I also need to buy a present for Dad's birthday.

　　我還要為你爸爸的生日買一件禮物。

　　You need to think about the reasons for dad's actions.

　　你得想想爸爸這么做的理由嘛。

　　She's been working for Dad for a while.

　　她為我爸爸工作一段時間了。

　　I've saved nearly every penny since I started working for dad.

　　自從我為爸爸工作以來幾乎省下了每一分錢。

　　There's memorial service for Dad today.

　　今天有爸爸的追悼會。

　　That nobody checked the pattern except for dad.

　　可能除了爸爸之外沒人注意到這種相似性。