Després de la classe, et presentaré la meva amiga.

It means after class or more literally after the class.

• després = after / afterwards
• de = of / from, but here it is part of the expression després de = after
• la classe = the class

So the whole phrase sets the time: After class, ...

Because després normally goes with de when it is followed by a noun or phrase.

So Catalan says:

• després de la classe = after class
• després de dinar = after lunch
• després d’això = after that

This is just the standard pattern in Catalan: després de + noun / phrase.

Et means to you here.

In this sentence, the speaker is saying that they will introduce their friend to you:

• et = to you
• presentaré = I will introduce
• la meva amiga = my friend

So et presentaré la meva amiga means I will introduce my friend to you.

In standard Catalan, the unstressed pronoun for you before a consonant is et, not te.

So:

• et presentaré = I will introduce ... to you
• et veig = I see you

Before a vowel or silent h, it often becomes t’:

• t’ajudaré = I will help you

A Spanish speaker might expect te, but Catalan normally uses et.

Presentaré is the future tense, first person singular.

It comes from the verb presentar = to introduce / to present.

So:

• presentaré = I will introduce

The ending -é marks the future for jo:

• jo presentaré = I will introduce
• tu presentaràs = you will introduce
• ell/ella presentarà = he/she will introduce

Because Catalan often uses the definite article with possessives.

So Catalan commonly says:

• la meva amiga = my friend
• el meu germà = my brother
• la seva casa = his/her house

This is different from English, where you normally say just my friend, not the my friend.

In Catalan, the article is completely normal here.

Yes. Amiga is feminine, so it tells you the friend is a woman or girl.

Compare:

• amic = male friend
• amiga = female friend

So la meva amiga means my female friend.

English my friend does not usually show gender, but Catalan does.

It is informal singular, because of et, which refers to you when speaking to one person informally.

If you wanted to be formal, you would usually say:

• Després de la classe, li presentaré la meva amiga.

Here:

• et = to you, informal singular
• li = to you, formal singular, or to him/her depending on context

If you were speaking to more than one person, you could use:

• us presentaré la meva amiga = I will introduce my friend to you all

The comma separates the opening time expression from the main sentence.

So:

• Després de la classe, = After class,
• et presentaré la meva amiga. = I will introduce my friend to you.

This is similar to English, where you often write:

• After class, I’ll introduce you to my friend.

The comma helps mark the introductory phrase clearly.

Yes, in many contexts you can, but there is a small difference in feel.

• després de la classe = after the class, referring to a specific class
• després de classe = after class, more general or routine

Both are natural, but de la classe sounds a bit more specific.

The basic structure is:

• Després de la classe = time expression
• et = to you
• presentaré = I will introduce
• la meva amiga = my friend

So literally it is something like:

After class, to you I-will-introduce my friend.

Catalan often places these short object pronouns like et before the conjugated verb. That is why et comes before presentaré.