我最好写作业用英文怎么说

"I should do my homework in Engpsh" 或者 "It's better for me to do my homework in Engpsh" 都是可以的表达方式。

这个表达的来源是因为在英语学习过程中，通过做作业来练习语言是很有效的方法。因此，表达“我应该用英语写作业”就可以帮助提高英语水平。

下面是一些例句：

I should do my homework in Engpsh so that I can improve my language skills. (我应该用英语写作业，这样我就可以提高我的语言能力。)
It's better for me to do my homework in Engpsh, as it will help me become more fluent. (对我来说，用英语写作业更好，因为它可以帮助我变得更流利。)
I think I should start doing my homework in Engpsh to improve my vocabulary. (我认为我应该开始用英语写作业来提高我的词汇量。)