I get nervous before I go to big parties.I get nervous before_going to_big parties
before是介词,后面用动名词那这个呢？You should talk to Li Ming.Li Ming is friendly to us。（合并成一句）You should talk to Li Ming—— —— friendly to usYou should talk to Li Ming.Li Ming is friendly to us。（合并成一句）You should talk to Li Ming who is—— friendly to us