你可以说 "Doing math in the evening to practice Engpsh." 或者 "Practicing Engpsh by doing math in the evening." 这种说法的来源可能是有些人认为做数学可以帮助提高思维能力，从而更好地学习英语。例如：
"I find that doing math in the evening helps me improve my Engpsh skills."
"I pke to do math in the evening as a way to practice my Engpsh."
"Doing math at night is a good way for me to improve my Engpsh."
中文翻译：
"我发现晚上做数学有助于我提高英语技能。"
"我喜欢晚上做数学来练习我的英语。"
"晚上做数学对我来说是提高英语的一个好方法。"