Are Helen and her pet going out for a walk?/Are Helen going out for a walk with her pet?
原句Do Helen and her pet go out for a walk every day 应翻译为：海伦每天都和她的宠物出去散步吗?
改写为现在进行时应为：
Are Helen and her pet going out for a walk?或是：Are Helen going out for a walk with her pet?海伦现在是不是正在和她的宠物散步呢?
否定回答,因为一般疑问句中的谓语动词为"are",所以否定形式也应用“are".而海伦和她的宠物并不是单一一个人或物,因此应用复数形式.所以,本题否定形式应改为：
No ,they aren't.