I've been trying to learn how to play basketball since last year.第三个单词为什么用ing的形式

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I've been trying to learn how to play basketball since last year.第三个单词为什么用ing的形式
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I've been trying to learn how to play basketball since last year.第三个单词为什么用ing的形式
I've been trying to learn how to play basketball since last year.第三个单词为什么用ing的形式

I've been trying to learn how to play basketball since last year.第三个单词为什么用ing的形式
现在完成进行时 这个事情从过去一直做到现在,以后还会这样做

have been doing 现在完成进行时

have been doing 现在完成进行时

过去将来进行时的时态,意思是去年我正在学习怎样打篮球

have been doing为现在完成进行时。
再如:I've been working since eight o'clock.
He has been sleeping for three hours.

现在完成进行时 亲!我从去年开始一直尝试学者如何打篮球

表示持续在做的事。自从去年开始我一直努力学习打棒球。

现在完成进行时 表示从过去某时开始一直持续到现在的动作,并且还将持续下去。
其他的还能用什么表示主动的?

have been trying这是现在完成进行时态,构成have/has been doing sth.