1. If I were you, I would study earlier than later.
もし私があなただったら、後回しにしないではやめに勉強する

2. If I were him, I would buy this before it is sold out.
もし私が彼だったら、売り切れになる前にそれを買う

3. If I were a man, I would take up a martial art.
もし私が男だったら、格闘技を始めただろう

4. Were I an Englishman, I would like to work in London.
もし、イギリス人だったら、ロンドンで働きたい