У меня болит горло, поэтому я не буду пить холодную воду.

Russian often uses the pattern у + person in the genitive + болит / болят + body part for physical pain.

So:

• у меня = at me / in my case
• болит = hurts
• горло = throat

Literally, it is something like At me, the throat hurts, but in natural English we say My throat hurts.

This structure is very common with body parts:

• У меня болит голова. = My head hurts.
• У меня болят ноги. = My legs hurt.

You do not normally say я болею горло. The verb болеть in this pattern is used with the body part as the grammatical subject.

Because Russian is not expressing simple possession here. It is expressing a state or condition affecting a person.

Compare:

• моё горло = my throat
• у меня болит горло = my throat hurts

In English, we often use possessive adjectives like my, but Russian very often uses у меня in sentences about age, possession, feelings, and physical states:

• У меня есть брат. = I have a brother.
• У меня температура. = I have a fever.
• У меня болит горло. = My throat hurts.

So у меня is the normal and idiomatic choice here.

Because горло is singular, and the verb agrees with it.

• горло = singular neuter noun
• therefore: болит = singular

If the thing hurting were plural, you would use болят:

• У меня болят ноги. = My legs hurt.
• У меня болят зубы. = My teeth hurt.

So the verb matches the body part, not меня.

Because горло is the grammatical subject of болит.

In this construction, the body part is the thing that hurts, so it takes the nominative:

• горло болит
• голова болит
• спина болит

Meanwhile, меня is in the genitive because it follows у:

• у меня
• у тебя
• у него

So the structure is:

• у + genitive person
• verb
• nominative body part

Поэтому means therefore, that’s why, or so.

It connects the two ideas:

• У меня болит горло = my throat hurts
• поэтому я не буду пить холодную воду = therefore I will not drink cold water

It introduces the result or consequence.

A very similar English structure would be:

• My throat hurts, so I won’t drink cold water.

It is common to place поэтому after a comma, as in your sentence.

Because пить is an imperfective verb, and the future of imperfective verbs is formed with быть in the future + infinitive.

So:

• буду пить = I will be drinking / I will drink
• не буду пить = I will not drink

Russian has two main ways to talk about the future:

1. Imperfective future: буду + infinitive
   Used when the action is seen as a process, habit, or general action.

2. Perfective future: a single future form
   For example: выпью from выпить

Here, не буду пить холодную воду sounds natural because it means I am not going to drink cold water in general.

Yes, but it is not exactly the same.

• не буду пить холодную воду focuses on the action in general: I won’t drink cold water
• не выпью холодную воду uses the perfective verb выпить, which often suggests completing the act of drinking: I won’t drink up / I won’t have cold water

In this sentence, не буду пить is more natural because it expresses a general decision or refusal, not a single completed act.

A rough contrast:

• Я не буду пить кофе вечером. = I won’t drink coffee in the evening.
• Я не выпью это лекарство. = I won’t take/drink this medicine.

Because холодную воду is the direct object of пить, so it must be in the accusative case.

Base form:

• холодная вода = cold water

Accusative singular:

• холодную воду

Both the adjective and the noun change because they agree in case, gender, and number:

• вода → воду
• холодная → холодную

Since вода is feminine singular, the adjective also takes the feminine singular accusative ending.

Because the sentence contains two clauses:

• У меня болит горло
• я не буду пить холодную воду

Поэтому connects them as a logical result, and Russian normally separates such parts with a comma.

So the punctuation is standard:

• У меня болит горло, поэтому я не буду пить холодную воду.

This is similar to English punctuation in a sentence like:

• My throat hurts, so I won’t drink cold water.

It is not always strictly necessary, because the verb form буду already shows first person singular.

So in context, you could say:

• Поэтому не буду пить холодную воду.

However, я is often included for clarity, balance, or emphasis. In a full sentence like this, keeping я sounds completely natural.

Russian often omits subject pronouns when they are obvious, but it does not have to.

Yes. Russian word order is flexible, though some versions sound more neutral than others.

Your sentence:

• У меня болит горло, поэтому я не буду пить холодную воду.

This is a very natural, neutral order.

Possible variations:

• Поэтому я не буду пить холодную воду: у меня болит горло.
  Less neutral; sounds more structured or explanatory.

• Я не буду пить холодную воду, потому что у меня болит горло.
  Also very natural, but now the cause is introduced with потому что = because instead of поэтому = therefore/so.

So the order can change, but the original sentence is a standard and idiomatic way to say it.

They express opposite directions of logic.

• поэтому = therefore / so
  First you state the cause, then the result.

  У меня болит горло, поэтому я не буду пить холодную воду.

• потому что = because
  First you state the result, then the cause.

  Я не буду пить холодную воду, потому что у меня болит горло.

Both are correct, but the structure changes:

• cause + therefore + result
• result + because + cause

No, not exactly.

• У меня болит горло means a specific body part hurts: My throat hurts
• Я болею means I am ill / I am sick

So болит горло talks about pain in the throat, while болею talks about being sick more generally.

For example:

• У меня болит горло, но я не болею. = My throat hurts, but I’m not sick.
• Я болею, у меня температура и болит горло. = I’m sick; I have a fever and my throat hurts.

The main stresses are:

• у меня́
• боли́т
• го́рло
• поэ́тому
• не бу́ду
• пить
• холо́дную
• во́ду

This is useful because some of these words are not stressed where an English speaker might expect, especially:

• поэ́тому
• холо́дную
• во́ду

Learning the stress early will help your pronunciation a lot.