彼の行動は私の最大の関心事だ。

Sentence Analyzer

彼の行動は私の最大の関心事だ。

English Translation

His behavior is my primary concern.

Furigana

彼(かれ)の行動(こうどう)は私(わたし)の最大(さいだい)の関心事(かんしんじ)だ。

Romanji

Kare no kōdō wa watashi no saidai no kanshinji da.

Words

彼 (かれ)

he; him; his; boyfriend

の (の)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

行動 (こうどう)

action; conduct; behaviour; behavior; mobilization; mobilisation

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

私 (わたし、わたくし)

I; me; private affairs; personal matter; secrecy; selfishness

最大 (さいだい)

biggest; greatest; largest; maximum

関心事 (かんしんじ)

matter of concern and interest

だ (だ)

be; is; indicates past or completed action; indicates light imperative