英语复合名词变复数,
问题描述：
英语复合名词变复数,
a man teacher
a woman driver
a boy student
a passer-by
a grown-up
a looker-on
a film-goer
a sister-in-law
答
men teachers
women drivers
boy students
passers-by
grown-ups
lookers-on
film-goers
sisters-in-law