yeah, i think it's useful, but depands how you watch the films. you just want to watch the storylines, that'll be weak in helping. need to develop in listen one after another, follow the sentences one by one. that'll be better i think.
it depends to ourself. In my opinion, sometimes when we are watching films on public television, we almost learn English unthoroughly. It caused by subtitles above television's frame when the film rolled. Well, it amuses us indirectly to enjoy that film without any purposes to learn English. But in the other hand, it is important to take or learn listening lesson of English. So, its gonna be better if that film is unsubtitle.... :D
Yup. It's one of of a good way to improve our listening skill. Besides, while we are watching, we can pay attention to the pronunciation of the actors/actress. Automatically, it can give an effect to our pronunciation, too.
Oh yes indeed, it's one of the most effective ways of learning a language. I always provide my students with lots of subtitled films and a short introduction to the story and/or the director's themes.
Besides being an excellent didactic tool, a film is also a cultural vehicle with plenty of complementary information on the 'civilization' that produced it.
yes of course thats the best way
and you can realize the usual form of speaking