彼らの友情は深い愛情に発展した。

Sentence Analyzer

彼らの友情は深い愛情に発展した。

English Translation

Their friendship ripened into a deep love.

Furigana

彼(かれ)らの友情(ゆうじょう)は深(ふか)い愛情(あいじょう)に発展(はってん)した。

Romanji

Karera no yūjō wa fukai aijō ni hattenshita.

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

深い (ふかい)

deep; profound; dense; thick; close (relationship); intense; strong; late

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

発展 (はってん)

development; growth; advancement; unfurling; expansion; extension; enlargement; playing around; having an active sex life