一人息子
The only son looks after them.
一人息子が世話します
The only son looks after his parents.
一人息子が両親の世話をします
The only son looks after his parents at the family home.
一人息子が故郷の家で両親の世話をします
The only son looks after his parents at the family home at the weekend.
一人息子が週末に故郷の家で両親の世話をします
The only son looks after his parents at the family home with his wife at the weekend.
一人息子が妻と週末に故郷の家で両親の世話をします