Dobbiamo sgomberare questo corridoio.

Dobbiamo is the present tense, 1st person plural form of dovere.

• dovere = to have to / must
• dobbiamo = we have to / we must

So the sentence is talking about what we are required to do.

Italian often leaves out the subject pronoun, so noi dobbiamo and just dobbiamo both mean we must.

Because after a modal verb like dovere, Italian normally uses the infinitive of the main action verb.

So:

• dobbiamo sgomberare = we must clear
• not dobbiamo sgomberiamo

This is similar to English structures like we must leave, we can go, we want to eat.

Common Italian modal verbs that work this way are:

• dovere = must / have to
• potere = can / to be able to
• volere = to want

Here sgomberare means something like:

• to clear
• to clear out
• to empty
• to free up

With corridoio, it usually means removing whatever is blocking or occupying the corridor.

So it does not usually mean to clean in the sense of washing or sweeping. It is more about making the space free and usable.

Examples:

• remove boxes from the hallway
• move people out of the way
• clear obstacles

Because corridoio is a masculine singular noun, so the demonstrative adjective must agree with it.

Agreement here is:

• questo
  • masculine singular noun
• questa
  • feminine singular noun

So:

• questo corridoio = this corridor / this hallway
• questa stanza = this room

The ending -o in corridoio is a strong clue that the noun is masculine singular.

In Italian, demonstratives like questo, questa, questi, and queste usually replace the article rather than appearing with it.

So you say:

• questo corridoio = this corridor

not normally:

• il questo corridoio

That is different from some other structures in Italian where articles are very common. With basic demonstrative adjective + noun combinations, the article is usually not used.

Because Italian often drops subject pronouns when they are already clear from the verb form.

• dobbiamo already tells you the subject is we
• so noi is optional

You would add noi mainly for:

• emphasis
• contrast
• clarity

For example:

• Noi dobbiamo sgomberare questo corridoio, non loro. = We have to clear this corridor, not them.

But in a normal sentence, just dobbiamo sounds natural.

That is the normal word order here.

Italian commonly uses:

• modal verb + infinitive + object

So:

• Dobbiamo sgomberare questo corridoio.

is the most neutral order.

You can move things around for emphasis, but the basic pattern is very standard and natural.

Yes. Dovere can cover both ideas.

So dobbiamo sgomberare questo corridoio could be understood as:

• We must clear this corridor
• We have to clear this corridor

The exact nuance depends on context, tone, and situation. Italian does not always separate must and have to as sharply as English sometimes does.

With a modal verb like dovere, Italian gives you two common options.

You can say:

• Lo dobbiamo sgomberare.
• Dobbiamo sgomberarlo.

Both mean We have to clear it.

This is a very useful pattern to learn:

• pronoun before the conjugated modal verb
• or attached to the end of the infinitive

Both are correct and common.

It is a very common and natural word for corridor or hallway, especially in buildings.

Depending on context, English might say:

• hallway
• corridor
• passage

Italian corridoio works well in all of those kinds of indoor passageway contexts.

So in this sentence, corridoio is completely natural.

You would need to change both the noun and the demonstrative so they agree.

Singular:

• questo corridoio = this corridor

Plural:

• questi corridoi = these corridors

So the full sentence would become:

• Dobbiamo sgomberare questi corridoi.

Agreement is important in Italian, so the demonstrative changes with the noun’s gender and number.