英语语法之完成进行时态思维导图

表示从过去某一时间开始一直延续到现在的动作。这一动作可能刚刚开始，也可能仍在继续，并 可能延续到将来。

主语 + have/has + been + doing + 其它

since + 时间点，for + 时间段等。

I have been sitting here for an hour.我已经在这里坐了一个小时。 The children have been watching TV since six o'clock.从6点起，孩子们一直看电视

表示动作从某一时间开始一直延续到将来某一时间。是否继续下去，要视上下文而定

shall/will have been doing

I shall have been working here in this factory for twenty years by the end of the year.到今年年底，我将在这个工厂工作20年了。

表示从过去某时看至未来某时以前会一直在进行的动作

should/would + have + been +现在分词

He told me that by the end of the year he would have been living there for thirty years.他告诉我，到年底时，他就在那住了30年了