act his age的用法和样例：
- That old man looks foolish wearing a tracksuit and hanging out in Hsimenting. He should act his age.
- If he had acted his age, he wouldn't have gotten hurt.
- I don't think he looks his age of seventy.
- He has always assorted with men of his age.
- He lied about his age to join the army.
- He looks young considering his age.