飲んだの

did ... drink?

→ 飲む
phrase Rare #23,568
did ... drink? In casual questions, の adds an explanatory or confirmatory tone. The same phrase can also be used in statements, meaning “... drank.”
JA: 薬、もう飲んだの?
EN: Did you take your medicine yet?

ジョヴァンナと話したのだけそんなに飲んだの?

Did you drink that much just because you talked to Giovanna?

— Hoje Eu Quero Voltar Sozinho (2014)

今夜は何杯飲んだの?

How many drinks have you had tonight?

喫茶店でコーヒーを一杯飲んだの。

I had a cup of coffee at a café.

何を飲んだの?

What did you drink?

薬はもう飲んだの?

Have you taken your medicine yet?

薬は飲んだの?

Did you take your medicine?

お酒をいくら飲んだの?

How much did you drink?

毒を飲んだの

Did you drink poison?

— 惑星ソラリス (1972)

昨日の夜は、トムはどれくらい飲んだの?

How much did Tom drink last night?