THE PAST PROGRESSIVE 1. Form: Possitive Negative Question S + was / were + V-ing . S + was/ were + not + V-ing Was/ Were + S+ V-ing. . .? : She was watching TV at last night. What were you doing when I called yesterday? 2. Usage: - Diễn tả 1 sự việc đã xảy ra tại một thời điểm nhất định ở quá : She was watching TV last night