This document discusses the past perfect and past perfect continuous tenses. The past perfect tense is used to talk about an action that took place before some point in the past, such as "the train had left when we reached the station." The past perfect continuous tense describes an action that continued for some time before the past, like "it had been raining for 2 days when we reached Lahore." Both tenses express actions that were completed before another past event.

1. PAST PERFECT & PAST
PERFECT CONTINUOUS

2. Past Perfect
It is used to talk about an action which took place before
the past.
For example;
The train had left when we reached at the station.
When we reached the station, the train had left.

4. Past Perfect Continuous
It is used to talk about an action which continued for
sometime before the past.
For example;
It had been raining for 2 days when we reached Lahore.
When we reached Lahore, it had been raining for 2 days.