病(びょう)気(き) byoukiだった dattaので node、一(いち)日(にち)中(じゅう) ichinichijuu家(か) kaに niいた ita。 I was sick, so I stayed home all day. Literal Sick was [because-ので] all-day home [in-に] was. 一日中 means 'all day long' — 中 as a suffix meaning 'throughout.' 家にいた uses the existential いる for a person staying at a location. Natural and conversational. homehealth~ので (because)~中 (during/in the middle of)
病(びょう)気(き) byoukiだった dattaので node、一(いち)日(にち)中(じゅう) ichinichijuu家(か) kaに niいた ita。 I was sick, so I stayed home all day. Literal Sick was [because-ので] all-day home [in-に] was. 一日中 means 'all day long' — 中 as a suffix meaning 'throughout.' 家にいた uses the existential いる for a person staying at a location. Natural and conversational. homehealth~ので (because)~中 (during/in the middle of)