her parents are both teacherteacher后加s不?
问题描述：
her parents are both teacher
teacher后加s不?
答
不加，TEACHER不用加S
答
可加可不加！
答
不加s，此处teacher只是指教师这个职业，没有复数之意
答
不加， teacher在这里标职业名称，泛指
答
加s,因为是复数parents
答
要+