Possible Duplicate: How do the tenses in English correspond temporally to one another? When do I use present perfect tense instead of the simple past? When will “Present Perfect vs. Past ...
Possible Duplicate: Present perfect for past action with present effect Is this sentence correct? What exactly does it mean? Person 1: Where did you hide my keys? Person 2: I put ...
A student has written: Still, I have already been aware of most of the information even before watching the video. It doesn't feel right and I would normally use a past simple here. I'm on my ...
Could you explain to me please what is the difference between these. It is meant to express that I will let him know AFTER I picked/have picked a car. I'll let you know which one I picked ...
To me, using Present Perfect form means the event can occur again. So, saying someone has died may not be grammatically correct. Also, I noticed (it might be just co-incidence): passed ...
Normally we use the past simple instead of present perfect when an action happened at a specific time in the past and is not linked with the present. Why is the below sentence grammatically correct? ...