Level A2
Past Continuous
Was or were plus -ing shows an action going on in the past: I was reading, they were playing. I, he, she and it take was; you, we and they take were. Often it is the middle of an action when something else happens.
I was reading when you called.
Look: I was reading when you called. Reading was going on, and then the phone rang.
Forms
I was reading.— now am, in the past wasThey were playing.— you, we and they take wereI was reading when you called.— the middle of an action, when something else happens
A common mistake
Wrong: I reading a book when you called.
Right: I was reading a book when you called.
Many people say I reading a book when you called, but the -ing form needs was or were in front. We say: I was reading a book when you called.
More examples
She was cooking dinner at six o'clock.
At a time in the past, the action was going on: She was cooking dinner at six o'clock.
We were watching TV when the lights went out.
We and they take were: We were watching TV when the lights went out.