atsui node, shatsu no sode o makurimasu.

Because it is hot, I roll up my shirt sleeves.

Breakdown of atsui node, shatsu no sode o makurimasu.

• を: direct object particle
• 暑あつい: hot
• の: possessive case particle
• ので: reason particle

Questions & Answers about atsui node, shatsu no sode o makurimasu.

Why is ので used here? How is it different from から?

Both ので and から can mean because, but they have a slightly different feel.

• ので sounds a bit more neutral, explanatory, and gentle.
• から often sounds more direct or more like the speaker’s personal reason.

So:

• 暑いので、シャツの袖をまくります。 = Because it’s hot, I roll up my shirt sleeves.

This sounds natural when simply explaining the reason for the action.

If you used から instead, it would still be correct:

• 暑いから、シャツの袖をまくります。

That version is a little more casual and direct.

Why is it 暑いので and not 暑いだので?

Because 暑い is an い-adjective, and い-adjectives do not use だ before ので.

So:

• correct: 暑いので
• incorrect: 暑いだので

Compare:

• い-adjective: 暑いので
• な-adjective: 静かなので
• noun: 休みなので

For な-adjectives and nouns, a form related to だ appears before ので, but not with い-adjectives.