薄冰实用英语语法详解A课程-lesson59

actor,actress;
bridegroom,brideg;
count,countess;
chairman,chairwoman;
fiance,fiancee;
gentlman,lady;
host,hostess;
headmaster,headmistress;
heir，heiress;
hero,heroine;
landlord,landlady;
lad,lass;
master,mistress;
manager,manageress;
monk,nun;
masseur,masseuse.