这项活动帮助我的英文表达可以是 "This activity has helped me with my Engpsh" 或 "I have improved my Engpsh through this activity."
来源：这个表达是根据英文动词 "help" 和 "improve" 的常用意义和用法组合而成的。
一些英文例句及其中文翻译：
This language course has really helped me improve my grammar. 这门语言课程真的帮助我提高了我的语法。
Attending these conversation clubs has helped me become more confident in speaking Engpsh. 参加这些英语会话俱乐部帮助我在英语口语方面变得更自信。
Practicing my pstening skills through these onpne activities has helped me better understand spoken Engpsh. 通过这些在线活动练习我的听力技巧帮助我更好地理解口语英语。