Eu deixei a sopa no micro-ondas e o peixe congelado no freezer.

Yes, you can omit eu.

Portuguese often drops subject pronouns when the verb ending already makes the subject clear. Deixei clearly means I left / I put / I kept, so:

• Eu deixei a sopa no micro-ondas...
• Deixei a sopa no micro-ondas...

Both are correct.

Including eu can add emphasis, contrast, or clarity. For example, if you want to stress I did it, not someone else, eu is more likely to appear.

It can suggest all of those depending on context.

Deixar is a very flexible verb. In this sentence, deixei most naturally means something like:

• I left
• I put and left
• I kept

So Eu deixei a sopa no micro-ondas could mean:

• I left the soup in the microwave.
• I put the soup in the microwave and left it there.

Portuguese often uses deixar where English might choose different verbs depending on context.

Portuguese uses definite articles much more often than English.

So where English might say:

• I left soup in the microwave
• I left fish in the freezer

Portuguese commonly says:

• a sopa
• o peixe

This does not necessarily mean the specific soup or the specific fish in the same strong way English does. It is just normal Portuguese usage.

Because no is the contraction of em + o.

• em o → no
• em a → na
• em os → nos
• em as → nas

So:

• no micro-ondas = in the microwave
• no freezer = in the freezer

Using the article is the normal way here. Em micro-ondas without an article would sound unnatural in this sentence.

Good question. The gender is not determined only by the ending.

Micro-ondas is masculine: o micro-ondas.

That is because it comes from forno de micro-ondas or from the idea of micro-ondas as a masculine noun in usage. Even though the word ends in -as, it behaves as masculine.

So you say:

• o micro-ondas
• no micro-ondas

not:

• a micro-ondas
• na micro-ondas

Yes, freezer is very common in Brazilian Portuguese.

In Brazil, people often say:

• freezer
• congelador in some contexts, but much less often in everyday speech

So no freezer sounds natural and common in Brazil.

Depending on the region or the exact appliance, someone might also say:

• no congelador
• na parte do congelador

But freezer is completely normal.

Both are possible. The sentence is using ellipsis, which means leaving out something that is understood.

Full version:

• Eu deixei a sopa no micro-ondas e deixei o peixe congelado no freezer.

Natural shortened version:

• Eu deixei a sopa no micro-ondas e o peixe congelado no freezer.

The second deixei is omitted because it would be repetitive and the meaning is still clear.

English does this too sometimes:

• I left the soup in the microwave and the frozen fish in the freezer.

Here, congelado describes peixe.

So o peixe congelado means:

• the frozen fish

It is an adjective agreeing with peixe, which is masculine singular, so we get congelado.

Compare:

• o peixe congelado = the frozen fish
• a carne congelada = the frozen meat
• os legumes congelados = the frozen vegetables

It is not acting like an extra verb here.

Normally, no.

In everyday Portuguese, congelado usually comes after the noun:

• o peixe congelado
• a comida congelada

Putting it before the noun would sound very unnatural in ordinary speech.

In this sentence, no micro-ondas means in the microwave.

Portuguese uses em for many kinds of location, and with containers or enclosed spaces it often corresponds to English in.

So:

• na geladeira = in the fridge
• no forno = in the oven
• no micro-ondas = in the microwave

If you wanted to say on top of the microwave, you would need something like:

• em cima do micro-ondas

The order in the original sentence is the most neutral and natural.

Portuguese often places things in this order:

• verb
• object
• location

So:

• deixei a sopa no micro-ondas
• (deixei) o peixe congelado no freezer

You can move no freezer earlier for emphasis or style, but the neutral order is the one in the sentence.

Because deixei is the pretérito perfeito form of deixar.

This tense usually expresses a completed action in the past:

• deixei = I left / I put / I kept
• comi = I ate
• falei = I spoke

So the sentence describes something the speaker did and completed in the past.

In standard spelling, yes, it is written with a hyphen: micro-ondas.

Approximate Brazilian pronunciation:

• MEE-kroo ON-jas or MEE-kroh ON-das, depending on accent

A few helpful notes:

• micro sounds roughly like meek-roh
• ondas begins with an o sound like in off, and the d can sound softer in Brazilian speech
• the stress falls on ON: micro-ON-das

The exact pronunciation varies by region, but the hyphenated spelling is standard.

Yes, that is a very natural interpretation.

Because of o peixe congelado no freezer, the sentence suggests the fish was left in the freezer in its frozen state. In normal English, you might translate the whole sentence naturally as:

• I left the soup in the microwave and the frozen fish in the freezer.

So congelado gives extra information about the fish, not just its location.

No. Those would be incorrect because both nouns are treated as masculine in Brazilian Portuguese:

• o micro-ondas → no micro-ondas
• o freezer → no freezer

You use na only with feminine nouns:

• a geladeira → na geladeira
• a cozinha → na cozinha