如果你帮忙做了家务，可以用英文说: "I helped with the housework."

这个表达来自英语中的动词"help"和名词"housework"的结合。"Help"意思是"提供帮助"，"housework"指的是家务，包括做家务、打扫卫生等。

下面是一些英文例句和它们的中文翻译，希望对你有帮助:

"I always try to help with the housework on the weekends."
我总是尽量在周末帮忙做家务。

"I offered to help with the housework, but my husband insisted on doing it himself."
我主动提出帮忙做家务，但我丈夫坚持自己做。

"Do you want me to help with the housework today?"
今天你想让我帮忙做家务吗？

"I appreciate your help with the housework. It really makes a difference."
我很感谢你帮忙做家务。真的很有帮助。