It was not intended that anybody (should) overhear our conversation.
人に我々の話を立ち聞きさせるつもりはなかった
It was not long before she came.
彼女はほどなくやって来た
It was not till after midnight that I finished my homework.
私は夜中を過ぎてようやく宿題を終えた
It was not until I left college that I realized the importance of study.
((形式))大学を出て初めて勉強の大切さがよくわかった
It was not without its problems.
問題がないわけではなかった
It was nothing but a joke.
ほんの冗談だったのに
It was objected [Some objected] that ....
…という反対が出た
It was of great benefit to me.
私にはとても有益だった
It was of immense value to me.
それは私にとって非常に貴重なことだった
It was OK, but I liked the other one better.
それは悪くはなかったが,もう1つのほうがもっと気に入った