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"Have to go" is an intransitive verb phrase which is often translated as "tener que ir", and "I" is a pronoun which is often translated as "yo". Learn more about the difference between "have to go" and "I" below.
have to go(
hahv
tu
go
)An intransitive verb phrase is a phrase that combines a verb with a preposition or other particle and does not require a direct object (e.g., Everybody please stand up.).
1. (general)