勤勉さが彼の素晴らしい昇進の主要因だった。

Sentence Analyzer

English Translation

Diligence was the principal factor in his remarkable promotion.

Furigana

勤勉(きんべん)さが彼(かれ)の素晴(すば)らしい昇進(しょうしん)の主(しゅ)要因(よういん)だった。

Romanji

Kinbensa ga kare no subarashii shōshin no shu yōin datta.

Words

勤勉 (きんべん)

diligent; industrious

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

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

素晴らしい (すばらしい、すんばらしい)

wonderful; splendid; magnificent

昇進 (しょうしん)

promotion; advancement; rising in rank

主 (しゅ、しゅう)

(one's) master; Lord (Christian ref. to Jesus or God); the main thing; the majority; the primary concern

要因 (よういん)

main cause; primary factor

だ (だ)

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