1) "Even in those days he played golf every wednesday.".., in this sentence there are two adverbial markers(in those days and every wednesday) so which marker is considered as reference time and situation time? And why?
I would say that even in those days is a temporal location adjunct and every Wednesday is a frequency adjunct. In the former, those days is being used anaphorically, i.e. it refers to some contextually given period in past time, while the latter quantifies the situation by marking it as a multiple situation, in this case every Wednesday.