a chip off the old block（相貌或性格）酷似父亲或母亲的人

【例句】
Jane's a chip off the old block. She talks just like her mother.
简完全随了她妈妈，她俩说话的神态一模一样。

Your son is certainly a chip off the old block.
你儿子的确和他父亲一模一样。