Il cane scava in giardino.

In Italian, a singular count noun used as the subject usually needs an article.

So il cane means the dog. Saying just cane here would sound incomplete in standard Italian.

Also, il cane can sometimes be:

• specific: the dog
• generic: dogs / the dog as a species

In this sentence, the most natural reading is the dog.

Scava comes from the infinitive scavare, meaning to dig.

It is the present indicative, third person singular form, used because the subject is il cane (the dog).

Present tense of scavare:

• io scavo = I dig
• tu scavi = you dig
• lui/lei scava = he/she digs
• noi scaviamo = we dig
• voi scavate = you all dig
• loro scavano = they dig

So:

• Il cane scava = The dog digs

Italian usually does not need a subject pronoun when the verb ending already shows who is doing the action.

Since scava clearly matches he/she/it, and the subject il cane is already there, adding lui would normally be unnecessary.

So Italian prefers:

• Il cane scava

rather than:

• Lui il cane scava or Il cane lui scava (not natural here)

This is one of the big differences from English.

Both can be possible, but they do not feel exactly the same.

• in giardino often means in the garden / out in the yard, focusing on the place as a general setting
• nel giardino = in the garden, with a stronger sense of inside the specific garden

So:

• Il cane scava in giardino = The dog is digging in the garden / in the yard
• Il cane scava nel giardino = The dog is digging in the garden (more explicitly in that particular garden)

Italian often omits the article in some location expressions like this.

It can mean either, depending on context.

Giardino usually means:

• garden
• yard
• sometimes a landscaped outdoor area around a house

So in English, the best translation depends on the situation. If the house has a grassy outdoor space, yard may sound natural. If the focus is on plants and flowers, garden may fit better.

This is the most neutral Italian word order:

subject + verb + place

• Il cane = subject
• scava = verb
• in giardino = location

Italian word order is somewhat flexible, but this version is the plain, standard one.

Other orders can be possible for emphasis, for example:

• In giardino, il cane scava = In the garden, the dog is digging

But the original sentence is the most straightforward.

Here, scava is pronounced with a hard sk sound, not sh.

That is because in Italian:

• sc before e or i sounds like sh
  • scena
  • scimmia
• sc before a, o, u sounds like sk
  • scava
  • scopa
  • scuola

So scava sounds roughly like SKAH-va.

Yes. That would also be correct, but the meaning shifts slightly.

• Il cane scava in giardino = The dog digs / is digging in the garden
• Il cane sta scavando in giardino = The dog is digging in the garden

The simple present in Italian can often cover what English expresses with either:

• the dog digs
• the dog is digging

If you want to emphasize that the action is happening right now, sta scavando is more explicit.

Yes. Scavare is a regular -are verb.

Its endings follow the normal present-tense pattern for -are verbs:

• -o
• -i
• -a
• -iamo
• -ate
• -ano

So once you know a regular -are verb like parlare, it is easier to learn scavare too.

Yes, sometimes it can.

In Italian, the definite article can be used to talk about something in a general sense:

• Il cane è un animale fedele = The dog is a loyal animal / Dogs are loyal animals

But in Il cane scava in giardino, the most natural interpretation is a specific dog doing a specific action.

So grammatically it could be generic in some contexts, but here it normally sounds specific.

Yes, but it changes the meaning.

• Il cane scava in giardino = the dog digs in the garden
• Un cane scava in giardino = a dog digs / is digging in the garden

So:

• il = definite article, a specific dog
• un = indefinite article, any one dog / a dog not yet identified

Both are grammatical; they just say different things.