“我希望能在英语相关领域工作,提高我的英语水平,并且长期在英语相关领域发展”用英语怎么说?不要百度的

I hope to improve my English by working in a related area,and to work in such a field for a long time.谢谢，但我有个问题，work为什么要加ing啊？