Does enjoy and enjoys. I can't understand in what cases i should use "does enjoy" and why i should use it all. I've never seen this conctruction and used to think that in present simple with "he, she, it" its need to add only "s" in the end of the verb. But there are some exersises in the textbook and the answers say: "Paul does enjoy surprises, just not on his birthday!" and "I do wish you'd be quiet". Why so? Thanks~