1st, 2nd, 3rd, 4th.

(1) First first--1st.

first

English [f?:st] ? American [f?:rst] ?

n. First, initially; first class; number one, [Music] High part.

adv. First time; earliest, first; prefer; priority.

(2) Second second--2nd.

second

English [?sek?nd] ? American [?sek?nd] ?

n. second; instant; inferior goods; second copy food.

adj. Secondary; secondary; second; additional.

adv. Second; secondly; in the second place.

(3) Third third--3rd.

third

English [θ?:d] ? American [θ?:rd] ?

n. Third; one-third; third files.

adj. The third; one-third.

(4) fourth fourth-- 4th.

fourth

English [f?:θ] ? American [f?:rθ] ?

n. Fourth; the fourth day of the month; four One-quarter; the fourth level

adj. The fourth; the fourth. num.Fourth.

Extended information:

Ordinal numbers from one to thirtieth in English:

1st first; 2nd second; 3rd third; 4th fourth; 5th fifth

6th sixth; 7th seventh; 8th eighth; 9th ninth; 10th tenth

11th eleventh; 12th twelfth; 13th thirteenth; 14th fourthteenth; 15th fifteenth

16th sixteenth; 17th seventeenth; 18th eighteenth; 19th nineteenth; 20th twentieth

21st twenty-first; 22nd twenty-second; No. 23 twenty-third; No. 24 twenty-fourth; No. 25 twenty-fifth

No. 26 twenty-sixth; No. 27 twenty-seventh; No. 28 twenty-eighth; No. 29 twenty-ninth; No. 30 thirtieth