[译] 星期天我不得不干些家务活。
[误] On Sundays I have to do some homework.

[正] On Sundays I have to do some housework.
[注] homework 指“家庭作业”，如：Students usually do their homework after supper. 学生们通常在晚饭后做作业。housework 指家务劳动，如：洗衣、熨衣、打扫、做饭等。例如：A housewife is always busy with her housework. 家庭主妇总是忙于家务。/Modern inventions have facilitated housework. 现代发明减轻了家务劳动。上述二词均不用复数形式。