GRAMMAR 2 PAST PERFECT

Past perfect 

The past perfect in English is a verb tense used to express an action that occurred before another past action. For example: When I arrived at the party, Emma had left. / When I got to the party, Emma was gone.

had + past participio  

It is a compound verb tense that is formed with the auxiliary had+ past participle.

The auxiliary had is the same for all pronouns.

Affirmative structure

Subject + auxiliary had + past verb + complement.

I

had

met

them before the meeting

Negative structure

Subject + auxiliary had + not + past verb + complement.

I

had

not

said

how long will the video call is

Interrogative structure

Auxiliary had + subject + past verb + complement?

Had

I

gone

to eat before lunch time?

When Llanos arrived Fabian had begun the class.