zutsuu ga hidoi node, kyou wa hayame ni nemasu.

topic particle

Breakdown of zutsuu ga hidoi node, kyou wa hayame ni nemasu.

• 今きょ日う: today
• が: subject particle
• ので: reason particle

Questions & Answers about zutsuu ga hidoi node, kyou wa hayame ni nemasu.

Why is が used after 頭痛 instead of は?

頭痛がひどい is the natural way to say that the headache is severe.

Here, が marks 頭痛 as the thing being described by ひどい. In other words, the sentence is saying the headache is severe.

If you used 頭痛はひどい, it would sound more contrastive or topic-based, as if you were specifically talking about the headache as a topic, maybe in contrast with something else. For a simple description, 頭痛がひどい is more natural.

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What exactly does ひどい mean here?

In this sentence, ひどい means something like severe, bad, or terrible.

So 頭痛がひどい means the headache is not just present, but quite bad.
This is a very common way to describe symptoms:

• せきがひどい = the cough is bad
• 風邪がひどい = the cold is severe

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

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

• ので sounds softer, more explanatory, and often a bit more polite
• から can sound more direct and straightforward

In this sentence, 頭痛がひどいので、今日は早めに寝ます sounds natural and polite, like giving a reason for your action.

Compare:

• 頭痛がひどいので、今日は早めに寝ます。
  Softer, explanatory
• 頭痛がひどいから、今日は早めに寝ます。
  More direct, still natural in casual speech

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