Past Perfect form
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             Grammar 
            Past Perfect diagram Past Perfect form Past Perfect use Past Perfect signal words  | 
          Exercises Past Perfect | 
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Past Perfect Tense is built with had in all persons and past participle. 
 
  Past participle = the third form of irregular verbs, or the infinitve of a verb + -d, -ed.
| Affirmative | Contractions | |
|---|---|---|
| I / You / He / She / It / We / They | I / You / He / She / It / We / They had written a letter. | I / You / He / She / It / We / They'd written a letter. | 
| Negative | contractions | |
|---|---|---|
| I / You / He / She / It / We / They | I / You / He / She / It / We / They had not written a letter. | I / You / He / She / It / We / They hadn't written a letter. | 
| Questions | |
| I / You / He / She / It / We / They | Had I / You / He / She / It / We / They written a letter? |