彼がいつ戻ってくるかわかりません。

Sentence Analyzer

戻ってくる わかりません

English Translation

I don't know when he'll come back.

Furigana

(かれ)がいつ(もど)ってくるかわかりません。

Romanji

Kare ga i tsu modottekuru ka wakarimasen.

Words

(かれ)
he; him; his; boyfriend
()
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
居る (いる)
to be (of animate objects); to exist; to stay; (after the -te form of a verb) verb indicating continuing action or state (i.e. to be ..ing, to have been ..ing)
()
indicates two contrasting actions; indicates possessive (often found in place names and compound words)
戻る (もどる)
to turn back (e.g. half-way); to return; to go back; to recover (e.g. something lost); to be returned; to rebound; to spring back
()
indicates a question (sometimes rhetorical); or; whether or not; some- (e.g. something, someone); indicates doubt, uncertainty, etc.; emphatic prefix; suffix forming adjectives or adverbs; in that way
分かる (わかる)
to understand; to comprehend; to grasp; to see; to get; to follow; to become clear; to be known; to be discovered; to be realized; to be realised; to be found out

Kanji

Readings: ヒ、 かれ、 かの、 か.の
Meanings: he, that, the
Readings: レイ、 もど.す、 もど.る
Meanings: re-, return, revert, resume, restore, go backwards