内孫
My son's son comes to visit.
息子の息子が訪ねてきます
My son's son comes to visit his grandfather.
息子の息子が祖父を訪ねてきます
My son's son comes to visit his grandfather in the hospital room.
息子の息子が病室で祖父を訪ねてきます
My son's son comes to visit his grandfather in the hospital room after school.
息子の息子が放課後に病室で祖父を訪ねてきます
My son's son comes to visit his grandfather in the hospital room after school with his father.
息子の息子が父と放課後に病室で祖父を訪ねてきます