彼の調査を徹底的に行った

N5 彼 kare he N3 調査 chousa survey, investigation, research N3 徹底 tettei thoroughness, completeness

N3 彼 hi / kare, kano, ka.no he, that, the N3 調 chou / shira.beru, shira.be, totono.u, totono.eru tune, tone, meter N2 査 sa investigate, investigation, investigar N1 徹 tetsu penetrate, clear, pierce N2 底 tei / soko bottom, sole, depth N3 的 teki / mato bull's eye, mark, target N5 行 kou, gyou, an / i.ku, yu.ku, -yu.ki, -yuki, -i.ki, -iki, okona.u, oko.nau going, journey, carry out

N5 〜を o Marks the direct object of an action, appears before the verb, shows what receives the action N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase