El menú d'avui té sopa, peix i arròs.

D'avui means of today or, more naturally in English, today's.

So El menú d'avui literally means the menu of today, but in natural English we would usually say today's menu.

• avui = today
• de = of
• d'avui = of today / today's

The apostrophe appears because de becomes d' before a word that begins with a vowel.

So:

• de + avui → d'avui

This is very common in Catalan and works a lot like elision in French.

Other examples:

• d'aigua = of water
• d'estiu = of summer

Catalan often uses the definite article where English might or might not use the.

Here, El menú d'avui means Today's menu or literally The menu of today.

• el = the for a masculine singular noun
• menú is masculine, so it takes el

So:

• el menú = the menu

Yes, té literally means has. It is the he/she/it form of the verb tenir = to have.

Here the subject is El menú d'avui, which is singular, so té is the correct form:

• tenir = to have
• té = has

In Catalan, it is completely natural to say that a menu has certain dishes, just like English can say Today's menu has soup, fish, and rice or includes soup, fish, and rice.

In lists of food items on a menu, Catalan often leaves out the article.

So:

• té sopa, peix i arròs

means the menu includes those items in a general menu-list sense.

This is similar to English, where we also usually say:

• It has soup, fish, and rice not
• It has the soup, the fish, and the rice

If you added articles, it would sound more specific, as if referring to particular known dishes rather than listing menu items.

Here peix means fish as food, not a single fish swimming around.

Catalan often uses the bare noun for food items in menus and lists, so:

• peix = fish
• arròs = rice
• sopa = soup

In this sentence, peix is best understood as fish in the food sense.

I means and.

So:

• sopa, peix i arròs = soup, fish, and rice

It is the normal Catalan word for and.

A useful extra point: before a word beginning with i or hi, Catalan often changes i to e to avoid awkward repetition of the same sound.

For example:

• pare e fill = father and son

But in your sentence, arròs does not begin with i, so it stays i.

The accent marks help with pronunciation, and sometimes they also distinguish one word from another.

• menú: the accent shows the stress falls on the last syllable
• té: the accent distinguishes it from te and marks the stressed vowel
• arròs: the accent shows both stress and the quality of the vowel

For a learner, the most useful thing is:

• menú is stressed on the last syllable
• té is pronounced like teh with stress
• arròs is stressed on the last syllable

A rough pronunciation guide is:

el meh-NOO da-VOY teh SO-pa, PAYSH ee ah-RROS

A few notes:

• avui sounds roughly like a-VOY
• peix sounds roughly like paysh
• arròs has a rolled or tapped r, and the final syllable is stressed

So the rhythm is roughly:

El menú d'avui té sopa, peix i arròs.

Yes. Besides El menú d'avui, you may also hear el menú del dia, which means the menu of the day or today's set menu.

The difference is:

• el menú d'avui = today's menu
• el menú del dia = often the daily menu / set menu of the day

Both are common, but menú del dia is especially common in restaurants.