このプロジェクトで、彼の役は大きい

N5 この kono this N3 プロ puro professional N5 彼 kare he N3 役 yaku role, function, position N5 大きい ookii big, large

N3 彼 hi / kare, kano, ka.no he, that, the N3 役 yaku, eki duty, war, campaign N5 大 dai, tai / oo-, oo.kii, -oo.ini large, big, grand

N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information