The document discusses ordinal numbers, which indicate the position or order of things or people. Most ordinals are formed by adding "th" to the number, such as 4th and 10th. The exceptions are 1st, 2nd, 3rd, and numbers ending in 11th-13th, which do not add "th".

1. Ordinals

2. We use ordinal numbers to talk about the "order" of
things or persons.

3. We use ordinal numbers to talk about the "order" of
things or persons.
Most ordinals are created by putting ‘th’ behind the
number.

4. We use ordinal numbers to talk about the "order" of
things or persons.
Most ordinals are created by putting ‘th’ behind the
number.
fourth
4th
tenth
10th
eighteenth
18th
twenty-sixth
26th

5. Exceptions:

6. Exceptions:
first
1st

7. Exceptions:
second
2nd
first
1st

8. Exceptions:
second
2nd
first
1st
third
3rd

9. Exceptions:
second
2nd
first
1st
fifth
5th
third
3rd

10. Exceptions:
second
2nd
first
1st
fifth
5th
eighth
8th
third
3rd

11. Exceptions:
second
2nd
first
1st
fifth
5th
eighth
8th
ninth
9th
third
3rd

12. Exceptions:
second
2nd
first
1st
fifth
5th
eighth
8th
ninth
9th
third
3rd
twelfth
12th

13. Exceptions:
second
2nd
first
1st
fifth
5th
eighth
8th
ninth
9th
third
3rd
twelfth
12th
twentieth
20th

14. first  1st
second  2nd
third  3rd
fourth  4th
fifth  5th
sixth  6th
seventh  7th
eighth  8th
ninth  9th
tenth  10th

15. first  1st
second  2nd
third  3rd
fourth  4th
fifth  5th
sixth  6th
seventh  7th
eighth  8th
ninth  9th
tenth  10th
eleventh  11th
twelfth  12th
thirteenth  13th
fourteenth  14th
fifteenth  15th
sixteenth  16th
seventeenth  17th
eighteenth  18th
nineteenth  19th
twentieth  20th

16. first  1st
second  2nd
third  3rd
fourth  4th
fifth  5th
sixth  6th
seventh  7th
eighth  8th
ninth  9th
tenth  10th
eleventh  11th
twenty-first  21st
twelfth  12th
etc.
thirteenth  13th
fourteenth  14th
fifteenth  15th
sixteenth  16th
seventeenth  17th
eighteenth  18th
nineteenth  19th
twentieth  20th

17. http://bit.ly/englishgrmmr/
http://www.youtube.com/user/EnglishGrmmr
https://twitter.com/englishgrmmr
https://www.facebook.com/english.grmmr.5