一生懸命勉強した

N4 一生懸命 isshoukenmei with utmost effort, very hard, earnestly N5 勉強 benkyou study, learning

N5 一 ichi, itsu / hito-, hito.tsu one, one radical (no.1), un N5 生 sei, shou / i.kiru, i.kasu, i.keru, u.mareru, uma.reru, u.mare, umare, u.mu, o.u, ha.eru, ha.yasu, ki, nama, nama-, na.ru, na.su, mu.su, -u life, genuine, birth N1 懸 ken, ke / ka.keru, ka.karu state of suspension, hang, depend N3 命 mei, myou / inochi fate, command, decree N4 勉 ben / tsuto.meru exertion, endeavour, encourage N4 強 kyou, gou / tsuyo.i, tsuyo.maru, tsuyo.meru, shi.iru, kowa.i strong, fort, fuerte

N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also