聞いていた

was listening to, had heard about; had been told

→ 聞く
phrase Common #3,366
was listening to Describes paying attention to speech or other sounds over a period of time.
JA: 私はちゃんと聞いていた。
EN: I was listening carefully.

彼の話の間生徒は熱心に聞いていた。

The students listened attentively while he spoke.

君たちは全員、私たちの会話を聞いていたし、私が話すあいだに提案もしてくれた。

All of you listened to our conversation and even made suggestions while I was speaking.

私はちゃんと聞いていた。

I was listening carefully.

彼等は彼が本当は何を言いたいのかを理解しないまま、彼の言うことを聞いていた。

They listened to him without understanding what he really wanted to say.

phrase Rare #27,683
had heard about; had been told Used for information or a rumor you had heard before the time being discussed.
JA: 噂は聞いていたよ。
EN: I’d heard the rumor.

ウワサには聞いていたが完成してたのか

I’d heard the rumors, but it was already finished?

— Godzilla Minus One (2023)

何をするかは前もって聞いていたから、練習はできた。

Since I knew ahead of time what we were going to do, I was able to practice.

君のコテージだが、ああ、聞いていたね。

About your cottage—oh, right, I’d heard about it.

校長の気性が荒いという話は聞いていたが、実際に怒るところを見たことはなかった。

I’d heard the principal had a temper, but I’d never actually seen him get angry.

ケイが「値段は十一」と言うのを聞いていたから、きっと信じていなかっただろう。

Since I’d heard Kei say, “It’s eleven,” I probably didn’t believe him.

噂は聞いていたよ

I'd heard the rumors.

— もののけ姫 (1997)

船を見栄えよく仕上げるのも、聞いていた以上に金がかかるのだろう。

Making a boat look good probably costs more than I’d heard, too.