The document discusses the differences between the past perfect and past perfect continuous tenses in English. The past perfect tense uses "had + past participle" and is used to describe events that occurred before other past events or to emphasize completed actions. The past perfect continuous tense uses "had been + verb + ing" and emphasizes the duration of past activities, describes ongoing past actions that continued into other past times, or shows the cause of past events. Examples are provided for how to use each tense.

1. Pastperfectvspast perfect
continous
Bianca Janette Ruiz Gonzalez

2. Express the past action, already finished when another past
action happened.
E.g: I met them after they
had married each other.
Past perfect
Had + past participle

3. Emphasize the result of an activity in the past
E.g: I had been in London twice by the time I got a job in New
York.
Had + past participle

4. Show two events in the past that are linked.
E.g: I couldn´t take my flight becaus I had forgotten my
boarding pass.
Had + past participle

5. Describe a past action which started in the past and
continued to happen after another action or time in the past
E.g: Mia had been working here for two weeks when she had
an accident
Past perfect
continous
Had been + verb + ing

6. Emphasize the duration of an activity in the past
E.g: Diego needed a new diet because he had
been eating a lot for the past six months.
Had been + verb + ing

7. Show the cause of a past action
E.g: I had been paiting all night, so I was very tired.
Had been + verb + ing