He sees watermelon among the food that's supposedly for the dogs, and he figures out it's for a human
never
tom wants Jim to water his plant with his tears
It's a corruption of the form of address, Master Tom.
Tom
Tom wanted Jim to write the inscription on his coat of arms.
Tom Ashenbrenner in "The Jim Thorpe Story" was one of his coaches early on. Jim Thorpe was an Olympic medalist.
Tom wanted Jim to write an inscription on the brass dog collar they were making for Jim's dog.
Tom offered to help Jim with his work during the night if Jim would trade jobs with him.
Tom Sawyer initially believed that Jim was a slave and saw him as such. However, after spending more time with Jim on their adventures, Tom came to see him as a caring and trustworthy friend, not just a slave.
If you are wondering what Jim and Tom voiced together on the same Nickelodeon show; it was CatDog. Jim Cummings voiced Cat while Tom Kenny voiced Dog.
Tom wanted to surprise Jim with his freedom and enjoy the reaction. He also wanted to create a dramatic moment by revealing the news in his own way. Additionally, Tom may have been unsure how Jim would react initially and wanted to be cautious.
The innocent figures, or the "mockingbirds" are Tom Robinson and Boo Radley.