I’ve learned to use present perfect continuous for an action that began in past and is still continuing and past perfect continuous for an action that began in past and ended in past too before something else happened. So my question is that how precise one would have to be if he were to use it in sentences:
- I’ve been waiting to drive the car since morning, I’m glad I’m driving it now
- I’ve not been watching since morning, I’ve just switched it on
- I had not been studying since morning, got back on it an hour ago/few minutes back.”
So the usage is correct here.?