彼の意見に対して質問があります。

N5 彼 kare he N4 意見 iken opinion, view, idea N5 質問 shitsumon question N5 あります arimasu there is / exist

N3 彼 hi / kare, kano, ka.no he, that, the N4 意 i idea, mind, heart N5 見 ken / mi.ru, mi.eru, mi.seru see, hopes, chances N3 対 tai, tsui / aite, kota.eru, soro.i, tsurea.i, nara.bu, muka.u vis-a-vis, opposite, even N4 質 shitsu, shichi, chi / tachi, tada.su, moto, warifu substance, quality, matter N4 問 mon / to.u, to.i, ton question, ask, problem

N4 〜に対して ni taishite Indicates target, direction, attitude, or contrast toward something, attaches to a noun, means toward, against, or in relation to N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences 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