His father has been away from his hometown for five years.
It is/has been five years since his father left his hometown.
His father left his hometown five years ago.
均为正确表达.其中第一句是楼主所要求的那种.
His father has been away from his hometown for five years.
It is/has been five years since his father left his hometown.
His father left his hometown five years ago.
均为正确表达.其中第一句是楼主所要求的那种.