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"Yo" is a pronoun which is often translated as "I", and "cuando hace sol" is a phrase which is often translated as "when it's sunny". Learn more about the difference between "yo" and "cuando hace sol" below.
yo()
A pronoun is a word that stands in for a noun (e.g., she).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
3. (psychology)
cuando hace sol()
A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. when it's sunny
Siempre vamos al parque cuando hace sol.We always go to the park when it's sunny.