って知らなかったの

didn't know that

→ って

phrase Uncommon #14,074

didn't know that A casual way to ask whether someone was unaware of something. って is a casual quotative form of という, marking the information that follows; の adds a questioning tone here.

JA: 明日が休みだって知らなかったの？

EN: You didn't know that tomorrow is a day off?

トムがメアリーより年上だって知らなかったの？

Didn't you know Tom is older than Mary?

私がそれをしたくなかったって知らなかったの？

Didn't you know I didn't want to do that?

トムがメアリーの彼氏だって知らなかったの？

Didn't you know Tom was Mary's boyfriend?

トムがフランス語も話すって知らなかったの？

Didn't you know Tom speaks French too?

トムの親戚がオーストラリアにいるって知らなかったの？

Didn't you know Tom has relatives in Australia?

トムがお金持ちだって知らなかったの？

Didn't you know Tom was rich?

トムがオーストラリア出身だって知らなかったの？

Didn't you know that Tom is from Australia?