Answer:
When using 'Je' in french, whenever it's places next to a word that starts with a vowel, you conjugate/make smaller. And that's when just 'J' is used.
For example:
This is correct.. J'aime aider.
Though this is incorrect...Je aime aider
Summary:
You use the just the letter 'j' in french, when the next word over starts with a vowel.
( a, e, i, o, u, y )
