彼の部屋に明かりがついているから、彼は帰宅したにちがいない。

Sentence Analyzer

English Translation

Since the light in his room is on, he must have come home.

Furigana

彼(かれ)の部屋(へや)に明(あ)かりがついているから、彼(かれ)は帰宅(きたく)したにちがいない。

Romanji

Kare no heya ni akari ga tsuiteiru kara, kare wa kitakushita ni chigainai.

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

部屋 (へや)

room; apartment; flat; pad; chamber; stable

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

明かり (あかり)

light; illumination; glow; gleam; lamp; light

が (が)

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

点く (つく)

to be lit (e.g. electricity comes on); to be lighted; to catch fire

から (から)

from (e.g. time, place, numerical quantity); since; from (originator); by; because; since; out of (constituent, part); through (e.g. window, vestibule); after; since

は (は)

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

帰宅 (きたく)

returning home

近い (ちかい)

near; close; short (distance)