“Gonna” is an informal spoken form of “going to,” used especially before another verb to talk about the future. It is common in casual speech and writing but not in formal writing.
“Gonna” developed naturally in spoken English as “going to” was said quickly and the sounds blended together. Over time, this pronunciation was written down in dialogue and song lyrics.
When you say “I’m gonna go,” you’re not literally talking about movement with “going”; you’re marking the future tense. English secretly uses “go” as a helper word to talk about the future, just like “will.”
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