≒ Ten years have passed since he died.
≒ He has been dead for ten years.
≒ He died ten years ago.
彼が死んで10年になる。
It is ten years since he died.
≒ Ten years have passed since he died.
≒ He has been dead for ten years.
≒ He died ten years ago.
≒ Ten years have passed since he died.
≒ He has been dead for ten years.
≒ He died ten years ago.
