Answer:
the theme is the overall message that the story gives.
the authors purpose is why the author wrote the story for example the author might have wanted to persuade, inform or entertain.
Explanation:
they are definitely different!!!!!
The use of speech to exchange of informal ideas, information etc.
- dictionary
Both Derek and I will go to the dance etc...
Remove the other character and try to write the sentence as if it was just yourself doing the action: "Myself will go" or "Me will go" don't sound right, but "I will go" is correct.