It is best to read a spec script, which is the first one you introduce to agents/producers/actors.
I'm putting up one on my website that you can download for study in format, narrative and dialogue. There are slight exceptions, and I mean slight. So my outline is to standard. There will be no charge to read it, and feel free to save it and share.
Go to bigroost.com and click on Feature Screenplays in the navigator section.