"We are eating his rice."

Translation: Wir essen seinen Reis.

[DemontMore]

We are drinking his beer
Wir trinken "sein" Bier (das)

vs

We are eating his rice
Wir essen "seinen" Reis (der)

I got confused between these 2 and require confirmation or assistance please?

When the article is masculine, the positive pronoun changes but when it is neuter, it remains unchanged?

[mizinamo]

Exactly.

Only masculine words have a separate form in the accusative case — feminine, neuter, and plural words look the same in the accusative case as they do in the nominative case.

[Satya1995]

Why seinen and not seine ? Since rice is Feminine

[Ly_Mar]

Because “der Reis” is not feminine, it's masculine.

[Satya1995]

Thank you ! I make a mistake in my notes.. Took it as Feminine instead of Masculine !

[Ly_Mar]

Eh, it happens :)
Glad I could clear the confusion.

[Jrgen329695]

My word book says "das Reis" not masculine but neuter!!

[mizinamo]

das Reis is a rare word meaning something like a shoot of a plant.

der Reis is a much more common word meaning rice.

If your dictionary only has das Reis, it's not a very good one.