Идите с нами в парк.

Идите is the imperative form of идти (to go / to walk).

In this sentence, it means go! / come! when speaking to:

• more than one person (you all), or
• one person formally (you, polite)

So Идите с нами в парк means something like:

• Come with us to the park
• Go with us to the park

Russian uses the same form идите for both plural and formal singular commands.

Both are imperative forms of идти:

• иди = say it to one person informally
• идите = say it to several people or to one person formally

Examples:

• Иди с нами в парк. = Come with us to the park. (to one friend)
• Идите с нами в парк. = Come with us to the park. (to a group, or politely to one person)

After the preposition с meaning with, Russian usually uses the instrumental case.

The pronoun мы (we) changes like this:

• мы = we
• нас = us
• нами = with us / by us (instrumental form)

So:

• с нами = with us

This is a very common pattern:

• с ним = with him
• с ней = with her
• с вами = with you
• с ними = with them

Because this sentence shows direction toward a place, not location.

Russian often uses:

• в + accusative = into / to a place (motion toward)
• в + prepositional = in / inside a place (location)

So:

• в парк = to the park / into the park → movement
• в парке = in the park → location

Compare:

• Идите в парк. = Go to the park.
• Мы в парке. = We are in the park.

Because парк is an inanimate masculine noun, and in the singular accusative, many inanimate masculine nouns look exactly like the nominative form.

So:

• nominative: парк
• accusative: парк

Even though the form looks the same, its role in the sentence is different.

This happens a lot:

• в музей = to the museum
• в магазин = to the store
• в лес = to the forest

Literally, идти is the verb for going on foot. So идите most basically means walk / go on foot.

But in many everyday situations, English translates it more naturally as:

• go
• come

So Идите с нами в парк is very naturally translated as:

• Come with us to the park

Even though the Russian verb is based on the idea of going on foot, English usually chooses the most natural wording rather than translating it word-for-word.

Russian often uses a motion verb where English may choose either go or come, depending on perspective.

If the speaker is inviting someone to join them, English often prefers:

• Come with us

So Идите с нами в парк can be understood as:

• Go with us to the park
• Come with us to the park

Both are possible, but come with us is often the most natural English translation in an invitation.

Yes, Пойдите с нами в парк is possible.

The difference is aspect and nuance:

• идите from идти (imperfective) often sounds like be going / go
• пойдите from пойти (perfective) often focuses more on setting off or starting to go

In many contexts, both can work as an invitation, but идите с нами is a very common and natural everyday way to say come with us.

A learner can safely treat идите с нами в парк as a standard invitation.

The neutral word order is:

Идите с нами в парк.

But Russian word order is flexible, and moving words can change emphasis.

For example:

• Идите с нами в парк. = neutral
• С нами идите в парк. = emphasizes with us
• В парк идите с нами. = emphasizes to the park

Even when the order changes, the cases help show the meaning:

• с нами still means with us
• в парк still means to the park

The stress is:

Иди́те с на́ми в парк.

A rough pronunciation guide:

• Иди́те = ee-DEE-tye
• с на́ми = s NAH-mee
• в парк = f park

A few pronunciation notes:

• с may sound closer to z before voiced sounds, but here it stays close to s
• в before п is often pronounced more like f, so в парк can sound like ф парк
• Unstressed vowels are reduced in normal speech, especially in идите

Grammatically, it is an imperative, so yes, it is technically a command form. But in real use, it can sound like:

• a command
• an invitation
• an encouragement

Depending on tone, Идите с нами в парк can mean:

• Come with us to the park
• Do come with us to the park
• Go with us to the park

Because идите is also the formal imperative, it can sound polite when said respectfully.

Russian has no articles like a or the.

So парк can mean:

• a park
• the park

The exact meaning depends on context.

In this sentence, в парк is usually understood from the situation:

• maybe to the park
• maybe to the park we both know about

Russian leaves that to context instead of using articles.