Ne laisse pas ton travail à moitié fait.
Don't leave your work half done.
La moitié des bananes du panier étaient pourries.
Half of the bananas in the basket were rotten.
Il possède moitié moins de livres que moi.
He has half as many books as I.
FrenchTextbook teaches rules like this, in a full beginner course.
162 lessons, 4,000+ exercises, and 6+ hours of audio.