Right: Had she learnt to read before she started school?, I hadn't heard of Zac Efron before I met him., When the film started, we had fallen asleep., Wrong: My friends had left by the time I had got there., After we had finished our dinner, we went for a walk in the park., He had already gone to bed when I had phoned him., I had opened the presents after all the guests left., I already finished my project when my computer had crashed.,

Past perfect

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