samui hi wa atsui kooto o kite dekakemasu.

topic particle

Breakdown of samui hi wa atsui kooto o kite dekakemasu.

• を: direct object particle
• 寒さむい: cold
• 日ひ: day

Questions & Answers about samui hi wa atsui kooto o kite dekakemasu.

Why is 日 followed by は here?

は marks 寒い日 as the topic: as for cold days or on cold days.

So 寒い日は does not mean just the cold day. It sets up a general situation:

• On cold days, ...
• When it’s a cold day, ...

This is a very common Japanese pattern:

• 忙しい日は、家で食べます。
• 休みの日は、よく寝ます。

You may also see 寒い日には, which adds に and makes the time/condition feel a little more explicitly marked.

Why is it 寒い日 and not something like 寒な日?

Because 寒い is an い-adjective.

い-adjectives directly modify nouns:

• 寒い日 = cold day
• 厚いコート = thick coat
• 新しい本 = new book

Only な-adjectives use な before a noun:

• 静かな部屋
• 便利な店

So 寒い日 is the correct form.

How is 日 read in 寒い日?