An alternate form on is often used more informally. The verb system in Haitian Creole is quite different from those in French and English. There is no subject-verb agreement, and there are no verb tenses per se. Instead, Haitian Creole uses a system of markers or short particles, which precede the verb, to indicate tense. The verb with no marker may indicate simple present tense or immediate past tense.
Some examples follow.
Jan ranmase liv yo. John collects the books. Jan ak Gabi ranmase liv yo . John and Gaby collect books. Li te marye mwa pase.