最上川の川べりを歩いたのは初めて。

Sentence Analyzer

最上川の川べりを歩いたのは初めて。

English Translation

It was the first time I'd walked along the Mogami River.

Furigana

最上川(もがみがわ)の川(かわ)べりを歩(ある)いたのは初(はじ)めて。

Romanji

Mogamigawa no kawaberi o aruita no wa hajimete.

Words

の (の)

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

川縁 (かわぶち、かわべり)

riverbank; riverside

を (を)

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

歩く (あるく)

to walk

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

初めて (はじめて)

for the first time; only after ... is it ...; only when ... do you ...