五年级英语序数词1-30的读法（1-20序数词英语发音规律）

First

Second

Third

 Fourth

Fifth 

Sixth

Seventh

Eighth

 Ninth

Tenth

Eleventh

Twelfth

 Thirteenth

Fourteenth

 Fifteenth

Sixteenth

Seventeenth

Eighteenth

Nineteenth

Twentieth

 Twenty-first

Twenty-second

 Twenty-third

 Twenty-fourth

 Twenty-fifth 

Twenty-sixth

Twenty-seventh

 Twenty-eighth

Twenty-ninth

Thirtieth