"If I hadn’t forced him to study hard, he might not have hated studying."
"If I didn't force him to study so hard"
Taekoさんの文書はほとんど完璧ですが "force" を過去形にするので "forced" になります。
- "If I hadn’t forced him to study hard, he might not have hated studying."
"If I hadn't ~" 「〜しなければ」
"forced him to ~" 「無理やり〜させた」
"to study" 「勉強する」
"If I hadn't forced him to study" 「「息子に無理やり勉強させなかったら」代わりに
"he might not have ~" 「彼は〜にならなかったかもしれない」
"hated studying" 「勉強嫌い」
- "If I didn't force him to study so hard"
"If I hadn't forced ~" の代わりに "If I didn't force ~" を使えます。 "didn't" は過去形なので "force" が現在形になります。
"If I didn't force ~" 「無理やり〜させなかったら」