The following is a ppt I made last week to teach the past perfect tense in the sentence "S had V-en...since S V-ed." Those who still have problems with the pattern can review and think about why the past perfect tense is used in every example sentence. A review of the present perfect in the similar sentence pattern, as shown in the first slide, can help you have a better grasp of the new pattern.
past perfect
Any teacher who wants to use this ppt in class, just feel free to download it. Most of the example sentences are from"Pattern in Use" in Sanmin Textbook: Book 3, Unit 1 (p. 13).
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