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Sentence analysis
6Spans
Sentence
Span Details
後ろ
back; behind; rearnoun, no-adjective
で
location, means, or scope markergrammar
音がした
make a sound; give off a sound; hear a sound-> 音がするexpression, suru verb
ので
because; sincegrammar
振り返っ
turn around; look back; look over one's shoulder; look back on; reflect on; reminisce about-> 振り返るgodan verb
た。
past tense or completed actiongrammar