Brit shares the one-word 'dead giveaway' that American actors can't do an English accent

Brit shares the one-word 'dead giveaway' that American actors can't do an English accent

When it comes to actors doing accents across the pond, some Americans are known for their great British accents, such as Natalie Portman ("The Other Boleyn Girl"), Robert Downey, Jr. ("Sherlock Holmes"), and Meryl Streep ("The Iron Lady"). Some have taken a lot of heat for their cartoonish or just plain weird-sounding British accents, Dick Van Dyke ("Mary Poppins"), Kevin Costner ("Robin Hood: Prince of Thieves") and Keanu Reeves ("Bram Stoker's…