How to exploit a standard TAG

he probably 'knows' about standard lines and expects them from you
as an example, if you're HU to the flop on A84tt or Q74tt then you don't have to auto-raise your set cos there aren't many flush draws in his range and he'll barrel 3/4 of turns etc

edit to address question below. tt=two tone=the cards on the board are from two suits only.
e.g. 7s6sAc is a tt board/flop, AcKcQdJd is a tt board