Am Wochenende backt meine Tante einen Kuchen mit Pfirsichen, und danach essen wir Melone.

Am is the contraction of an dem.

In time expressions, German often uses an + the dative case, so:

• an dem Wochenende → am Wochenende

Idiomatic English is on the weekend or at the weekend. It does not sound literal in German; it is just the normal way to say it.

This is because German follows the verb-second rule in main clauses.

The first position in the sentence is taken by Am Wochenende, so the conjugated verb must come next:

• Am Wochenende backt meine Tante ...

If the subject came first, you would get:

• Meine Tante backt am Wochenende ...

Both are grammatical, but the original sentence puts the time expression first for emphasis or flow.

Yes, it is in the present tense:

• backt
• essen

German often uses the present tense where English might use will or another future form. So this sentence can mean either:

• a habitual action, or
• something planned for an upcoming weekend

The exact meaning depends on context.

Those forms show different grammatical roles.

• meine Tante is the subject, so it is in the nominative
• einen Kuchen is the direct object, so it is in the accusative

Also, the nouns have different genders:

• die Tante → feminine
• der Kuchen → masculine

So the forms are:

• meine Tante = feminine nominative
• einen Kuchen = masculine accusative

Because Kuchen is masculine and it is the direct object of backt.

The indefinite article changes like this:

• nominative masculine: ein Kuchen
• accusative masculine: einen Kuchen

So einen is there because the cake is the thing being baked.

Because mit always takes the dative case.

The basic plural is:

• die Pfirsiche

But in the dative plural, German usually adds -n if possible:

• mit Pfirsichen

So:

• mit
  • dative
• plural dative of Pfirsiche = Pfirsichen

Danach means after that or afterwards.

Yes, it affects word order in the same way as Am Wochenende. Since danach takes the first position in the clause, the verb must come second:

• danach essen wir Melone

If you started with the subject instead, you would say:

• wir essen danach Melone

Both are correct, but the original sentence highlights the sequence of events.

In German, when two main clauses are joined by und, the comma is often optional.

So both of these can be acceptable:

• ..., und danach essen wir Melone.
• ... und danach essen wir Melone.

Writers sometimes include the comma to make the sentence structure clearer or easier to read.

Here, Melone is being used in a general food sense, like we eat melon.

Using no article can make it sound like the food itself is meant, not one whole countable item. Compare:

• Wir essen Melone. = We eat melon.
• Wir essen eine Melone. = We eat one melon / a whole melon.

So the version without the article is natural if the idea is simply that melon is what you eat afterwards.

Yes, backt is correct.

In the 3rd person singular present tense, both forms are accepted:

• er/sie backt
• er/sie bäckt

In modern standard German, backt is very common and sounds completely normal here.

Because am Wochenende is an idiomatic time expression meaning on the weekend / at the weekend.

German often uses the singular for this kind of expression. It does not necessarily mean only one single weekend in a strict sense; context tells you whether it is:

• a specific weekend, or
• a general/habitual idea

If you want to make every weekend very explicit, you can say:

• jedes Wochenende