Who helps them do some housework?改为被动语态晕 2L 3L 谁对啊......
问题描述：
Who helps them do some housework?改为被动语态
晕 2L 3L 谁对啊......
答
Is the housework often done by Tom at home? Does the housework often been done by Tom at home Is the housework often done by Tom
答
By whom are they helped to do some housework ？
答
who are they helped to do some housework by?
上面答得我认为不对,首先句意没有by不通,其次改为被动不定式不能省略要加to
希望对你有帮助
答
Who are they helped to do some housework by? 或 By whom are they helped to do some housework ？都可以。