The present tense is formed by taking the present stem of the verb, adding the prefix 'می' ("mi-"), and conjugating it. The present stem is often not predictable from the infinitive and so is to be learnt separately. The present stem of the verb خوردن ("xordan") 'to eat' for example, is خور ("xor"), so the present first person singular would be می خورم ("mixoram") 'I eat, am eating, do eat'. The third person singular ending is د- ("-ad"). The negative -ن is pronounced "ne" before "mī", but in all other tenses, it is pronounced "na". Frequently the present tense is used together with an adverb (for example: فردا "fardā" 'tomorrow') instead of the future tense described above.