Separiamo le macerie dai rifiuti verdi.

Separiamo is the 1st person plural form of separare, so it usually means we separate.

Depending on context, it can also mean let’s separate, because the noi imperative has the same form here.

So this form can mean either:

• we separate
• let’s separate

In an ordinary statement, learners should first read it as we separate.

Because macerie is a feminine plural noun, so it takes the feminine plural definite article le.

• la maceria = a piece/mass of rubble, a ruin
• le macerie = rubble / ruins / debris

In practice, macerie is very often used in the plural.

Dai means from the.

It is made from:

• da = from
• i = the (masculine plural)

So:

• da + i = dai

In this sentence, dai rifiuti verdi means from the green waste.

Because the usual pattern is:

separare qualcosa da qualcos’altro
= to separate something from something else

So:

• separiamo le macerie dai rifiuti verdi
• literally: we separate the rubble from the green waste

This is the normal Italian structure.

In Italian, adjectives often come after the noun, especially in ordinary, literal descriptions.

So:

• rifiuti verdi = green waste

Here verdi agrees with rifiuti:

• rifiuti = masculine plural
• verdi = masculine/feminine plural adjective form

Putting verdi after the noun is the most natural choice here.

Not necessarily. In this context, rifiuti verdi usually means green waste, meaning plant-based waste such as:

• grass clippings
• leaves
• branches
• garden waste

So verdi here is more about the type of waste, not just the color.

Not always, but very often.

There is a singular form, maceria, but Italian commonly uses le macerie as a collective noun for:

• rubble
• debris
• ruins

So for learners, it is useful to remember le macerie as a very common expression.

Italian uses definite articles much more often than English does.

So where English may say:

• rubble
• green waste

Italian often prefers:

• le macerie
• i rifiuti verdi

This sounds natural in Italian, especially when talking about categories of material in a general or practical sense.

Yes, but the given order is the most neutral and natural one.

The standard pattern is:

Separiamo + object + da + what it is separated from

So:

• Separiamo le macerie dai rifiuti verdi.

Other orders are possible for emphasis, but they are less neutral. For example:

• Dai rifiuti verdi separiamo le macerie.

This sounds more marked, as if emphasizing from the green waste.

You usually know from the context.

• In a description of a process, it probably means we separate.
• In an instruction, suggestion, or command, it may mean let’s separate.

For example:

• In a report: Separiamo le macerie dai rifiuti verdi. = We separate the rubble from the green waste.
• In a discussion at a work site: Separiamo le macerie dai rifiuti verdi. = Let’s separate the rubble from the green waste.

The form is the same; context tells you which meaning is intended.

The dictionary form is separare, meaning to separate.

Useful related forms:

• separo = I separate
• separi = you separate
• separa = he/she separates
• separiamo = we separate / let’s separate
• separate = you all separate
• separano = they separate

So separiamo is one form of the verb separare.