Hello! Nice to see more Japanese people learning Spanish. As for chileans, i can tell you, we use a verb form in which, if the verb ends in 's', we change it to 'i', if we're talking about actions directly related to someone. for instance: tu saltas? ( do you jump? ) becomes... tu saltai? ( do you jump? ) if the verb ends in '-es', we either use the PAST form, or make an entirely new word: tu duermes? ( do you sleep? ) becomes... tu dormis? ( do you sleep? ) keep in mind this is very informal, but we use it nonetheless, sometimes even with not-so-close people. i think argentinians use it sometimes too, and they also have their own verb changes and syllable stressing. for instance ven (come, imperative form) ---> veNÍ. salta (jump, imperative form) ---> salTÁ as for us chileans, another thing we do is, we almost don't pronounce the final 's', in words that end with it... like in one of the above examples 'duermes' is pronounced more like 'duermeh' something like the 'u' not heard in 'です'. also... a little comment about 'Si po'. 'po' is an emphasis expression, and I could safely say its meaning is really alike to the japanese よ ending, in the emphasis it adds. hope this helps! sorry for not using spanish to answer, but maybe you'll be able to understand better this way

there's a lot in each country. For example argentinians pronounce "ll" as "sh" or people who lives in caribbean pronounce "r" as an "l", or simply they don't pronounce some letters, but you get used to it....they are also called language disruptions

初めまして, Aquigiroさん. More correct: Me interesa el español. Tengo una pregunta. Me gustaría conocer los dialectos de cada país hispánico. この 電子メールで conocer のほうが saber より せいかい です. (Is this phrase correct in japanese?) I would like you correct me in japanese. ありがとう.

No son dialectos, solo son modismos. Todos los hispanoparlantes nos entendemos entre nosotros. si aprendes español en cualquier parte del mundo te sirve para todos los otros paises, solo una una pequeña diferencia de pronunciacion. En la TV o en el cine te puedes dar cuenta de ello. Saludos.