A big name in his native France, Omar Sy has had a successful foray into Hollywood with several blockbusters but the actor and comedian says mastering English as a new language remains a challenge.
Sy, who shot to fame with comedy TV roles, won a Cesar award - France's equivalent of the Oscars - for his portrayal of a caregiver to a quadriplegic man in "The Intouchables".
He relocated to Los Angeles and appeared in "X-Men: Days of Future Past" and this summer's box office hit "Jurassic World".
"The hardest part for me is the language that I don't speak ... it blocks me a little on certain things," he said in an interview.
"In France, I already have a career and a name that give me access to certain things and here I have to reconstruct all of that. That makes it interesting to work here, to start from zero again."
