[predicate] とき[や/も/の/に…]

We’ve learned that when とき is modified by a plain-form predicate it refers to the time that is described by the predicate. Because とき is a noun, it can take any particle that a noun can take.

I think of home when I’m lonely or tired.

I’ve been living in Osaka ever since I was born.

This is a photo of the time Tanaka-san came.