彼の理論は入念な調査に基づいている。

Sentence Analyzer

彼の理論は入念な調査に基づいている。

English Translation

His theory is based on careful research.

Furigana

彼(かれ)の理論(りろん)は入念(にゅうねん)な調査(ちょうさ)に基(もと)づいている。

Romanji

Kare no riron wa nyūnenna chōsa ni motozuiteiru.

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

理論 (りろん)

theory

は (は)

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

入念 (にゅうねん)

careful; elaborate; scrupulous

調査 (ちょうさ)

investigation; examination; inquiry; enquiry; survey

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

基づく (もとづく)

to be grounded on; to be based on; to be due to; to originate from