が買いたいんだ

want to buy

→ が

phrase Rare #24,142

want to buy が marks the thing the speaker wants to buy, while んだ adds an explanatory or emphatic tone. The ending んだ can also follow other forms, such as 買ったんだ (bought) or 買えなかったんだ (couldn't buy).

JA: 新しい靴が買いたいんだ。

EN: I want to buy new shoes.

トムは革のベルトが買いたいんだ。

Tom wants to buy a leather belt.

新しいパソコンが買いたいんだけど、お金がない。

I want to buy a new computer, but I don't have any money.

お菓子が買いたいんだけど、細かいのがないのよね。

I want to buy some snacks, but I don't have any small change.

地図が買いたいんだ。

I want to buy a map.

新しいノートパソコンが買いたいんだけど、先立つものがなくて。

I want to buy a new laptop, but I don't have the money for it.