I have been trying to get my new room in order 为什么是现在完成进行时?

have been + ing 是“现在完成进行式”,它表示“一直”“始终”的意思.使用时我们最好注意一下与之相伴的某些词或时间状语.
例如：
• How long have you been writing letters?
你（一直在）写信写了有多长时间啦?
• I've been writing letters for an hour (since three o'clock).
我写了有1个小时了.（从3点钟起就一直在写信.）
2.这种“一直”就是至今仍然在继续的意思.如果我们说：
• He has been helping her with her homework for months.
( 几个月来他一直在帮助她做家庭作业.)
这句话的内涵是：
•He started to help her with her homework months ago,and he still does.
(几个月之前他开始帮助她做作业,他现在仍然在帮她.)
I have been trying to get my new room in order .我一直在想办法把我的新房间收拾整齐.
再问： 它与现在完成时的区别是什么啊？ 谢谢