When an actor or actress speaks in a foreign language in a movie scene, for example when Scarlett Johansson spoke Russian in The Avengers, do they practice the language or do they
![Scarlett Johansson on Motherhood, Superhero Workouts, and Her New Minimalist Beauty Brand | Vanity Fair Scarlett Johansson on Motherhood, Superhero Workouts, and Her New Minimalist Beauty Brand | Vanity Fair](https://media.vanityfair.com/photos/621cfcf8fca2c06e951eaddc/master/w_2560%2Cc_limit/scarlett-johansson-skin-care-lede.png)
Scarlett Johansson on Motherhood, Superhero Workouts, and Her New Minimalist Beauty Brand | Vanity Fair
![Scarlett Johansson: 'Of course I've got a big ego - I am an actor and all actors think they're the one' | Daily Mail Online Scarlett Johansson: 'Of course I've got a big ego - I am an actor and all actors think they're the one' | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2013/12/11/article-2521467-19CDC51A00000578-348_634x415.jpg)