He has been watching TV for an hour.
He has already watched TV.
He is watching TV now.
He watched TV yesterday.
He was watching TV all morning.
He had watched TV by six o`clock.
He had been watched TV for a long time.
He will watch TV tomorrow.
He will be watching TV this time next week.
He will have watched TV by 8 o`clock.
He will have been watching TV for a long time.