序数词Michelle.ppt

序数词ordinal number
授课老师：张白美
Michelle
Let's enjoy a piece of music and review numbers together
Ten little Indians
entieth 20th
…
thirty thirtieth 30th
five fifth 5th
eight eighth 8th
nine ninth 9th
one first 1st
two second 2nd
three third 3rd
基数词和序数词对照，你能看出什么规律吗？
一、二、三，特殊记,
词尾字t,d,d；
th要从四加起；
六、七同四守规律;
八少t,九去e；
f来把ve替,ty变成tie;
若是遇到几十几，
只变个位就可以。
基数词变序数词的规律是：
Write the right form of the .
1. twelve(序数词)________________ 2. thirteen(序数词)__________________
3. ninth(基数词)_________________ 4. eighteenth(基数词)________________
5. second(基数词)_______________ 6. three(序数词)____________________
7. fifth(基数词)_________________ 8. one(序数词)______________________
9. nineteen(序数词)______________10. twenty-four(序数词)______________
11. thirty(序数词)_________________ 12. forty-second(基数词)_______________
13. fiftieth(基数词)________________ 14. thirty-one(序数词)__________________
15. twenty(序数词)________________ 16. twenty-three(序数词)_______________
Check answers.
1. twelve(序数词) ( twelfth ) 2. thirteen(序数词) ( thirteenth )
3. ninth(基数词) (nine ) 4. eighteenth(基数词) (eighteen )
5. second(基数词) (two ) 6. three(序数词) ( third )
7. fifth(基数词) ( five ) 8. one(序数词) ( first )
9. nineteen(序数词)( nineteenth ) 10. twenty-four(序数词)( twenty-fourth )
11. thirty(序数词)( thirtieth ) 12. forty-second(基数词)( forty-two )
13. fiftieth(基数词)( fifty ) 14. thirty-one(序数词)( thirty-first )
15. twenty(序数词)( twentieth ) 16. twenty-three(序数词)( twenty-third )
4. 百、千、万的序数词由hundred、thousand、million等加-th，前面加相关的基数词构成。
one hundredth
two thousandth
three millionth
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