3.我们要知道的语法重点,【现在完成进行时】【 We have just moved into a new house and I have been working hard all morning.】【现在完成进行时用来强调动作在某一段时间内一直进行,而且动作有现在的结果。现在完成时表示漫长地时间段,过去发生的,还一定要对现在产生影响:在过去发生的动作,一直延续到现在,现在完成时动词一定是延续性动词】【It has rained for half day.】【It has been raining.】。