【明報專訊】A chip from a block of wood is a small piece of it. Chips from the same block will always resemble the source in colour and texture. That's why we say of a person whose personality or appearance resembles his or her parents that he or she is a chip off the old block. "I understand that Ambrose is studying medicine and intends to join his father's practice when he graduates. He's certainly a chip off the old block, isn't he?"