Você deve dormir cedo hoje.

In Você deve dormir cedo hoje, deve usually means should or ought to.

The verb dever can express:

• obligation: must / have to
• advice: should / ought to
• sometimes even probability in other contexts

In this sentence, without extra emphasis, it sounds most like advice or a mild obligation: You should sleep early today.

If you wanted a stronger sense like you have to, Brazilian Portuguese often uses ter que or precisar:

• Você tem que dormir cedo hoje.
• Você precisa dormir cedo hoje.

Because Portuguese, like English, often uses a conjugated verb + infinitive structure.

Here:

• deve = conjugated form of dever
• dormir = infinitive

So the pattern is:

subject + dever + infinitive

Examples:

• Você deve estudar. = You should study.
• Ela deve sair cedo. = She should leave early.

Only the first verb is conjugated. The second verb stays in the infinitive.

Yes, it can be omitted.

Portuguese often drops subject pronouns when the meaning is clear from context. So all of these are possible:

• Você deve dormir cedo hoje.
• Deve dormir cedo hoje.

However, with você, speakers often include the pronoun more often than with some other subjects, especially in Brazilian Portuguese, because the verb form can be less distinctive.

Including você can:

• make the sentence clearer
• add emphasis
• sound more direct

So Você deve dormir cedo hoje is completely natural.

In Brazilian Portuguese, você takes third-person singular verb forms.

So:

• você deve
• você dorme
• você precisa

This is one of the first things English speakers need to get used to. Even though você means you, grammatically it behaves like he/she for verb conjugation.

Compare:

• tu deves = you should
• você deve = you should

In much of Brazil, você deve is the more common everyday form.

Here, cedo is an adverb, meaning early.

It modifies the verb dormir:

• dormir cedo = to sleep early / to go to sleep early

This is different from using early as an adjective in English, like an early train. In this sentence, cedo is not describing a noun; it is describing when the action happens.

Examples:

• Acordei cedo. = I woke up early.
• Ela chegou cedo. = She arrived early.

Yes, the word order can change.

Você deve dormir cedo hoje is natural and clear. But Portuguese has some flexibility with adverbs like cedo and hoje.

You may also hear:

• Você deve dormir hoje cedo.
• Hoje você deve dormir cedo.

The exact placement can slightly change the focus:

• ... cedo hoje emphasizes the recommendation as applying today
• Hoje você deve... puts today in focus right away

For a learner, the original sentence is a very safe and natural order.

Yes, there can be a small difference.

• dormir cedo = to sleep early
• ir dormir cedo = to go to bed / go to sleep early

In everyday use, both can often point to the same general idea, but ir dormir makes the idea of going to bed a bit more explicit.

Examples:

• Você deve dormir cedo hoje. = You should sleep early today.
• Você deve ir dormir cedo hoje. = You should go to bed early today.

A rough English-friendly pronunciation is:

vo-SEH DEH-vee dor-MEER SEH-do OH-zhee

A few notes:

• Você: stress on the last syllable: vo-SEH
• deve: often sounds like DEH-vee
• dormir: stress on -mir
• cedo: stress on CE-
• hoje: the j sounds like the s in measure

In connected Brazilian speech, it may sound smoother and less fully pronounced than this guide suggests.

It depends on context and tone.

Você deve dormir cedo hoje can sound like:

• advice
• a recommendation
• an instruction

If spoken gently, it is perfectly normal. But if you want to sound softer or more caring, Brazilian Portuguese often uses other phrasing, such as:

• É melhor você dormir cedo hoje. = It’s better if you sleep early today.
• Acho que você deveria dormir cedo hoje. = I think you should sleep early today.

So the original sentence is not rude by itself, but tone matters.

Deve is more direct.
Deveria is softer and more conditional.

Compare:

• Você deve dormir cedo hoje. = You should sleep early today.
• Você deveria dormir cedo hoje. = You should sleep early today / You really ought to sleep early today.

In English, both can translate as should, but in Portuguese:

• deve can sound firmer
• deveria often sounds more polite, tentative, or less forceful

Yes, but it depends on the region.

In parts of Brazil, especially in the South and some other areas, tu is used. Then the sentence would be:

• Tu deves dormir cedo hoje.

However, in much of Brazil, você is more common:

• Você deve dormir cedo hoje.

You may also hear mixed usage in some regions, where people say tu but use a verb form associated with você. That is common in real speech, though learners are usually first taught the standard patterns.

Because dever normally connects directly to an infinitive.

So the structure is:

• dever + infinitive

Examples:

• deve estudar
• deve sair
• deve dormir

You do not normally say:

• deve de dormir for this meaning of obligation/advice

Very advanced note: dever de + infinitive can appear in some varieties or in more formal/literary usage with a nuance of probability, but that is not the normal pattern for a beginner sentence like this one. Here, the correct basic structure is simply deve dormir.