When Prospero is talking to Ariel, he uses formal language and orders Ariel about as if he is superior to him. Their relationship is that of servant and master. In line 195, Prospero says “I bade thee”. This shows that Prospero commands Ariel to do as he says. Prospero also praises Ariel because he must respect his magical abilities to some extent. I know this because in line 207, Prospero says “my brave spirit”.

Ariel mentions wanting his freedom back by saying “Is there more toil?” on line 241 but Prospero chooses to ignore this and accuses him of being ungrateful. This is because on line 250, he says “Dost thou forget from what a torment I did free thee?” He then tells Ariel that he will imprison him back in the oak tree if he doesn't obey him. This shows that he has had enough of Ariel moaning and disobeying him.

After this outburst, Prospero speaks more kindly to Ariel and he tells him that if he does everything that he asks of him, he will set him free in two days. I know this because Prospero says on line 297 “Do so, and after two days, I will discharge thee.” Prospero desperately needs Ariel's magic powers for a little while longer.

Miranda

Unlike Ariel, Prospero uses kind and gentle language when speaking to Miranda, such as “Awake dear heart awake” on line 305. This makes it clear that Prospero loves his daughter dearly. The reader can clearly tell that his attitude changes considerably when he speaks to Miranda. For example, he is not as harsh as he is when he speaks to Ariel. Towards the end of the scene, Miranda complains that she feels tired but Prospero tells her to “shake it off” because they are going to visit Caliban.

This is ambiguity because it could mean that Prospero is telling her to shake off her tiredness or it could mean that he is telling her to forget about the story he had earlier told her. Overall, we see that Prospero is very protective of his daughter.

Caliban

Caliban is another servant to Prospero but he is more like a slave. Prospero thinks that Caliban is useless because on line 285, he calls him a “dull thing”. This shows that in his opinion, Caliban is useless and he can't do anything. Prospero also thinks that Caliban's mother, Sycorax, is just as bad as Caliban. This is because he calls Sycorax a “damned witch” and a “blue eyed hag” on lines 263 and 269. Adding to this, Prospero refers to how ugly Caliban is by saying he is “not honored with human shape.”

Prospero considers Caliban to be useless and worthless, even though he collects the wood for him. When Caliban first enters in the scene, Prospero shouts “slave!” at him and commands him to “speak”. He then orders Caliban to hurry up and insults him by calling him a “tortoise.” Overall, Prospero only really cares about Miranda and he takes advantage of Ariel and Caliban. Shakespeare shows this with the wide range of vocabulary used.