Dear classmates ,
Past perfect is used when there are two past events.
The past perfect event happened first in time.
-EXAMPLE-
FIRST: The thief spent the money.
THEN: The police caught the thief.
The thief had spent the money before the police caught him.
OR: Before the police caught the thief, he had spent the money.
“had spent” tells us that event happened first in time.
Past perfect key words: already, yet.
By englishzone.com
Dania Castillo.
Online grammar workshop 