Word Meaning いつの間に

いつの間にかボブは外へ出ていた。

Bob went out before I knew it.

私はいつの間にかぐっすり眠っていた。

I fell sound asleep before I knew it.

いつの間にかこっちが笑われる立場になってた。

Before I knew it, the tables turned and I became the one they were laughing at.

いつの間にか、お前にはもう会いたくなくなってた。

Before I knew it, I didn't want to see you again.

あれ？いつの間に雨が降ってたんだろう。全然気付かなかった。

Eh? When did it start raining? I didn't notice at all.

昔はペチャパイだったのに、いつの間にかこんなに大きくなりやがって。

She used to be flat-chested - just when did she get so large?

「あれ？ここにパン屋さんなかった？」「それなら、とっくの昔に潰れちゃったよ」「うそ、いつの間に？」「半年前ぐらいかな」

"Huh, didn't the bakery store use to be here?" "Oh, it went bankrupt a while ago." "Really? When did that happen?" "I think it was about half a year ago."