While “sí” is a good place to start, there are many other ways to express consent in Spanish. The next time you want to say “sí”, try one of these phrases instead. Here are some commonly used phrases and examples of how to use them: However, if you want to amplify your game and venture into a really meaningful conversation, you need to step out of your comfort zone. 2) Creo que sí → I think so. (Literally: I think so). Subscribe below if you want more tips on learning Spanish, and check out the rest of the conversational Spanish series… .