雅思词汇天天练：亲属关系知多少

女婿 son-in-law;媳妇daughter-in-law姊夫/妹夫 brother-in-law;嫂子 sister-in-law;堂兄弟姊妹cousin;独生子only son;血亲 blood relative;单亲 single parent继子 stepson;继女 stepdaughter;亲生父母 birth parents;养父母 adoptive parents ;寡妇 widow ;鳏夫widower ;外公 grandfather;外婆 grandmother;养父母adoptive parents;养子adopted child