mise no mizu wa yuuryou da kara, kozeni ga nai to komarimasu.

Water at the store costs money, so it’s a problem if I don’t have coins.

Breakdown of mise no mizu wa yuuryou da kara, kozeni ga nai to komarimasu.

• は: topic particle
• 水みず: water
• が: subject particle
• の: possessive case particle

Questions & Answers about mise no mizu wa yuuryou da kara, kozeni ga nai to komarimasu.

How do you read this sentence?

• Kana: 店（みせ）の水（みず）は有料（ゆうりょう）だから、小銭（こぜに）がないと困（こま）ります。
• Romaji: Mise no mizu wa yūryō dakara, kozeni ga nai to komarimasu.

Why is の used in 店の水? Could I use で or は instead?

• の links two nouns: 店の水 = “the store’s water” / “water of the store.”
• で would mean “at the store,” focusing on location: 店で水は有料だ = “At the store, water costs money.”
• は would topicalize the store: 店は水が有料だ = “As for the store, the water is not free.”
  Use の when you want a possessive/attributive relationship (“the store’s water”), and で/は when focusing on location/topic.

Why is は after 水? Could it be が instead?

• 水は marks water as the topic (“as for water”). It can also create a contrast (e.g., “as for water (unlike other things)…”).
• 水が would mark “water” as the subject/new info. 店の水が有料だ puts stronger emphasis on identifying water as the thing that’s charged.
• In a general statement like this, 水は is natural.

What part of speech is 有料, and why do we need だ before から?