"A glass of water please."

Translation: Um copo de água, por favor.

[will_trew]

Is it not possible to use "Uma xícara" here? Is there a real difference between copo and xícara?

[Paulenrique]

Yes. Xícara = cup (usually for tea, coffee, or a measure for recipes). So it sounds unnatural to ask for "xícara de água"

[will_trew]

So xícara is more like mug (more likely to be made of porcelain) for hot drinks and copo is more like glass for cold drinks?

[Paulenrique]

Yes, xícaras are usually made of porcelain and copos of plastic or glass.... but there isnt a rule on hot or cold. But the main idea is that ;)

[JavierCenc]

Qual é a diferença entre "Se faz favor" e "faz favor". Eu acho que não ha nenhuma...

[Marciacandelaria]

No Brasil usa-se mais "por favor", em Portugal preferem dizer "se faz favor".

[bodzaza]

Why is wrong: "Um copo com água, por favor."

[dionezvi]

Because it is not usual! But to speak is de same thing!

[azevedocas]

It would be "A cup WITH water, please."

[sasha.adina]

Keep mixing It up with Spanish "copa"

[stellar7225]

A minute ago there was a question using com instead of de and I read a comment that someone said if you say "copo de água" they'll respond that they only have "de vidrio"...is it the same question or am I confused?

[Davu]

Do you mean this discussion?: https://www.duolingo.com/comment/666928

It's just a jokey response and both "com" and "de" can be used, in fact, according to one of Paulenrique's comments in that thread, "de" is more common.

[lisa.aciar]

Why is "uma taça de agua por favor" wrong?