Ela vai conosco.

Vai is the 3rd person singular present indicative form of the verb ir (to go).

So it matches ela:

• eu vou
• você / ele / ela vai
• nós vamos

In this sentence, vai is the main verb: she goes / is going.

It can feel like either one in English, depending on context.

In Portuguese, the present tense is often used for:

• a current action
• a planned action
• a near-future action

So Ela vai conosco can naturally mean something like:

• She is going with us
• She’ll go with us

Context tells you which one is intended.

It is the same verb, ir, but it is being used differently.

• In Ela vai conosco, vai is the main verb: she goes.
• In Ela vai fazer, vai works like an auxiliary in the structure ir + infinitive, meaning is going to do.

So:

• Ela vai conosco = she goes/is going with us
• Ela vai viajar = she is going to travel

Yes. Portuguese often allows the subject pronoun to be omitted when the meaning is clear from context.

So both are possible:

• Ela vai conosco.
• Vai conosco.

However, keeping ela can help with:

• clarity
• emphasis
• contrast

For example, if you are distinguishing her from someone else, ela is useful.

Because after the preposition com (with), Portuguese has some special combined forms:

• com + mim = comigo
• com + ti = contigo
• com + si = consigo
• com + nós = conosco
• com + vós = convosco

So conosco is the standard combined form meaning with us.

That is why Ela vai conosco sounds natural and standard.

Sometimes, but not as the usual neutral choice.

In standard Portuguese, when there is no extra modifier, conosco is preferred.

So the normal form is:

• Ela vai conosco.

You may hear or use com nós in some situations, especially:

• in colloquial speech
• when nós is modified

For example:

• Ela vai com nós dois. = she’s going with the two of us

But in a simple sentence like this one, conosco is the best standard form.

Yes, it is completely correct and natural, especially in:

• writing
• careful speech
• neutral standard Portuguese

That said, in everyday Brazilian conversation, many people often prefer:

• com a gente

So a very common spoken version would be:

• Ela vai com a gente.

Both are correct, but they feel a little different in register:

• conosco = more standard / slightly more formal
• com a gente = very common and conversational in Brazil

Both can mean with us, but they are used a bit differently.

• conosco is the direct equivalent of with us
• com a gente is very common in Brazilian Portuguese and often sounds more conversational

Examples:

• Ela vai conosco. = standard, neutral
• Ela vai com a gente. = very natural in everyday Brazil

A learner should understand both, and it is useful to know that com a gente is extremely common in speech.

Because this is the most neutral word order in Portuguese:

• subject
  • verb
    • complement

So:

• Ela = subject
• vai = verb
• conosco = prepositional complement

Other word orders are possible for emphasis, but this one is the plain, natural order.

For example:

• Conosco, ela vai. sounds marked or contrastive, not the default everyday order.

Vai is pronounced roughly like the English word vie.

A simple guide:

• v as in very
• ai sounding like eye

So:

• vai ≈ v-eye

A simple pronunciation guide is:

co-NOSS-co

More approximately in Brazilian Portuguese:

• co = like co in coffee, but shorter
• noss = stressed part, like noss
• co = short co

The stress falls on nos:

• co-NOS-co

Usually, yes, in a sentence like this.

Ela means she, so it normally refers to:

• a female person
• sometimes a female animal
• sometimes a feminine noun, depending on context

But in everyday conversation, learners will most often see ela used for she.

Yes, it could, depending on context.

The present tense in Portuguese can express:

• what is happening now
• what regularly happens
• what is planned to happen

So Ela vai conosco could mean a habitual action if the context supports it.

For example:

• Ela vai conosco todo sábado. = She goes with us every Saturday.

Without extra context, many people may understand it as a current or planned action.

Yes, but it sounds more formal or written.

• Ela vai conosco = normal, natural, very common
• Ela irá conosco = future tense, more formal

In everyday Brazilian Portuguese, speakers usually prefer vai rather than irá in ordinary conversation.

Because ir is a highly irregular verb.

Its forms do not follow the regular pattern that many verbs do. Some present-tense forms are:

• eu vou
• você / ele / ela vai
• nós vamos
• vocês / eles / elas vão

So even though vai looks very different from ir, it is the correct conjugated form.

No. Ele and ela both take the same verb form in the present tense.

So:

• Ela vai conosco.
• Ele vai conosco.

Both use vai because both are 3rd person singular.