The document discusses forming past tense verbs in English. It notes that to make a regular verb past tense, typically "ed" is added to the base verb form. For verbs ending in "e", just "d" is added after removing the final "e". Some example conversions are provided such as "talk" becoming "talked" in past tense and "smile" becoming "smiled". Common irregular past tense verbs like "run" and "give" are also briefly mentioned.