過去の起こらなかったことに対する空想 ～The third conditional～

「もしも過去に起こっていたら、今こうなってたんじゃねーかな・・・」
という完全な空想 (100%非現実)

▼ 基本の例文
If the presenters had given us more handouts, we would have understood better.

▼ 主語が I の場合 had と would はどちらも 'd に省略して記載される。
If I had known that people wanted a lot of technical information, I would have prepared a longer handout.
↓
If I’d known that people wanted a lot of technical information, I’d have prepared a longer handout.

▼ 例文 (応用)
・If I hadn’t been late, I wouldn’t have missed the meeting.
・We wouldn’t have increased our sales if we hadn’t launched our new product.
・I would have taken the job if the salary hadn’t been so low.