彼、古代文明について研究してる

N5 彼 kare he N1 古代 kodai ancient times N3 文明 bummei civilization N4 研究 kenkyuu research, study, investigation

N3 彼 hi / kare, kano, ka.no he, that, the N4 古 ko / furu.i, furu-, -furu.su old, vieux, viejo N4 代 dai, tai / ka.waru, kawa.ru, kawa.ri, ka.wari, -gawa.ri, -ga.wari, ka.eru, yo, shiro substitute, change, convert N4 文 bun, mon / fumi, aya sentence, literature, style N4 明 mei, myou, min / a.kari, aka.rui, aka.rumu, aka.ramu, aki.raka, a.keru, -a.ke, a.ku, a.kuru, a.kasu bright, light, clair N4 研 ken / to.gu polish, study of, sharpen N4 究 kyuu, ku / kiwa.meru research, study, recherche

N4 〜について ni tsuite Indicates the topic or subject being discussed, attaches to a noun, means about or regarding N5 〜ている te iru Indicates ongoing action, continuous state, repeated habit, or resulting condition depending on context N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action