Past perfect
Use
Form
Key words
Examples
For talking about something that happened before something else.
Negative form: subject + had + not + past participle
I washed the floor when the painter had gone.
Always
Interrogative form: had + subject + past participle
Positive form: subject + had + past participle
Had they studied hard for exams?
After she had moved out, I found her notes.
My friends hadn't ever gone to France.
Had she not done a good job?
Sometimes
Often
Rarely
Usually
On Sundays
Every day