often as a child
彼は子供のころ、よくここに来たかもしれない。
He may have often come here when he was a child.
私は子供のころ、よく釣りにいっていた。
When I was a child, I often went fishing.
トムさんのお家はトムさんの子供のころ、よく引っ越しました。
Tom’s family moved often when he was a child.