[had + past participle] Examples: You had studied English before you moved to New York. Had you studied English before you moved to New York? You had not studied English before you moved to New York. Complete List of Past Perfect Forms USE 1 Completed Action Before Something in the Past The Past Perfect expresses the idea that something occurred before another action in the past. I had never seen such a beautiful beach before I went to Kauai. USE 2 Duration Before Something in the Past (Non-Continuous Verbs) With Non-Continuous Verbs and some non-continuous uses of Mixed Verbs, we use the Past Perfect to show that something started in the past and continued up until another action in the past. We had had that car for ten years before it broke down. Although the above use of Past Perfect is normally limited to Non-Continuous Verbs and non-continuous uses of Mixed Verbs, the words "live," "work," "teach," and "study" are sometimes used in this way even though they are NOT Non-Continuous Verbs.
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