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完成的某一動作對現(xiàn)在造成的影響或結果. eg: I have lost my pen. 我把鋼筆弄丟了. ( 過去某時丟的, 現(xiàn)在還沒有找到 ) I have already watched the TV play. 我已經看過這部電視劇了. Have you had your lunch yet ? 你吃過午飯了嗎? Yes, I have just had it. 是的, 我剛吃過. ( 說明現(xiàn)在飽了) 2. 結構: 主語 + have / has + done + … 3. 句型: ⑴ 肯定句: ① 主語 + have / has + done + …eg: She has been to Shanghai. 她去過上海. I have finished doing my homework. 我已經完成我的作業(yè)了. ⑵ 否定句: ① 主語 + have / has + not +done + … eg: I haven’t seen this film. 我沒有看過這部電影. eg: She hasn’t finished doing his homework. 她還沒有完成她的作業(yè). ⑶ 一般疑問句:① Have / Has + 主語 + done + … eg: Have you seen this film ? Yes, I have. / No, I haven’t . 你看過這部電影嗎? 是的, 看過. / 不, 沒有. eg: Has she finished doing his home