It depends. If you're trying to learn a new language, then yes, watching movies in that language can be helpful. But if you just want to relax and watch a movie, maybe it's not so useful.
這取決於情況。如果你想要學習一種新語言,那麼是的,用那種語言觀看電影可能是有幫助的。但如果你只是想要放鬆看部電影,也許這樣做並不是很有用。