what is a woman not supposed to do if she wants to visit an English pub
什么事情是一个想去参观英式酒吧的女士不该做的?
what is sb supposed to do 某人该做什么
what is sb not supposed to do 某人不该做什么
后面是if引导的条件状语从句：if sb want to do 如果某人想做某事