eaving at six the next morning.他说火车将于第二天早晨六点离开。She told me she was coming to see me.她告诉我她要来看我。现在完成时1. 概念:过去发生或已经完成的动作对现在造成的影响或结果,或从过去已经开始,持续到现在并且有可能继续下去的动作或状态。2. 时间状语:recently, lately, since, for, in the past few years, etc.3. 基本结构:have/has + done否定形式:have/has + not +done.一般疑问句:have或has。4. since的三种用法1) since +过去一个时间点(如具体的年、月、日期、钟点、1980, last month, half past six)。例如:I have been here since 1989. 1989起,我一直在这儿。2) since +一段时间+ ago。例如:I have been here since five months ago. 我在这儿,已经有五个月了。3) since +从句(一般过去时)。例如:Great changes have taken place since you left. 你走后,变化可大了。比较since和forsince 用来说明动作起始时间,for用来说明动作延续时间长度。例如:I have lived here for more than twenty years.我住在这儿二十多年了。注意:并非有for 作为时间状语的句子都用现在完成时。I worked here for more than twenty years. (我现在已不在这里工作。)过去完成时1. 概念:以过去某个时间为标准,在此以前发生的动作或行为,或在过去某动作之前完成的行