She asked me if I would give her English lessons.

　　她問我愿不愿意給她上英語課。

　　I need to improve my English.

　　我需要提高我的英語水平。

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

　　對合格的商務英語教師的需求日益增長。

　　Can you help me put this letter into good English, please?

　　請問你能幫我用通順的英語來表達這信的內容嗎？

　　American English is significantly different from British English.

　　美國英語與英國英語有很大差異。