Question

What is a question you can ask yourself while reading to help you understand tone

Answer 1

What is the author trying to tell me?
What kind of punctuation do they use?
What is happening in the book or story? 
What is the goal of the book or story? 

f you see ! or ? you then know what the character is doing exp: I can't believe that! (They sound surprised, now if you do: I can't believe that? they sound confused 

Does that help?