Here's a brief explanation about PERO and SINO: PERO means "but" and is used to introduce a contrast or exception to what was said before. Example: Quiero ir al cine, pero no tengo tiempo. (I want to go to the movies, but I don’t have time.) SINO means "but rather" or "but instead" and is used when correcting or contrasting a negative statement with an alternative. Example: No quiero té, sino café. (I don’t want tea, but rather coffee.) Use PERO for general contrasts and SINO after a negative statement to offer a correction or alternative.