父(ちち) chichiが gaいつ itsu戻(もど)る() modoruか ka知(し)り()ま()せ()ん() shirimasen。 I don't know when my father will be back. Literal Father [subject-が] when returns [question-か] know-not [polite-ません]. いつ戻るか is an embedded wh-question: 'when he'll return.' The か marks the question clause as an object of 知る. A practical everyday sentence. familydaily lifeembedded questionembedded wh-question
父(ちち) chichiが gaいつ itsu戻(もど)る() modoruか ka知(し)り()ま()せ()ん() shirimasen。 I don't know when my father will be back. Literal Father [subject-が] when returns [question-か] know-not [polite-ません]. いつ戻るか is an embedded wh-question: 'when he'll return.' The か marks the question clause as an object of 知る. A practical everyday sentence. familydaily lifeembedded questionembedded wh-question