彼らの友情は徐々に愛情に変わっていった。

Sentence Analyzer

English Translation

By degrees their friendship grew into love.

Furigana

彼(かれ)らの友情(ゆうじょう)は徐々(じょじょ)に愛情(あいじょう)に変(か)わっていった。

Romanji

Karera no yūjō wa jojoni aijō ni kawatteitta.

Words

彼ら (かれら)

they (usually male); them

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

友情 (ゆうじょう)

friendship; fellowship; camaraderie

は (は)

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

愛情 (あいじょう)

love; affection

に (に)

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

変わる (かわる)

to change; to be transformed; to be altered; to vary; to move to; to be different; to be uncommon; to be unusual