Il ladro ruba la bicicletta.

Il and la are definite articles, meaning the.

• il is used with singular masculine nouns: il ladro = the thief
• la is used with singular feminine nouns: la bicicletta = the bicycle

In Italian, nouns have grammatical gender, so the article has to match the noun.

A common clue is the ending of the noun:

• nouns ending in -o are often masculine: ladr-o
• nouns ending in -a are often feminine: biciclett-a

So:

• ladro → masculine
• bicicletta → feminine

This pattern is very common, though not every noun follows it.

Ruba means steals or sometimes is stealing, depending on context.

It comes from the verb rubare, which means to steal.

So:

• rubare = to steal
• ruba = he/she steals

In this sentence, Il ladro ruba la bicicletta means The thief steals the bicycle.

Because rubare is the infinitive, meaning to steal. In a normal sentence, Italian usually uses a conjugated verb.

Here, ruba is the third person singular form, used with il ladro (the thief), which is singular.

Present tense of rubare:

• io rubo = I steal
• tu rubi = you steal
• lui/lei ruba = he/she steals
• noi rubiamo = we steal
• voi rubate = you all steal
• loro rubano = they steal

This is the normal Italian word order:

subject + verb + object

• Il ladro = the thief → subject
• ruba = steals → verb
• la bicicletta = the bicycle → direct object

This matches standard English word order:

The thief steals the bicycle.

Italian can sometimes change word order for emphasis, but this sentence uses the most neutral pattern.

Italian often uses definite articles in examples or when speaking about a specific situation.

So Il ladro ruba la bicicletta naturally means:

• The thief steals the bicycle

If you wanted A thief steals a bicycle, you would usually say:

• Un ladro ruba una bicicletta

So the articles change the meaning:

• il / la = the
• un / una = a / an

Yes, approximately.

A simple English-friendly pronunciation is:

• Il ladro ≈ eel LAH-dro
• ruba ≈ ROO-bah
• la bicicletta ≈ la bee-chee-KLET-ta

A few helpful notes:

• Italian r is usually rolled or tapped
• u is pronounced like oo in food
• c before i sounds like ch, so bicicletta has a chee sound in the middle
• double tt in bicicletta is pronounced more strongly than a single t

La bicicletta is the direct object.

It tells you what is being stolen.

So in:

• Il ladro = subject
• ruba = verb
• la bicicletta = direct object

You can ask: What does the thief steal?
Answer: the bicycle

Yes, in many contexts Italian present tense can translate as either:

• The thief steals the bicycle
• The thief is stealing the bicycle

Italian often uses the simple present where English might use either the simple present or the present continuous.

If you want to be explicitly progressive in Italian, you can also say:

• Il ladro sta rubando la bicicletta = The thief is stealing the bicycle

But ruba alone can still work depending on context.

Because Italian usually does not need subject pronouns when the subject is already clear.

Here, the subject is explicitly stated:

• Il ladro = the thief

Also, the ending of the verb often shows the subject person and number. So Italian frequently leaves out pronouns unless they are needed for emphasis or contrast.

The plural forms are:

• il ladro → i ladri = the thieves
• la bicicletta → le biciclette = the bicycles

And the verb changes too:

• Il ladro ruba la bicicletta = The thief steals the bicycle
• I ladri rubano le biciclette = The thieves steal the bicycles

Notice the changes:

• il → i
• ladro → ladri
• ruba → rubano
• la → le
• bicicletta → biciclette

Yes. Since la bicicletta is a feminine singular direct object, you can replace it with la.

So:

• Il ladro ruba la bicicletta.
• Il ladro la ruba. = The thief steals it.

Notice that the pronoun la comes before the verb in Italian.

One useful thing to notice is that ladro means thief, not robber in a strict legal sense.

In everyday learning materials, ladro is often translated as thief, and that is the best match here.

Also, don’t confuse:

• rubare = to steal
• il ladro = the thief

Italian often has a noun and a related verb that look different, just as English has thief and steal.