常见的标准变化形式如下：

usually 变成 often 或 all the time（all the time改放句尾）
helps 改成 aids 或者 assists
helps her mother 改成 lends/gives a hand to her mother 或者 lends/gives her mother a hand

如果是对in the afternoon划线提问,则为：When does Sue usually help her mother?
如果是对her mother划线提问,则为：Who/Whom does Sue usually help in the afternoon?