Posa el pegat exactament allà.

Posa is the informal singular imperative of posar (to put / to place).

So in this sentence, it means you are giving a command to one person:

• (Tu) posa... = Put...

A useful thing to know is that posa can also be the third-person singular present (he/she puts), but in this sentence the context shows it is a command.

Yes. Catalan often leaves out subject pronouns when they are understood from the verb form.

So:

• Posa el pegat exactament allà.
• Tu posa el pegat exactament allà.

Both mean the same thing, but the version without tu is more natural unless you want emphasis, contrast, or clarity.

Because el is the definite article (the), and Catalan normally uses it when talking about a specific object.

• el pegat = the patch / the sticker / the bandage, depending on context

Also, pegat is a masculine singular noun, so the article is el.

If it were plural, it would be:

• els pegats = the patches

Pegat literally refers to something that is stuck on or used as a patch. Depending on context, it can mean things like:

• patch
• sticker
• sometimes bandage / plaster, in the right situation

So the exact English word depends on what the speaker is talking about. The Catalan noun itself is broader than a single English equivalent.

Because exactament is modifying allà.

• allà = there
• exactament allà = exactly there

This is the most natural order if you want to specify the location very precisely.

You can think of it as:

• Put the patch [exactly there].

Catalan often places an adverb like exactament directly before the word or phrase it is emphasizing.

Both usually mean there, and in many situations they are interchangeable.

Very broadly:

• allà often feels a bit more like over there / there
• allí can sound slightly more specific or pinpointed in some varieties

But this depends a lot on region and speaker. In everyday Catalan, the difference is often small, and learners will hear both.

The stress is on the last syllable because of the accent:

• allà = roughly a-LYA

A few pronunciation notes:

• à shows that the final syllable is stressed
• ll in Catalan is traditionally a palatal sound, something like ly in million for many English speakers

So a learner-friendly approximation is:

• allà ≈ ah-LYA

The grave accent in allà shows that the word is stressed on the final syllable.

Without getting too deep into spelling rules, the accent helps tell you how to pronounce it:

• allà → stress at the end

In Catalan, accent marks are very important because they often show:

• where the stress falls
• sometimes the quality of the vowel

Yes, but Posa el pegat exactament allà is the most straightforward and natural version.

Catalan word order is fairly flexible, but changing it can change the emphasis. For example:

• Posa exactament allà el pegat is possible, but it sounds more marked and less neutral
• El pegat, posa’l exactament allà gives special emphasis to the patch

So the original sentence is a very normal, neutral way to say it.

The rest of the sentence stays the same, but the verb changes.

• Posa el pegat exactament allà. = informal singular (you, one person)
• Posi el pegat exactament allà. = formal singular
• Poseu el pegat exactament allà. = informal plural (you all)
• Posin el pegat exactament allà. = formal plural

So the main thing that changes is the command form of posar.

Negative commands in Catalan do not use the same form as the positive imperative.

So:

• positive: Posa el pegat exactament allà.
• negative: No posis el pegat exactament allà.

This is very important in Catalan:

• positive command → imperative form
• negative command → present subjunctive form

That is why posa becomes no posis.