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Present Perfect. Present Perfect: affirmative. Present Perfect: negative. Present Perfect: interrogative. Past participle : Regular verbs: verb + -ed: worked – played - waited Irregular verbs: 3ª columna: give - gave - given buy - bought - bought.
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Past participle: Regular verbs: verb + -ed: worked – played - waited Irregular verbs: 3ª columna: give - gave - given buy - bought - bought