いつ地震が起こるかわからない。

Sentence Analyzer

いつ 地震 起こる わからない

English Translation

There is no telling when an earthquake will occur.

Furigana

いつ地震(じしん)()こるかわからない。

Romanji

Itsu jishin ga okoru ka wakaranai.

Words

何時 (いつ)
when; how soon
地震 (じしん、ない、なえ、じぶるい)
earthquake
()
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
起こる (おこる)
to occur; to happen
()
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: チ、 ジ
Meanings: ground, earth
Readings: シン、 ふる.う、 ふる.える
Meanings: quake, shake, tremble, quiver, shiver
Readings: キ、 お.きる、 お.こる、 お.こす、 おこ.す、 た.つ
Meanings: rouse, wake up, get up