninety-sixth第97ninety-seventh第98ninety-eighth第99ninety-ninth
第100onehundredth
特别注意：序数词前面往往加the，表示第几。thefirstone第一个
例句展示
Therearethreehundredandsixty-fivedaysinayear.一年有365天。
Thebikecostmefivehundredandfortyyuan.
Therearesevaysinaweek.一周有七天。
Thisishertwentiethbirthday.这是她的第20个生日。（物主代词出现的时候，the就没有了。）
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