Why do the speakers emphasize particular words and phrases

In the following sentence identify the words of the subordinate clause and name its type. we believe that christianity is the key to a better world.

What is the problem with the following sentence: cameron, who has an extreme and unreasonable suspicion of other people and their motives, suffers from paranoia which is a psychological disorder characterized by delusions of persecution or grandeur, was absolutely sure that someone was following him even though he was absolutely alone and hadn't seen a car for miles and miles.

My friends asked me, “are you not coming for the party? "change into passive voice