Past Perfect Simple

Dear all my beloved readers!
Mr.ET Sopheak
Tel: 012289363 / 0976469625

Past Perfect Simple

Positive sentence: Subjective+ had+ Perfect Verb+ Complement.

Negative Sentence: Subjective+had+ not+Perfect Verb+ Complement.

Question: Had + subjective+Perfect Verb + Complement?
The Past Perfect Tense is used:
- To describe an action finished before another past action

       Ex: Richard had gone out when his wife arrived in the office.

-  To describe an action that happened before a specific time in the past.

Ex: Christine had never been to an opera before last night.

-  To describe cause and effect (combine with Past Simple)

Ex: I got stuck in traffic because there had been an accident.

-  To emphasize the result of an activity in the past

Ex: I had been to London twice by the time I got a job in New York.

- Time Expressions Used with the Past Perfect Tense

Already;   Yet;   For;   Since;   Just;   After;   Before;   Until;   The moment that;  …

Thanks,