ask sb for sth 向某人要求某物
当你迷路时，你可以向警察需求帮助。
When you get lost, you can ask the police for help.
一些学生经常向父母要钱去玩电子游戏。(video games)
Some students often ask their parents for money to play video games.
他向父母要一辆自行车作为生日礼物。
He asked his parents for a bicycle as his birthday present.
