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They both sat quietly for a moment, thinking back again.
We explained our situation and asked them to think back a ways.
"I was just thinking back on when we were boys."
Think back a year ago to the last time you went.
Even now, thinking back on it, I couldn't tell you which role he played.
Can we even identify all of them later, thinking back?
Whatever she'd been thinking back then, she couldn't understand it now.
Today I like thinking back on that conversation with my father.
He was silent then, thinking back on what had been.
Now I want you to think back for a time before that evening.
Phrasal Verbs
