english的复数形式

　　She asked me if I would give her English lessons.

　　她问我愿不愿意给她上英语课。

　　I need to improve my English.

　　我需要提高我的英语水平。

　　There is a growing need for qualified teachers of Business English.

　　对合格的商务英语教师的需求日益增长。