しゅぶ 主部 LinksSentence search for 主部Sentence search for しゅぶKanji details for 主 and 部Edit in JMdict Noun1. main part; principal partNoun2. subject (noun phrase)Grammar「しゅぶ主部」とは、ぶん文のなか中のどうさ動作をするひと人・もの物で、にほんご日本語になお直したばあい場合に「~は」「~が」になるぶぶん部分です。The "subject" is the person or object to carry out the action in the sentence. Transformed to Japanese it would be the part that end in "wa" or "ga". Discussions Log in to talk about this word.