父(ちち) chichiは waテレビ terebiを o見(み)て()い()る() miteiruとき tokiに niよく yoku寝(ね)て() neteしまう shimau。 My father often falls asleep while watching TV. Literal Father [topic-は] TV [object-を] is-watching [when-とき] [at-に] often fall-asleep-unintentionally. ~ているとき means 'while doing X.' てしまう here expresses unintended completion — falling asleep wasn't planned. A very relatable, natural sentence. familydaily lifeentertainment~とき (when)~てしまう (regret/completion)
父(ちち) chichiは waテレビ terebiを o見(み)て()い()る() miteiruとき tokiに niよく yoku寝(ね)て() neteしまう shimau。 My father often falls asleep while watching TV. Literal Father [topic-は] TV [object-を] is-watching [when-とき] [at-に] often fall-asleep-unintentionally. ~ているとき means 'while doing X.' てしまう here expresses unintended completion — falling asleep wasn't planned. A very relatable, natural sentence. familydaily lifeentertainment~とき (when)~てしまう (regret/completion)