One-first
two-second
three-third
four-fourth
five-fifth
six-sixth
seven-seventh
eight-eighth
nine-ninth
ten-tenth
eleven-eleventh
twelve-twelfth
2) April is the fourth month
June - sixth
February- second
November- eleventh
August- eighth
May- fifth
October- tenth
January- first
March- third
July-seventh
September-ninth
Вот и все, но лучше выучи эти числа :-)