英语用英文怎么表达？说

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。

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

请问你能帮我用通顺的英语来表达这信的内容吗？

American English is significantly different from British English.

美国英语与英国英语有很大差异。