The Present Perfect tenseWinter has already come ,will it still be far in spring ?冬天已经来了,春天还会远吗?present(now)futurepastPresent Perfect Tens现在完成时1.现在完成时表示过去发生或已完成的动作对现在造成的影响;Ihavealreadyhadbreakfast. (我已吃过早餐,我不饿了)2.现在完成时态还表示过去某一时间已经开始并一直持续到现在(包括现在在内)的动作或状态,可以和表示延续的时间状语连用表示持续的动作或状态的动词多是延续性动词。Wehavelivedherefortenyears/since10yearsago.主语 + have/ has + 过去分词(pp)助动词,无意义 现在完成时的结构Winter has already come ,will it still be far in spring ?主语 + have/ has + 过去分词(pp)否定形式 havent ( have not ) + 过去分词 hasnt ( has