- Open your reader on page 91, there you will see the Past Simple.
- The standard rule is: Stam + (e)d, but there are exceptions of course as seen on the bottom of page 91.
Some examples: Treat -> Treated, I want -> I wanted
"I will treat myself to a glass of wine." -> "I treated myself to a glass of wine."
"I want to go out for dinner." -> "I wanted to go out for dinner."