1. PAST PERFECT

2. HOW DOES IT WORK?
In Spanish, the past perfect tense is formed by using the imperfect tense of the auxiliary verb "haber" with the past participle. Haber is conjugated as follows:
había habías había habíamos habíais habían

3. HAD

4. HAD NOT
HADN'T

5. The past perfect tense I had eaten my breakfast
Look at this sentence .
I had eaten my breakfast
before I went to school.

6. How is the past perfect formed?
Had + un verbo en pasado participio y luego un sujeto y un verbo en pasado
Ali had played football before he went back home.

7. Look at this example. After he had taken his music lesson,
he made a telephone call.

8. What had Ali done before he went fishing?
Ali had repaired his car,
before he went fishing.

9. after {had+PP} Past simple
La llave para entender es : después de la palabra after y as soon as vendrá un pasado perfecto
after
as soon as
{had+PP}
Past simple
After she had eaten her food
As soon she had eaten her food

10. {past simple} +PASADO PERFECTO before By the time
La clave es : cuando va la palabra before o by the time , debe seguir un tiempo verbal en pasado
before
{past simple}
+PASADO PERFECTO
By the time
Before I ATE MY FOOD I HAD GONE TO THE SUPERMARKET

11. USOS .
We use the past perfect to talk about an action which happened before another action in the
past

12. After I had finished work ,I watched TV
Make similar sentences using after and before.
Finish work-watch TV
After I had finished work ,I watched TV
Before I watched TV ,I had finished my work.

13. By the time I went to school,I had eaten my breakfast.
Make similar sentences using by the time and as soon as
Eat breakfast-go to school
By the time I went to school,I had eaten my breakfast.
As soon as I had eaten my breakfast,I went to school

14. By the time the police arrived,the thief had escaped.
Make similar sentences using by the time and as soon as
Police arrive-thief escape
By the time the police arrived,the thief had escaped.
As soon as the thief had escaped ,the police arrived.

15. So it is correct to say:
After he had finished the meeting ,he made a telephone call. OR
Before he made a telephone call ,he had finished the meeting.

16. PALABRAS USADAS EN EL PASADO PERFECTO
AS SOON AS
BY THE TIME
AFTER
BEFORE
WHEN