1.
someone, somebody
An unspecified person.
誰か来ましたか。
Did someone come?
誰かに聞いてみよう。
Let's ask someone.
誰かが電話している。
Someone is making a phone call.
誰かいい人を知りませんか。
Do you know someone good?
外で誰かが大きい声で話しているのが聞こえた。
I could hear someone talking loudly outside.
誰か means "someone" or "somebody" - an unspecified person.
FORMATION:
誰 (who) + か (question particle) = someone
INDEFINITE PRONOUN PATTERN:
Question word + か = indefinite:
- 誰か: someone
- 何か: something
- どこか: somewhere
- いつか: sometime
- 何とか: somehow
NEGATIVE FORMS (with も + negative verb):
- 誰も〜ない: no one
- 何も〜ない: nothing
- どこも〜ない: nowhere
COMMON PATTERNS:
- 誰かいますか: Is anyone there?
- 誰かに聞く: to ask someone
- 誰か来た: Someone came