どこで習った

where did you learn

→ どこ
phrase Rare #39,204
where did you learn The subject and what was learned are usually understood from context. Often used in casual questions.
JA: その料理、どこで習ったの?
EN: Where did you learn to make that dish?

トムが、スキーはどこで習ったかって聞いてきたんだ。

Tom asked me where I learned to ski.

そんなこと、どこで習ったの?

Where did you learn that?

どこで習った

Where did you learn that?

— いまを生きる (1989)

ポルトガル語はどこで習ったの?

Where did you learn Portuguese?