Past continuous tense

The past continuous tense is also sometimes called the past progressive.

Here is how to form the past continuous in English.

Structure of past continuous
positive negative question
I / he / she was reading a book.
It was raining.
I / he / she wasn’t reading a book.
It wasn’t raining.
Was I / he / she reading a book?
Was it raining?
You / we / they were reading a book. You / we / they weren’t reading a book. Were you / we / they reading a book?
Past continuous – common mistakes
Common mistakes Correct version Why?
I waiting for him almost two hours. I was waiting for him almost two hours. To form the past continuous we use was/were + verb (-ing).
What did he doing when you saw him? What was he doing when you saw him? To form the past continuous we use was/were + verb (-ing).
We were playing tennis every morning. We played tennis every morning. We mostly use the past simple tense (we played) for repeated actions in the past.
They watched TV when I came. They were watching TV when I came. We use the past continuous when we want to say what was happening (what was in progress) at a particular time in the past.