いつの間にか小鳥たちは見えなくなった。
Sentence Analyzer
English Translation
Before I knew it, I couldn't see the birds.
Furigana
いつの間 にか小鳥 たちは見 えなくなった。
Romanji
Itsunomanika kotoritachi wa mienaku natta.
Words
いつの間にか
(いつのまにか)
before one knows; before one becomes aware of; unnoticed; unawares
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
見える
(まみえる)
to have an audience; to meet; to see; to face (an enemy); to confront; to serve (esp. as one's wife)
成る
(なる)
to become; to get; to grow; to be; to reach; to attain; to result in; to prove to be; to consist of; to be composed of; to succeed; to be complete; to change into; to be exchanged for; to play a role; to be promoted; to do ...