Whether or not we know what the term "movie language" is by strict definition, all moviegoers understand that the dialogue in movies is a bit different than reality. Writing this dialogue can be a bit difficult and there are some rules you must follow. Here are several important ones.
Instructions
1. Movie language comes in all shapes and forms. There is no end-all method to writing scripts.
2. Consistency is key. Whichever direction you take the script, be sure that the language stays the same.
3. Movies exist in their own little world; due to this, the language can be its own. It doesn't need to follow real-life rules as long as it's consistent and the audience understands it.
4. Use word repetition to get points across. The fact that multiple characters repeat words or phrases establishes the language and shows similarities more than expository description could.
5. Along similar lines, a character going against the established language shows more about him/her than cliche rebellious wardrobe or dialogue.
6. Movie language needs some semblance of realism to it. Otherwise, it's just a bunch of characters speaking in slang or using jargon. "House" is a great TV show because it combines the medical jargon required to stay credible with the real-life dialogue of normal humans.
