Potřebuji pomoc.

• Potřebuji = I need
• pomoc = help

Grammatically:

• Potřebuji is a 1st person singular verb form, so it already includes the subject I
• pomoc is a noun, not a verb, in this sentence

So Czech does not need a separate word for I here.

In Czech, the verb ending often tells you who the subject is.

• potřebuji already means I need
• potřebuješ would mean you need
• potřebuje would mean he/she/it needs

Because of that, já is usually omitted unless you want emphasis or contrast.

• Potřebuji pomoc. = normal, neutral
• Já potřebuji pomoc. = I need help, with extra emphasis

It is in the accusative case, because potřebovat usually takes a direct object.

A useful detail is that pomoc is one of those nouns whose nominative and accusative forms look the same:

• nominative: pomoc
• accusative: pomoc

So even though the form does not change here, the grammatical role is still accusative.

It is a noun here, meaning help as a thing.

That can be confusing for English speakers because English help can be both:

• a noun: I need help
• a verb: Please help me

In Czech:

• pomoc = the noun help
• pomoci / pomáhat = verbs meaning to help

So Potřebuji pomoc. literally uses the noun: I need help.

A rough learner-friendly pronunciation is:

• Potřebuji ≈ PO-trzhe-boo-yi
• pomoc ≈ PO-mots

A few important notes:

• Stress in Czech is usually on the first syllable, so: PO-třebuji, PO-moc
• c is pronounced like ts
• ř is the famous Czech sound; it is difficult for many learners and does not have a perfect English equivalent

If you cannot say ř yet, an approximate rzh sound is a reasonable beginner target.

The dictionary form is potřebovat = to need.

Potřebuji is the I-form of that verb.

A few present-tense forms:

• (já) potřebuji = I need
• (ty) potřebuješ = you need
• (on/ona) potřebuje = he/she needs
• (my) potřebujeme = we need
• (vy) potřebujete = you need
• (oni) potřebují = they need

Yes. Potřebuju pomoc is very common in everyday spoken Czech.

You will hear both:

• Potřebuji pomoc — a bit more standard/written/careful
• Potřebuju pomoc — very common in speech, more colloquial

Both are correct and natural. As a learner, it is good to recognize both forms.

Yes, Czech word order is more flexible than English.

The neutral order is:

• Potřebuji pomoc.

But you may also hear:

• Pomoc potřebuji.

That changed order can sound marked, emphasizing help.

So:

• Potřebuji pomoc. = neutral
• Pomoc potřebuji. = more emphasis on help

For beginners, the neutral order is the safest choice.

Not exactly.

• Pomoc! = Help! as a cry or shout
• Potřebuji pomoc. = I need help.

So if there is an emergency and you want to call out loudly, Pomoc! is the usual word.

If you are simply telling someone that you need assistance, Potřebuji pomoc. is appropriate.

It is neutral.

It can be used:

• in everyday conversation
• with strangers
• in more serious situations
• in writing

If you want a more conversational spoken version, Potřebuju pomoc is slightly more informal, but still perfectly normal.

No. Czech has no articles like English a/an/the.

So pomoc can mean:

• help
• some help
• the help

The exact meaning depends on context, not on an article.

That is why Potřebuji pomoc. is complete without any extra word.

That mark is called a háček. It changes the pronunciation of the letter.

• r and ř are different sounds in Czech
• ř is a special Czech consonant and is one of the trickier sounds for learners

The spelling matters, because Czech spelling is quite systematic. Even if your pronunciation is not perfect yet, you should learn to recognize ř as its own letter sound.

Usually, if you want to say I need help, the normal expression is:

• Potřebuji pomoc.

Using pomoci here would not be the standard way to express this basic sentence. For learners, it is best to stick with pomoc after potřebovat in this meaning.

So the simple, natural pattern to remember is:

• potřebovat + pomoc = to need help