O catador chegou cedo.

O is the masculine singular definite article, equivalent to the.

In Portuguese, articles are used very often before nouns, even in places where English might sometimes leave them out. In this sentence, o catador sounds natural and refers to a specific person or a person understood in the context.

If you changed the gender, you would also change the article:

• o catador = masculine
• a catadora = feminine

Catador comes from the verb catar, which means to pick up, gather, collect, or sort through things.

So catador is a person who collects or picks things. In Brazil, it often refers to someone who collects recyclable materials or reusable items, depending on context. The most natural English equivalent can change with the situation: collector, picker, recycler, or even trash picker in some contexts.

So it is a context-dependent noun, not a one-size-fits-all word.

You know it is masculine because of the article o and the noun form catador.

The feminine form is usually catadora:

• O catador chegou cedo.
• A catadora chegou cedo.

The verb does not change for gender here:

• chegou works with both o catador and a catadora

Chegou is the third-person singular preterite form of chegar.

That means:

• third person singular because the subject is o catador = he / the collector
• preterite because the sentence describes a completed action in the past

So chegou means that the arriving happened and is viewed as a finished event.

A few related forms:

• chega = arrives / is arriving
• chegava = used to arrive / was arriving
• chegará = will arrive

Because Portuguese usually builds the past tense directly into the verb itself.

English often needs an extra helping word in questions or emphasis, such as did, but Portuguese does not need that in a normal statement:

• English: He arrived early
• Portuguese: Chegou cedo

The ending in chegou already tells you it is a completed action in the past.

Here, cedo is an adverb, meaning early.

It modifies the verb chegou, telling you when the person arrived.

Important point: as an adverb, cedo does not change form for gender or number.

• O catador chegou cedo.
• A catadora chegou cedo.
• Os catadores chegaram cedo.

In all of those, cedo stays the same.

That is the most neutral and common word order in Portuguese here.

A very natural structure is:

• subject + verb + adverb

So:

• O catador chegou cedo.

Portuguese does allow other orders for emphasis or style, but this version is the straightforward, standard one. Putting cedo after the verb sounds completely normal in Brazilian Portuguese.

A useful approximate pronunciation is:

o ca-ta-DOR che-GOU SE-do

A few details:

• o is often pronounced like oo or a very short oh, depending on region and speech style
• catador has stress on the last syllable: -dor
• ch in chegou sounds like English sh
• chegou has stress on gou
• cedo has stress on the first syllable: CE-do

A rough English-style approximation would be: oo kah-tah-DOR sheh-GOH SEH-doo

That is only approximate, but it helps as a starting point.

Yes, but only if the subject is already clear from context.

Portuguese often allows the subject to be omitted, especially when it is understood:

• Chegou cedo. = [He / she / it] arrived early

However, chegou by itself does not tell you exactly who the subject is, since it could refer to he, she, or even you in some formal contexts. So without context, it is less clear than O catador chegou cedo.

It depends on context.

Grammatically, it is a normal noun. But in real-life Brazilian usage, catador can refer specifically to someone who collects recyclables or discarded materials, so it may carry a social or occupational nuance.

Sometimes you may hear more specific phrases such as:

• catador de recicláveis = recycler / person who collects recyclable materials
• catador de lixo = trash picker / garbage collector, depending on context

So the word itself is not strange, but the exact feeling and best English translation depend a lot on the situation.