彼が入ってきた時真っ暗だった。

彼が入ってきた時真っ暗だった。

It was dark when he came in.

彼(かれ)が入(はい)ってきた時(とき)真(ま)っ暗(くら)だった。

Kare ga haittekita toki makkura datta.

彼 (かれ)

he; him; his; boyfriend

が (が)

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

入る (いる)

to get in; to go in; to come in; to flow into; to set; to set in

時 (とき)

time; hour; moment; occasion; case; chance; opportunity; season; the times; the age; the day; tense

真っ暗 (まっくら)

total darkness; pitch dark; bleak future; poor prospects

だ (だ)

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

Readings: ヒ、かれ、かの、か.の

Meanings: he, that, the

Readings: ニュウ、ジュ、い.る、 -い.る、 -い.り、い.れる、 -い.れ、はい.る

Meanings: enter, insert

Readings: ジ、とき、 -どき

Meanings: time, hour

Readings: シン、ま、ま-、まこと

Meanings: true, reality, Buddhist sect

Readings: アン、くら.い、くら.む、くれ.る

Meanings: darkness, disappear, shade, informal, grow dark, be blinded