I have a son who goes to international school. If I had had two sons, I could not have afforded it.
仮定法を使って表現しました。現状を説明し、そのあとに仮定法で表しました。
I have a son who goes to international school. If I had had two sons, I could not have afforded it.
インターに通う息子が一人います。
もし息子が二人だったら、経済的に無理だっただろう。