When learning Japanese in Japan, I figured out one way to sound more native was to just add interjections like “Eeee?” (really?) and “Sou desu ka?” (is that so?

When learning Japanese in Japan, I figured out one way to sound more native was to just add interjections like “Eeee?” (really?) and “Sou desu ka?” (is that so?) while the other person was talking. Makes it sound like you are paying attention and following what they are saying.