Wir feiern Ostern mit der Familie.

In German, feiern often takes the name of a holiday directly as its object:

• Wir feiern Ostern.
• Sie feiern Weihnachten.

This is similar to saying We celebrate Easter in English.

You can also hear expressions with a preposition in other contexts, but with feiern, using the holiday directly is the most natural pattern here.

Holiday names in German are often used without an article, especially in general statements:

• Ostern
• Weihnachten
• Pfingsten

So Wir feiern Ostern is the normal way to say it.

An article may appear in some special contexts or regional usage, but learners should treat Ostern without an article as the standard form here.

Der Familie is in the dative case because it follows the preposition mit.

The preposition mit always takes the dative:

• mit der Familie
• mit dem Freund
• mit den Kindern

So:

• die Familie = nominative
• der Familie = dative

Because mit requires the dative, not the accusative.

The feminine definite article changes like this:

• die Familie = nominative / accusative
• der Familie = dative

So after mit, you must say:

• mit der Familie

not

• mit die Familie

Literally, it means with the family, but in natural use it often means with the family in a familiar sense, such as with our family or with the family generally, depending on context.

German often uses the definite article where English might prefer a possessive:

• Ich fahre mit dem Auto. = I’m going by car / with the car
• Wir feiern mit der Familie. = We celebrate with the family / with our family

If the speaker wanted to be more explicit, they could say:

• mit unserer Familie = with our family

German main clauses usually follow the V2 rule: the finite verb comes in the second position.

Here the sentence is:

• Wir | feiern | Ostern mit der Familie

So:

1. Wir = first position
2. feiern = second position

This is standard German word order in a normal statement.

Yes. In this sentence, Ostern is the thing being celebrated, so it functions as the direct object of feiern.

Structure:

• Wir = subject
• feiern = verb
• Ostern = direct object
• mit der Familie = prepositional phrase

Yes, that is grammatically possible, but Wir feiern Ostern mit der Familie is the more neutral and natural order in many contexts.

German word order is flexible, especially with adverbial and prepositional phrases. Changing the order can shift emphasis:

• Wir feiern Ostern mit der Familie.
  Neutral: we celebrate Easter with the family.

• Wir feiern mit der Familie Ostern.
  Slightly more emphasis on mit der Familie.

For learners, the original version is a very good default.

Because Familie is a noun, and all nouns in German are capitalized.

So in this sentence:

• Wir = pronoun, not capitalized because it is at the start for normal sentence reasons
• feiern = verb, not capitalized
• Ostern = noun / holiday name, capitalized
• Familie = noun, capitalized

Very often, yes. Feiern commonly means to celebrate:

• einen Geburtstag feiern = to celebrate a birthday
• Weihnachten feiern = to celebrate Christmas
• Ostern feiern = to celebrate Easter

But feiern can also mean to party in some contexts, especially in informal speech:

• Wir feiern heute Abend. = We’re partying tonight.

In your sentence, it clearly means celebrate, not party.

Yes. Ostern can refer to Easter as the holiday, and depending on context, it can also refer more broadly to the Easter time/season.

For example:

• An Ostern besuchen wir meine Eltern. = At Easter, we visit my parents.
• Wir feiern Ostern mit der Familie. = We celebrate Easter with the family.

So learners should understand it as the holiday name first, while allowing context to determine how broad the time reference is.

Not in the same structure.

You use Ostern directly after feiern because it is the object:

• Wir feiern Ostern.

If you use zu Ostern or an Ostern, then you are talking about time rather than the thing being celebrated:

• Zu Ostern fahren wir nach Berlin. = At Easter, we’re going to Berlin.
• An Ostern bleiben wir zu Hause. = At Easter, we’re staying home.

So:

• feiern Ostern = celebrate Easter
• zu/an Ostern = at Easter

You would say:

• Ich feiere Ostern mit der Familie.

The only main change is the verb form:

• wir feiern = we celebrate
• ich feiere = I celebrate

Everything else can stay the same.