- For Teachers
I would like to know if "I've been studying all day" and "I've studied" mean the same thing? And tomorrow,could I say : " I had been studying all day" ?
What do you mean by "some reference to another past action" ? I give you an example :
I had been studying all day,that's why i'm still tired.
Like this ?
I had been studying all day when I fell asleep at my desk.
I had been studying all day - that's why I was so tired in the evening.
Your example doesn't work because you related the "I had been ... " action to a present fact, "I'm still tired".
It needs to be related to another past action etc.