on

لِـ \ at: (showing cause): I was pleased at the news. for: in regard to: He has a liking for fruit. For a boy, he’s rather weak. He’s too young for such work, that is intended to belong to, be given to, or used for the purpose of This parcel isn’t for you, it’s for your sister. What’s this money for? It’s for buying some food for dinner. They go fishing for pleasure. on: showing the state of sth.: The goods are on sale. per: for each: It costs 36 pence per pound. to: also so as to, in order to showing purpose: He did that (so as) to annoy me.