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"Si" is a form of "si", a conjunction which is often translated as "if". "Ah" is a form of "ah", an interjection which is often translated as "ah". Learn more about the difference between "si" and "ah" below.
si(
see
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
ah(
ah
)An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
2. (used to express interrogation) (Latin America)
Regionalism used in Latin America: all the countries in South America, Central America, and the Caribbean. Does not include Spain.