表示对现在有影响的某一已发生的动作. e.g. The delegation has left 代表团已经走了 Look, what you have done. 看你干的事. 与这一时态连用的时间状语有: already, yet, just, ever, never, by now, so far, recently, by the end of this month, since, for 短语.连词 since 引导的时间状语从句. 一般过去时与现在完成时的区别: 一般过去时:重在说明动作在过去发生时的具体情况(时间.地点.方式.对象.细节等). 现在完成时:只提起已发生的动作及其影响.不说明动作发生时的具体情况. cf. Have you had your lunch? What did you have for lunch? I have ever been to the Great Wall, and I went there last summer with my father. 注:现在完成时表达的动作常具有反复性.故下面一句是错的: Have you seen the six thirty's news program? 应改为: Did you see the six thirty's news program? 【查看更多】
