彼は天文学、即ち天文の学問の偉大な権威であった。

Sentence Analyzer

English Translation

He was a great authority on astronomy, or the science of the heavenly bodies.

Furigana

彼(かれ)は天文学(てんもんがく)、即(すなわ)ち天文(てんもん)の学問(がくもん)の偉大(いだい)な権威(けんい)であった。

Romanji

Kare wa tenmongaku, sunawachi tenmon no gakumon no idaina ken'i de atta.

Words

彼 (かれ)

he; him; his; boyfriend

は (は)

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

天文学 (てんもんがく)

astronomy

即ち (すなわち)

that is; namely; i.e.

天文 (てんもん)

astronomy

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

学問 (がくもん)

scholarship; study; learning

偉大 (いだい)

greatness

権威 (けんい)

authority; power; influence

だ (だ)

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

或 (ある)

a certain ...; some ...