彼は勉強に集中できない

N5 彼 kare he N5 勉強 benkyou study, learning N3 集中 shuuchuu concentration, focus, centralization N5 ない nai there isn't, doesn't have

N3 彼 hi / kare, kano, ka.no he, that, the 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 集 shuu / atsu.maru, atsu.meru, tsudo.u gather, meet, congregate N5 中 chuu / naka, uchi, ata.ru in, inside, middle

N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information