The airline requires children travelling alone to have a notarized letter of consent from one or both parents.航空公司要求单独旅行的儿童必须出具来自父母一方或双方的同意书。Your family, in effect, signs the consent for you.事实上，你的家人给你签了同意书。Did the doctor ask you to sign a consent form Mrs Harris?哈里斯太太，医生有没有让你签署同意书?