○○○third person⪢⪢
He explains that English does not have a third person singular pronoun that does not identify as male or female.
Zimmer says that more and more "they" is being used to replace the traditional phrase, "he or she".
http://qindex.info/i.php?x=9415
•youglish.com
A great next step is to go to youglish dot com. It's a collection of YouTube videos with subtitles and you can search for a particular word or phrase and then filter by American English.
http://qindex.info/i.php?x=10443