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E tenses (present (perfect simple (about past and present (aircraft has…

- - - - aircraft has landed
      - its on the ground now
      - action in the past is finished
  - - - we have been waiting here
      - action happens over a period of time
      - period in the past lasts up to present
        
        action still happening
- - - - had been doing
        
        had + been _ ing
      - things that had happened before the situation in the past for a period of time
        
        we had been playing tennis for 30 minutes when it started raining
        
        the situation is in the past generally
    - - he had enjoyed the party
      - the party was before yestarday
        
        and I tell u about yesterday