I’m gonna + (verb) denotes I am going to, you can use while chatting, or sending text messages to friend. It cannot be used in business conversation.
Examples:
” I’m gonna order a coffee. “
” I’m gonna watch the movie. “
” I’m gonna read a book. “
” I’m gonna buy a new car. “
” I’m gonna eat fruits. “
” I’m gonna learn English. “
” I’m gonna call my mom. “
” I’m gonna switch on the fan. “
” I’m gonna be an actor. “
” I’m gonna break the glass. “
” I’m gonna have dinner. “
Using “gonna go”
You can use gonna as a helping verb and go as main verb, for example:
” I’m gonna go to London tommorow. “
” I’m gonna go to the grocery store. “
” I’m gonna go to work. “