"Ja mam tamtą herbatę."

Translation: I have that tea.

[Davoskan]

Shouldn't it be: ... tamtę herbatę? It's in the Accusative case. I'm confused.

[Viersch]

No. Tę (ta) is just a specific word and it's the only adj in acc with -ę at the end. Every other adjectives in acc describing feminine nouns end with -ą.

[ActualGoat]

You're thinking of the feminine instrumental case, I believe.

[JulieBaird1]

Can "Ja mam tamtą herbatę" also mean "I am having that tea."?

[Jellei]

No. Such usage of 'having' is equivalent to 'drinking', and that is not the meaning of the Polish sentence.

[MotleyCrow]

What about in a shop selling (dry) tea eg at the supermarket? How do you point out the tea you are 'having'?

[Ariadna4321.6]

here it is harder. I am affraid :O

[AdriennPle]

Why is "ja" used here? "Ja mam..." instead of simply "Mam..."?

[br0d4]

Probably a matter of style, or perhaps to make it easier to translate in the reverse direction. It is not wrong in any way.

[BaciLacsi]

Should"I have this tea" be eccepted?

[br0d4]

No. Polish "tamten/tamta/tamto" is only English "that", while English "that" can be either Polish "ten/ta/to" or "tamten/tamta/tamto".

Read more here: "Why English "that" is sometimes Polish ten, sometimes tamten?"