where, when, and in which 的用法请教

Apolloemma

The pronoun where can be used to modify a noun place, such as area, site, country or Nevada. Where can not modify a "metaphorical" place, such as condition, situation, case, circumstances, or arrangement . In these cases, use "In which" than where.

   WRONG: We had an arrangement WHERE he cooked and I cleaned.
   RIGHT:   We had a arrangement IN WHICH he cooked and I cleaned.

The pronoun when can be used to modify a noun event or time, such as period, age, 1987, or decade. In these circumstances, you can also use "In Which" instread of When.

我是不是可以理解Manhattan这段话的意思是， in which 可以用在具体的实际的时间状语上，地点状语的表达上，但是在抽象的时间状语，和地点状语的表达上，却只能用 IN WHICH.

那么，下面这句话：

            There are times where students should pay all their attention on studying.

句子里面用的where 是不是用错了呢？