Used for completed actions before another point in the past (e.g., "She had completed her training").
Remember that verbs like know, belong, imagine, and understand are usually not used in the continuous form (e.g., "had known," not "had been knowing"). 1C & 1D: Reading and Listening Solutions Upper-Intermediate Workbook Key Unit 1
Solutions upper intermediate workbook key unit 1 - Studypool Used for completed actions before another point in
Focus on formal register and set phrases like "as soon as possible" or "I suggest," while avoiding contractions. Solutions Upper-Intermediate Workbook Key Unit 1
Focuses on the duration of an activity leading up to a past event (e.g., "They had been waiting for an hour before the bus arrived").
These sections often cover social topics such as or stories of Survival at Sea .