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红岩中学常微静回顾以下要点：1.现在完成时态构成2.现在完成时态句式3现在完成时态常用的时间状语4.现在完成时态用法回顾一：现在完成时是怎样构成的？•助动词have/has+过去分词规则动词和不规则动词规则动词和不规则动词规则动词和不规则动词动词过去分词：•1.规则动词：过去分词构成与过去式相同•2.不规则动词：AAA型：cut-cut-cutABB型：leave-left-leftABA型:come-came-comeABC型:take-took-takenAAB型:beat-beat-beaten回顾二：请写出现在完成时的句式•1.肯定句式：主语+have/has+过去分词...•2.否定句式：主语+haven't/hasn't+过去分词...•3.一般疑问句：Have/has+主语+过去分词...?回顾三：请总结出现在完成时常用的时间状语•just,already,yet,ever,never,before,sofar回顾四：现在完成时的用法•1.表示过去发生或已经完成的动作对现在造成的影响。和already，never,ever,just,before,yet等状语连用。Ihavejusthadmybreakfast.pastnowfuture•2.过去已经开始，持续到现在的动作或状态,有可能还会持续到将来。常与for或since引起的一段时间状语连用。•Ihavelivedhereforthreeyears.•Ihavelivedheresince2004/threeyearsagopastnowfuture学以致用一：填空1.Thetwins（wash）theclothesforanhour.2.He(play)basketballsincethreeyearsago.havewashedhasplayed学以致用二：变否定句1.Hehasalreadycoughtacold.Hehasn'tcoughtacoldyet.2.Hehasgonetothehospital.Hehasn'tgonetothehospital.学以致用三：变一般疑问句1.Hehasalreadycoughtacold.Hehascoughtacoldyet?2.Hehasgonetothehaspital.Hashegonetothehaspital?since和for的用法•since+时间点•for+时间段例：WehavelivedinBeijingsince2000.IhavebeeninBeijingfor10years.have/hasbeen和have/hasgone的区别•have/hasbeen表示“曾经到过某地”•have/hasgone表示“已经去某地了”•Shehasbeentoshanghai.•Shehasgonetoshanghai.