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If you've been linked to this, you probably made a language mistake and whoever sent this to you cared enough to point it out. The best thing to do is read the details and see where you went wrong.
Past participles go after "have" as in "I have done something". In many cases they are the same as the simple past: "I looked" and "I have looked", "I found" and "I have found". But sometimes they're not. Here are some that are commonly misused.
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