я не знал, где

I didn't know where

→ я
phrase Uncommon #24,013
I didn't know where Used by a male speaker to say that he did not know the location or place associated with something. A female speaker would say «я не знала, где»; the following clause describes what he did not know.
RU: Я не знал, где находится ближайшая аптека.
EN: I didn't know where the nearest pharmacy was.

Я не знал, где ты.

I didn't know where you were.

Я не знал, где Том работает.

I didn’t know where Tom worked.

Я не знал, где мой зонтик.

I didn't know where my umbrella was.

Я не знал, где выходить из автобуса.

I didn't know where to get off the bus.

Я не знал, где огнетушитель.

I didn't know where the fire extinguisher was.

Я не знал, где мои друзья.

I didn't know where my friends were.

Я не знал, где Том.

I didn't know where Tom was.

Я не знал, где моя семья.

I didn't know where my family was.

Я не знал, где мне сесть на автобус.

I didn’t know where to catch the bus.