zutsuu ga hidoi toki wa, hayame ni nemasu.

topic particle

Breakdown of zutsuu ga hidoi toki wa, hayame ni nemasu.

• が: subject particle
• とき: when
• 寝ねる: to sleep

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

Why is it 頭痛がひどい instead of 頭が痛い?

Both can talk about a headache, but they are structured differently:

• 頭が痛い = my head hurts
• 頭痛がひどい = the headache is severe

So in this sentence, the speaker is not just saying there is pain in the head, but that the headache itself is bad/intense.

A useful way to think about it:

• 頭 = head
• 頭痛 = headache
• 痛い = painful / hurts
• ひどい = severe / awful / bad

Because 頭痛 is already a noun meaning headache, it makes sense to describe it with ひどい.

What does the particle が do in 頭痛がひどい?

Here, が marks 頭痛 as the thing being described.

So:

• 頭痛がひどい = the headache is severe

This is a very common pattern in Japanese:

• Noun + が + adjective
• 雨が強い = the rain is strong
• 風が冷たい = the wind is cold

In this sentence, ひどい is the adjective, and 頭痛が is what is severe.

What exactly does ひどい mean here?