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fect tense briefly. Subject + have/has+ past participle Task 6 Teach the students how to ask and answer questions using the present perfect tense. Task7 Chat time (A3) Millie and Sandy are talking about a film about Hong Kong. Complete their conversation using the correct forms of the verbs in brackets. Step3 Posttask I. 分清一般過去時與現(xiàn)在完成時 I cleaned the blackboard half an hour ago (只說明 “ 擦 ” 和其發(fā)生的時間 ) I have cleaned the blackboard. (說明現(xiàn)在黑板是干凈的) 板書設(shè)計 教學(xué)札記