一到初中的语法题,I ‘ve been sitting in front of the computer for an hour.

题目

一到初中的语法题,I ‘ve been sitting in front of the computer for an hour.
I ‘ve been sitting能不能改成I have sit

答案

首先应该是 I have sat 然后修改要根据语境和语法(sit 的过去时和完成时是sat)其次现在完成进行时一般是用在这个动作从过去开始做,现在仍然在继续（have been doing)而现在完成时则是从过去做到现在,已经做完了,对现...