Porta el passaport a la bossa i no oblidis la maleta.

Here porta is the verb portar (to carry / to bring / to take) in the informal singular imperative: Porta... = Bring/Take/Carry...

So:

• Porta el passaport... = Bring/Take the passport...

It is true that porta can also be a noun meaning door, but in this sentence the structure clearly shows it is a verb, because it is followed by a direct object: el passaport.

A useful detail: the imperative form for tu often looks the same as the 3rd person singular present:

• ell/ella porta = he/she carries
• porta! = carry! / bring!

The meaning depends on context.

Because in Catalan, negative commands are normally formed with the present subjunctive, not the affirmative imperative form.

So:

• oblida! = forget! (affirmative command, informal singular)
• no oblidis! = don’t forget! (negative command, informal singular)

This is very important in Catalan and works like this with many verbs:

• Parla! = Speak!

• No parlis! = Don’t speak!

• Menja! = Eat!
• No mengis! = Don’t eat!

So in your sentence:

• no oblidis la maleta = don’t forget the suitcase

Catalan uses the definite article (el, la, els, les) more often than English does.

In English, especially in short instructions, you might say:

• Bring passport
• Don’t forget suitcase

But Catalan normally prefers:

• Porta el passaport
• No oblidis la maleta

So the articles here are completely natural and standard. In English they may sound more optional in some contexts, but in Catalan they are usually expected.

They are two different kinds of containers:

• bossa = bag
• maleta = suitcase

Depending on context, bossa might mean a general bag, a handbag, a shopping bag, or a purse-type bag.
Maleta is more specifically luggage or a suitcase.

So the sentence contrasts two different objects:

• put/take the passport to/into the bag
• don’t forget the suitcase

This is a very natural question, because English usually distinguishes clearly between to and in/into.

In Catalan:

• a often indicates direction or destination: to
• en often indicates location: in

So:

• a la bossa can suggest movement to / into the bag
• a la bossa is very natural after a verb of placing or taking something somewhere

A learner might expect a la bossa to mean only to the bag, but in real usage Catalan often uses a where English would say in or into, especially with movement.

So in this sentence, a la bossa is best understood as something like:

• into the bag
• in the bag

depending on the context and the translation you were given.

You only need a pronoun if you are replacing the noun.

In the sentence, the object is stated explicitly:

• no oblidis la maleta = don’t forget the suitcase

Since la maleta is already there, no object pronoun is needed.

If you wanted to replace la maleta with a pronoun, then you would use one:

• No l’oblidis. = Don’t forget it.

So:

• full noun: No oblidis la maleta
• pronoun: No l’oblidis

It is addressed to one person informally, using tu.

You can tell this from the forms:

• porta
• no oblidis

These are the forms used when speaking casually to one person.

For comparison:

• tu: Porta... / no oblidis...
• vostè (formal singular): Porti... / no oblidi...
• vosaltres (informal plural): Porteu... / no oblideu...
• vostès (formal plural): Portin... / no oblidin...

So this sentence sounds like someone giving instructions to a friend, family member, child, or someone they address informally.

It depends on context. Portar is a broad verb and can correspond to several English verbs:

• bring
• take
• carry
• sometimes even wear in other contexts

In this sentence, the most natural English choice depends on the situation:

• If the speaker wants the person to move the passport with them, take or bring may fit.
• If the focus is physically putting it somewhere, put might even sound more natural in English translation, depending on context.

So portar is a flexible verb, and its best English equivalent is decided by the situation rather than by a single fixed translation.

Yes, very similarly. Oblidar usually takes a direct object:

• oblidar el passaport = to forget the passport
• oblidar la maleta = to forget the suitcase

That is why the sentence says:

• no oblidis la maleta

There is no extra word like de here. You are directly forgetting the suitcase.

Catalan can also use related structures in other contexts, but in a sentence like this, it works very much like English forget + object.

Yes, depending on the exact intended meaning.

If the idea is specifically put the passport in the bag, many speakers might also say something like:

• Posa el passaport a la bossa.
• Posa el passaport dins la bossa.

If the idea is more take the passport with you in the bag, then Porta el passaport a la bossa can make sense.

So the original sentence is understandable, but the most natural choice can depend on whether the speaker means:

• put it into the bag
• carry it in the bag
• take it along in the bag

That kind of small nuance is very common in real Catalan.