Nós vamos estudar juntos hoje à noite.

In Portuguese, the subject pronoun is often optional because the verb ending already tells you who the subject is.

So both of these are correct:

• Nós vamos estudar juntos hoje à noite.
• Vamos estudar juntos hoje à noite.

Including nós can make the sentence clearer, more explicit, or slightly more emphatic.

In everyday Brazilian Portuguese, you will also very often hear:

• A gente vai estudar junto hoje à noite.

That also means we are going to study together tonight, but it is more conversational.

Vamos estudar is a very common way to talk about the future in Brazilian Portuguese. It is the structure:

• ir
  • infinitive

Here:

• vamos = we go / we are going
• estudar = to study

Together, vamos estudar means we are going to study.

Portuguese also has a simple future form:

• estudaremos

So this sentence could also be:

• Nós estudaremos juntos hoje à noite.

That is correct, but in spoken Brazilian Portuguese, vamos estudar is usually more natural and common.

Historically, yes, it comes from the verb ir (to go) plus an infinitive. But in modern Portuguese, this structure usually just expresses future meaning, like English going to.

So in this sentence, vamos estudar should be understood as:

• we are going to study

not necessarily as physical movement.

If you want to express actual movement somewhere in order to study, context would make that clear.

Because juntos agrees with the people being described.

Here, juntos refers to nós (we), which is plural, so the adjective also becomes plural:

• singular masculine/general: junto
• singular feminine: junta
• plural masculine/mixed: juntos
• plural feminine: juntas

Since nós usually takes the masculine plural form when the group is mixed or unspecified, juntos is the normal choice.

If the group were entirely female, you could say:

• Nós vamos estudar juntas hoje à noite.

Sometimes in informal Brazilian Portuguese, people do say junto in expressions like:

• A gente vai estudar junto.
• Vamos junto.

This is very common in speech.

However, in more careful standard grammar, with nós, the agreeing form is:

• juntos

So for a learner, Nós vamos estudar juntos hoje à noite is the safest standard form.

Hoje à noite means tonight.

It is made of:

• hoje = today
• à noite = at night / in the evening

Together, the phrase points to this night, which English usually expresses as tonight.

Compare:

• Hoje à noite vamos estudar. = Tonight we’re going to study.
• À noite eu estudo. = I study at night.

So hoje à noite is specific to tonight, while à noite by itself can mean at night more generally.

The à has a grave accent because it is a crase, a contraction of two a sounds.

In expressions like à noite, Portuguese uses this fixed form. It is something learners often just memorize as part of common time expressions.

Useful ones to remember:

• de manhã = in the morning
• à tarde = in the afternoon
• à noite = in the evening / at night

So in this sentence, hoje à noite is the natural standard expression for tonight.

Yes. Portuguese word order is flexible, and this sentence can be rearranged without changing the basic meaning.

For example:

• Nós vamos estudar juntos hoje à noite.
• Hoje à noite, nós vamos estudar juntos.
• Nós vamos estudar hoje à noite juntos.

The most natural versions are usually the first two. Putting hoje à noite at the beginning often adds focus to the time:

• Hoje à noite, nós vamos estudar juntos.

That sounds like Tonight, we’re going to study together.

Because juntos describes how the action happens: together.

In Portuguese, words like this often come after the verb or verb phrase, so:

• vamos estudar juntos

is very natural.

It is similar to English word order in study together.

You may sometimes hear different placements depending on rhythm or emphasis, but estudar juntos is the most straightforward and natural choice here.

Yes, very commonly in Brazilian Portuguese.

A very natural spoken version is:

• A gente vai estudar junto hoje à noite.

Important difference:

• a gente means we
• but it uses third-person singular verb forms

So:

• nós vamos
• a gente vai

Both are correct, but a gente is often more common in everyday conversation in Brazil.

Because after ir used for future meaning, Portuguese normally uses the infinitive.

Pattern:

• ir + infinitive

Examples:

• vou estudar = I am going to study
• vai estudar = he/she is going to study
• vamos estudar = we are going to study

So estudar stays in the infinitive because vamos is the verb that is conjugated.

A rough pronunciation guide is:

• Nós vamos estudar juntos hoje à noite
• roughly: noz VAH-mooz es-too-DAR ZHOON-toos OH-zhee ah NOY-chee

A few helpful notes:

• nós sounds like noz
• vamos often sounds like VAH-mooz
• estudar has stress on the last syllable: dar
• j in juntos sounds like the s in measure
• hoje starts with the same kind of zh sound
• noite is roughly NOY-chee in many Brazilian accents

Pronunciation varies across Brazil, but this will get you close.

Yes, absolutely.

That sentence uses the simple future:

• estudaremos = we will study

So:

• Nós estudaremos juntos hoje à noite.

means the same thing.

The difference is mostly style and frequency:

• nós vamos estudar = more common in everyday spoken Brazilian Portuguese
• nós estudaremos = a bit more formal, written, or deliberate

• hoje à noite = tonight
• à noite = at night / in the evening

Examples:

• Nós vamos estudar hoje à noite. = We’re going to study tonight.
• Nós estudamos à noite. = We study at night.

So adding hoje makes the time specific.

Yes. It is completely natural and correct.

A native speaker might also say:

• Vamos estudar juntos hoje à noite.
• Hoje à noite, vamos estudar juntos.
• A gente vai estudar junto hoje à noite.

But the original sentence is a very good standard model for learners:

• Nós vamos estudar juntos hoje à noite.