"Your key"

Translation: Sua chave

[Zacq1121]

When do you know when to use "sua" instead of "teu"

[nnaOop]

tua/teu = yours (tua/tuas - fem words; teu/teus - masc words)
sua/seu = yours, his, hers, its (sua/suas - fem words; seu/seus - masc words)
ex. • "your key" = "a tua chave", "a sua chave"
• "your keys" = "as tuas chaves", "as suas chaves"
• "your monkey" = "o teu macaco", "o seu macaco"
• "your monkeys" = "os teus macacos", "os seus macacos"

if u have to say "you" its more preferable to use tua/teu, since sua/seu means also his, hers, ecc..

[LaurenDaHeath]

When is it appropriate to use 'teu' and 'tua'?

[Paulenrique]

When it is related to "tu"

[Paulenrique]

http://www.duolingo.com/comment/294129

[Belle51409]

Why is it not 'A sua chave' please?

[Paulenrique]

It's also right.

[Ricardo.orjuela6]

But I have a question, I wrote "Seu chave" and it hasn't been correct. is it correct or not? Thanks.

[Paulenrique]

It's not correct. "Chave" is a feminine noun, so you should use "sua".

[DraKovcs330405]

Seu is in case of words with artikel "o".

[Spam179946]

It is not correct

[RigoAsenci]

Could I have written Tua chave and been correct?

[Paulenrique]

Yes, it is also right.