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Tom is looking for his key. He can't find it. -- He has lost his key. (PP) (He doesn't have his key now.) 10 mins later: Now Tom has found his key. He has it now. -- Has he lost his key ? (PP) -- No, he hasn't. He has found it. --Did he lose his key? (Past Simple) -- Yes, he did. He lost his key (Past Simple), but now he has found it. (PP) |
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