O saco do lixo rasgou-se, por isso levei tudo ao caixote da rua.

Both are possible, but they can feel slightly different.

• saco de lixo = a trash bag / garbage bag as a type of object
• saco do lixo = literally the bag of the rubbish, often understood as the bag containing the household rubbish

In everyday speech, both can refer to a bin bag. In this sentence, o saco do lixo sounds very natural for the rubbish bag you already have in mind.

Also, do is a contraction:

• de + o = do

So do lixo literally means of the rubbish.

In this sentence, rasgou-se means it tore / it ripped.

The -se here does not usually mean the bag consciously tore itself. Instead, it is a very common Portuguese way to express that something happened to the object without saying who caused it.

So:

• O saco rasgou-se = The bag tore / got torn / ripped
• Rasgou o saco = He/she tore the bag or someone tore the bag

This use of -se is very common in Portuguese.

Because in European Portuguese, in a normal affirmative main clause, object/reflexive pronouns are often attached to the end of the verb. This is called enclisis.

So:

• rasgou-se is the expected European Portuguese pattern

You often get se before the verb only when something triggers it, such as:

• não se rasgou = it didn’t tear
• quando se rasgou = when it tore
• já se rasgou = it has already torn / already tore

For Portugal, rasgou-se is the natural choice here.

They are both in the pretérito perfeito simples, which is the normal tense for completed actions in the past.

• rasgou(-se) = it tore / it ripped
• levei = I took

This tense is used for events seen as finished:

• the bag tore
• then I took everything out

So the sentence describes a sequence of completed past actions.

Because Portuguese often leaves out subject pronouns when the verb ending already makes the subject clear.

• levei already means I took

So:

• levei tudo = I took everything

You could say eu levei tudo, but that usually adds emphasis, contrast, or clarity:

• Eu levei tudo, não foi ele. = I took everything, not him.

Without emphasis, leaving out eu is completely normal.

Yes. Por isso is a very common way to mean:

• so
• therefore
• for that reason
• that’s why

In this sentence:

• O saco do lixo rasgou-se, por isso levei tudo...
• The trash bag tore, so I took everything...

It links cause and result very naturally.

Tudo means everything or all of it.

Here it probably refers to all the rubbish, or all the contents that had to be taken out after the bag tore.

So:

• levei tudo = I took everything

It is a very common pronoun in Portuguese:

• Vi tudo. = I saw everything.
• Perdi tudo. = I lost everything.

It means to the bin on the street or to the street bin.

Let’s break it down:

• ao = a + o = to the
• caixote = a large box/bin; in Portugal it often refers to a rubbish bin or container
• da rua = de + a rua = of/from the street, here meaning on the street

So ao caixote da rua means the rubbish bin/container outside, on the street.

In European Portuguese, caixote is a very normal word in this context, though depending on region and situation you may also hear contentor do lixo.

Because Portuguese usually uses the definite article here.

• de + a rua = da rua

So o caixote da rua is literally the bin of the street, but in natural English that means the bin on the street or the street bin.

This is very common in Portuguese. The language often uses de + article + noun where English would use a different structure:

• o carro do João = João’s car
• a porta da cozinha = the kitchen door
• o caixote da rua = the bin on the street

Yes, definitely. A few natural alternatives would be:

• O saco do lixo rasgou-se, por isso levei tudo ao contentor do lixo.
• O saco do lixo rasgou-se, por isso levei tudo ao caixote do lixo da rua.
• O saco do lixo rompeu-se, por isso levei tudo lá fora.

The original sentence is already natural, but Portuguese often allows several everyday ways to express the same idea.

It is especially common in Portugal, yes.

A learner should know that vocabulary for rubbish containers can vary:

• caixote do lixo
• contentor do lixo

In Portugal, caixote can sound very everyday and familiar. In other varieties of Portuguese, different words may be more common. Since this is European Portuguese, caixote da rua fits well.

Yes, and it is very natural as written.

The sentence goes:

1. O saco do lixo rasgou-se
2. por isso
3. levei tudo ao caixote da rua

That gives a clear cause → result structure:

• first, the bag tore
• then, as a result, I took everything to the outside bin

You could rearrange parts slightly in speech, but this version is smooth, clear, and idiomatic.