wǒ jīntiān bù tài shūfu.

A very common Mandarin pattern is:

Subject + Time + Predicate

So:

• 我 = I
• 今天 = today
• 不太舒服 = not feeling very well / not very comfortable

That makes 我今天不太舒服 a completely natural sentence.

Mandarin often places time words before the main description or action. That is why 今天 comes before 不太舒服.

You can also say:

• 今天我不太舒服。

That is also correct. It just puts a bit more attention on today.

不太 means not very, not quite, or not especially.

So 不太舒服 means:

• not very well
• not quite comfortable
• not feeling too good

It is often a softer and more polite way to describe a problem.

Compare:

• 我今天不太舒服。 = I’m not feeling very well today.
• 我今天很不舒服。 = I’m feeling very unwell today.

The first one sounds milder.

Yes. 太 often means too or very, depending on context.

For example:

• 太贵了 = too expensive / very expensive
• 太好了 = great / wonderful

But when you put 不 before it, 不太 becomes a very common expression meaning:

• not very
• not particularly
• not quite

So in this sentence:

• 不太舒服 = not very well

This is a fixed, natural pattern in Mandarin.

Because 舒服 is not a noun. It describes a state or condition.

In Mandarin, 是 is mainly used to connect:

• noun + noun
• pronoun + noun

For example:

• 我是老师。 = I am a teacher.

But with many adjectives or stative words, Mandarin usually does not use 是.

So you say:

• 我很累。 = I am tired.
• 我不舒服。 = I am unwell.

Not:

• 我是舒服。 ✘

That would sound unnatural.

For learners, it is easiest to think of 舒服 as a stative adjective or state word.

It describes how someone feels:

• comfortable
• well
• at ease

In Chinese grammar, words like this often behave a bit like verbs in sentences, because they can directly serve as the predicate:

• 我很舒服。
• 我不舒服。

So even though English uses to be plus an adjective, Mandarin often just uses the state word itself.

It can mean both, depending on context.

Common meanings include:

• physically comfortable
• feeling well
• at ease

In 我今天不太舒服, most people will understand it as:

• I’m not feeling well today
• often with a physical-health meaning

But 舒服 can also be used in other situations:

• 这个椅子很舒服。 = This chair is comfortable.
• 我心里不舒服。 = I feel bad inside / I feel upset.

So context matters.

Yes, the tone is different.

• 我今天不太舒服。 = I’m not feeling very well today.

  • softer
  • less severe
  • often more polite or indirect

• 我今天很不舒服。 = I’m feeling very unwell today.

  • stronger
  • more serious

So if you only feel a little sick, 不太舒服 is often a natural choice.

Yes, absolutely.

Both are natural:

• 我今天不太舒服。
• 今天我不太舒服。

The difference is mainly emphasis:

• 我今天不太舒服 starts with I
• 今天我不太舒服 highlights today

Mandarin is flexible with time expressions, especially when they appear near the beginning of the sentence.

Because this sentence describes a present state, not the completion or non-completion of an action.

• 不 is commonly used to negate:

  • habits
  • general facts
  • present/future states

• 没 is commonly used to negate:

  • past actions
  • possession
  • something that did not happen

Here, 舒服 describes a current condition, so 不 is the normal choice:

• 我今天不太舒服。

Using 没 here would not sound natural in standard Mandarin.

It is usually pronounced:

• shūfu

More specifically:

• 舒 = first tone, shū
• 服 = usually a neutral tone here, so it sounds light: fu

So learners often hear it as:

• shūfu

not a strong full second syllable.

That neutral tone is very common in everyday speech.

Yes.

• 我不太舒服。 = I’m not feeling very well.

Adding 今天 simply gives a time reference:

• 我今天不太舒服。 = I’m not feeling very well today.

If the time is already clear from context, Mandarin often omits it.

It is neutral and very natural in everyday speech.

You could use it:

• with friends
• with coworkers
• with a teacher
• at a doctor’s office

It sounds polite and normal.

If you want to sound even more direct or serious, you might say:

• 我今天很不舒服。

If you want to sound even softer, you could say:

• 我今天有点儿不舒服。 = I’m a little unwell today.

So 我今天不太舒服 is a very useful everyday sentence.