the language of movies

We always see English movies as a way to improve our oral English and vocabulary, but we still need Chinese version for better understanding. So, what is the difference between languages of movies and the language on our textbooks?

Generally speaking, the dialogues and conversations in your textbooks were written by a Chinese teacher and usually contain the same set patterns of speech that you are familiar with (Fine, thank you. And you?). Often conforming to these patterns to the point of losing any natural sense of conversation. Movie dialogue is generally more natural and because of its variety of situations and the visual medium as it allows for more situation specific language to be shown. This is helpful a lot! You can often learn a lot of new natural utterances from watching movies. The textbooks seem to be too rigid and are "one phrase fits all situations" in thinking.

I would recommend finding a TV show which you like and mimicking the language they use.