に気がつきましたか

did you notice

→ に

phrase Rare #44,860

did you notice The particle に marks what was noticed. It can also refer to noticing that something happened or was the case.

JA: 新しい看板に気がつきましたか。

EN: Did you notice the new sign?

いつ時計がないことに気がつきましたか。

When did you notice that your watch was missing?

狐の親子が走っていたのに気がつきましたか。

Did you notice the fox parent and its cubs running?

昨夜、地震に気がつきましたか。

Did you notice the earthquake last night?

彼女の新しいドレスに気がつきましたか。

Did you notice her new dress?