taion ga takai node, kyou ha ie de yasumimasu.

Japanese often leaves out the subject and other information if it is clear from context.

So in:

体温が高いので、今日は家で休みます。

the speaker most likely means:

• my body temperature is high
• I will rest at home today

English usually needs those words, but Japanese often does not.

Here, が marks 体温 as the thing that has the property high.

• 体温が高い = the body temperature is high

This is a natural way to state a condition.

If you said 体温は高い, it would sound more like:

• as for my temperature, it’s high
• possibly with contrast, such as but something else is normal

So が is the more neutral and natural choice here.

Yes, 高い has several meanings depending on context, and one of them is high in level or value.

With temperature, 高い means high:

• 体温が高い = body temperature is high
• 値段が高い = price is high / expensive
• 背が高い = tall

So this is a normal use of 高い.

Both can relate to temperature, but they are not exactly the same.

• 体温 = body temperature
• 熱 = heat, fever, temperature

In everyday Japanese, people often say:

• 熱があります = I have a fever
• 熱が高い = the fever is high / temperature is high

体温 is a bit more literal and specific: body temperature.
So 体温が高い sounds like my body temperature is high.

ので means because or so.

In this sentence:

• 体温が高いので = because my temperature is high

Then the result follows:

• 今日は家で休みます = I will rest at home today

So the whole flow is:

• Because my temperature is high, I’ll rest at home today.

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

ので

• often sounds softer
• can sound more objective or explanatory
• common in polite speech

から

• can sound more direct
• often feels more like the speaker’s personal reason or assertion

So:

• 体温が高いので、今日は家で休みます。

  • softer, natural, polite

• 体温が高いから、今日は家で休みます。

  • also correct, but a bit more direct

The particle は marks 今日 as the topic:

• 今日は = as for today / today

This helps frame the sentence:

• As for today, I’ll rest at home.

It can also give a slight sense of contrast, like:

• today I’m staying home
• maybe on another day, I would do something else

Without は, the sentence would still be understandable in some contexts, but 今日は sounds more natural here.

Because で marks the place where an action happens.

• 家で休みます = rest at home

Here, resting is the action, so で is used.

By contrast, に is often used for:

• destination: 家に帰る = go home
• existence: 家にいる = be at home

So:

• 家で休む = rest at home
• 家にいる = be at home

Both are possible in Japanese, but they mean slightly different things.

休みます comes from 休む, which can mean:

• to rest
• to take a break
• to take time off
• to be absent from work or school, depending on context

In this sentence, it most naturally means:

• I’ll rest
• I’ll stay home and rest
• possibly I’ll take the day off and rest at home

So it is broader than just sleep.

In Japanese, politeness is usually shown mainly in the final predicate of the sentence.

Here, the final verb is:

• 休みます = polite form of 休む

The earlier part:

• 体温が高いので

does not need extra politeness marking in the same way.

This is normal Japanese sentence structure:

• plain adjective/clause first
• polite verb at the end

So the sentence is polite because it ends with 休みます.

Yes. 体温が高い is a complete clause meaning:

• my body temperature is high

Then ので connects that clause to the next one:

• 体温が高いので、今日は家で休みます。
• Because my temperature is high, I’ll rest at home today.

So ので attaches to the clause and turns it into a reason.

A rough breakdown is:

• 体温が高いので = because my temperature is high
• 今日は = as for today
• 家で = at home
• 休みます = will rest

Japanese often puts:

1. reason/background first
2. time/topic information
3. place
4. main verb at the end

So the verb usually comes last.

Yes, depending on context.

休みます can simply mean rest, but in real life it may also imply:

• staying home from work
• staying home from school
• taking the day off because of illness

The sentence itself does not explicitly say from work or from school, but that idea can easily be understood from context.

The comma in:

体温が高いので、今日は家で休みます。

helps separate the reason from the main statement. It makes the sentence easier to read.

It is natural to include it, but Japanese punctuation is often more flexible than English punctuation. The sentence would still be understandable without it.