父(ちち) chichiは wa旅(りょ)行(こう) ryokouの no準(じゅん)備(び) junbiで de忙(いそが)し()い() isogashii。 My father is busy preparing for a trip. Literal Father [topic-は] trip's preparation [because of-で] busy. 準備で忙しい uses causal で: 'busy because of preparations.' A compact structure — the cause (preparations) directly leads to the state (busy). familytravelで (cause/reason)
父(ちち) chichiは wa旅(りょ)行(こう) ryokouの no準(じゅん)備(び) junbiで de忙(いそが)し()い() isogashii。 My father is busy preparing for a trip. Literal Father [topic-は] trip's preparation [because of-で] busy. 準備で忙しい uses causal で: 'busy because of preparations.' A compact structure — the cause (preparations) directly leads to the state (busy). familytravelで (cause/reason)