on Saturdays
every Saturday
Saturday morning
Saturday night
A: What do you usually do on Saturdays?
A：你通常在周六做什么？
B: I usually go to the library on Saturdays.
B：我通常在周六去图书馆。
1) 每周六
2) 星期六（复数形式）
1. 星期六（复数形式）
noun
1. The days following Friday and preceding Sunday.