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

1st, 2nd, 3rd, 4th, 21st, 22nd, 33rd...

Why do we spell 1st, 2nd, 3rd, 4th like this?
Where do the letters come from?

Adding -ly

slowly, possibly, uneasily, lovely, gently, beautifully, basically, definitely

In this lesson we're looking at rules such as dropping or keeping the 'e' with ly, when there's a double l + ly, and changing y to i + ly