倒れていた

had fallen over

→ 倒れる
phrase Rare #32,551
had fallen over Describes someone or something that had fallen and was still lying down or collapsed. Depending on context, it can mean “was lying collapsed” or “had been knocked over.”
JA: 道の真ん中に大きな木が倒れていた。
EN: A large tree had fallen in the middle of the road.

彼は仰向けに倒れていたのですか

Was he lying on his back?

前日台風で木が倒れていた

A tree had fallen because of the typhoon the day before.

彼は負傷して地面に倒れていた

He was injured and lying on the ground.

彼女はベッドの上うつ伏せ倒れていた

She was lying face down on the bed.