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Sentence

窓まど枠わくが古ふるくなったので交こう換かんした。

Span Details

窓まど枠わく

window frame; sash

古ふるく

old-fashioned; outmoded; out-of-date

-> 古いi-adjective

become; get; turn; grow

-> なるgodan verb, auxiliary

past tense or completed action

交こう換かん

exchange; swap; replacement

noun, suru verb

light/support verb with a noun or noun-like phrase

-> するgrammar