本(ほん)当(とう)に() hontouni骨(ほね) honeの no折(お)れ()る() oreru仕(し)事(ごと) shigotoだった datta。 It really was back-breaking work. worksubject omissionが → の in relative clausesrelative clause modifying a noun骨が折れる (laborious)
僕(ぼく) bokuは wa骨(ほね)折(お)り() honeori仕(し)事(ごと) shigotoで deくたくた kutakutaだ da。 I'm exhausted from backbreaking work. workhealthで (cause/reason)骨が折れる (laborious)くたくた (worn out/limp)