The spelling and pronunciation rules of Spanish are extremely consistent, and a conjugated form of the verb may have to change its spelling in order to maintain the pronunciation of the infinitive. In the yo form of some verbs, adding - í or - é to the base of the verb changes the pronunciation of the word, so the spelling is changed to elicit the same basic sound as the infinitive. Verbs that end in -car The vowel that follows the letter c determines whether it is pronounced hard (like a k ) or soft (like an s ). The c is pronounced soft when followed by an i or an e ; it is pronounced hard when followed by an o, a, or u . Thus, a verb ending in - car has the hard c sound in its infinitive form. All the conjugated forms must maintain this sound, but the preterit yo ending causes problems. The c becomes a soft sound when you add -
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