25. Imperfect vs. past perfect

Differences

→ Short, completed action.

→ Description, habit, context.

• The weather was nice (imperfect tense) and I opened the window (past perfect tense).

• I was walking (imperfect tense) when I saw (past perfect tense) my friend.

Yesterday, it was raining (imperfect). I took an umbrella (past tense) and I went out (past perfect).

Choose the correct form:

_________ (The weather was / It was) nice when I started working.

When I _________ (was walking / walked) in the street, I _________ (saw / saw) an accident.