彼はその党に入党することを決めた

N5 彼 kare he N5 その sono that, that one near listener N3 党 tou party (political) N5 する suru do, perform, try N1 決 ketsu decision, vote

N3 彼 hi / kare, kano, ka.no he, that, the N2 党 tou / nakama, mura party, faction, clique N5 入 nyuu, ju / i.ru, -i.ru, -i.ri, i.reru, -i.re, hai.ru enter, insert, entrer N3 決 ketsu / ki.meru, -gi.me, ki.maru, sa.ku decide, fix, agree upon

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 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements 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