Willy Loman is a salesmen who's about to loose his job. His life is going down the toilet, he can't pay his bills and is completly disrespected by his dead beat kids Biff and Happy. Throught out the story he reflects on his life and his mistakes and ways he could make things up to his family.
Betrayal is a major theme in Death of a Salesman, Willy enters into an affair and completely betrays his wife Linda and sons. But ironically Willys biggest fear is being betrayed. He thinks Biff is vindictive, failing at his buisness to reject his father's dream, and his failure to keep a job is all related to the affair and Willy's betrayal of his family.
The tone is caring and genuine when diricted at Willy's problems, but often times can be satirical.
The diction and syntax are what make the play more realistic, flashbacks also make the characters more relateable.