これがきのう私が来なかった理由です。

Sentence Analyzer

これがきのう私が来なかった理由です。

English Translation

This is the reason why I didn't come yesterday.

Furigana

これがきのう私(わたし)が来(こ)なかった理由(りゆう)です。

Romanji

Kore ga kinō watashi ga konakatta riyū desu.

Words

此れ (これ)

this (indicating an item near the speaker, the action of the speaker, or the current topic); this person (usu. indicating someone in one's in-group); now; here; I (me); certainly

が (が)

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

機能 (きのう)

function; facility; faculty; feature

私 (わたし、わたくし)

I; me; private affairs; personal matter; secrecy; selfishness

来る (くる)

to come (spatially or temporally); to approach; to arrive; to come back; to do ... and come back; to come to be; to become; to get; to grow; to continue; to come from; to be caused by; to derive from; to come to (i.e. "when it comes to spinach ...")

理由 (りゆう、わけ)

reason; pretext; motive

です (です)

be; is