Na es diminutivo de "nada". Nothing
Si vieras = "If you saw..."
there is no word si in English
'si je' means "if I" in English.
"Si te cojo" in English translates to "If I catch you."
"Si alguien" translates to "if someone" in English.
if
"Si no está en inglés" means "if it is not in English" in English.
yes pretty
Si se ve
"Si te quiero" in English translates to "I love you."
Si enviar mas in English means whether to send more.
Yes, at twelve.