Old Globe’s production of ‘English’ features from left, Mary Apick, Ari Derambakhsh, Pooya Mohseni, Tara Grammy and Joe Joseph (Photo: Rich Soublet II) By Sandi Masori Sandi Masori Tara Grammy, left, and Ari Derambakhsh in ‘English’ at the Old Globe Theatre. (Photo: Rich Soublet II.) SAN DIEGO — As native English speakers, we often take for granted how difficult learning the language can be. Unlike other languages whose rules stay pretty consistent, our rules are almost defined by their exceptions. We rarely think about the effort that immigrants and tourists alike must put into learning our t…