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。
"If we had had more than one child, we couldn't have sent our son to an international school."
**"If we had had more than one child, we couldn't have sent our son to an international school."**
"If we had had ～, we couldn't have ～." という形がぴったりです。
「2人以上いたら」は "more than one child"、「通わせられなかった」は "couldn't have sent" と表現します。
日本 
アメリカ合衆国 
