When do you use past perfect tense?
describe an action is happening now
describe something happened before another in the past
describe an action had done in the past
something didn't happened yet but will happen
I _____ that house for eight years before the fire.
had had
had
had have
have
He _____ not left yet.
has
had
have
haven't
You are too late, the train _____.
has left
had been leave
is left
had left
Linda says that she _____ to that swimming before.
have gone
was going to
have been
had been
I _____ already _____ asleep before 11 pm.
had / fallen
have / fallen
had / fell
have / fall
I had already _____, so I didn't feel hungry at all.
ate
eaten
been eating
eat
George _____ finished his homework yet.
was
will be
had not
has just
What is the form for past perfect tense?
Have+being+past participle
Have +been+simple past verb
Had+continuous verb
Had + past participle
I lost so much weigh because I _____ exercising.
have begun
am doing
have been
had begun