问题补充:
the teachers in their school is about 200 and most of them are teachers.
A. A number of ; women
B. A number of ; woman
C. The number of ; women
D. The number of ; woman
答案:
A. A number of ; women
B. A number of ; woman
(答案→)C. The number of ; women
D. The number of ; woman
解析:a number of 表示大量…作为主语时相当于复数形式,而the number of 表示…数量,因而作为主语时,相当于单数形式,同时woman 修饰名词时,变成复数形式,两个都变,故选C