He must be a raving idiot/lunatic.他肯定是个不折不扣的白痴/疯子。
Her last book was a raving best-seller/success.她最近出版的一本书非常畅销/成功。
She's no raving beauty.她可算不上什么绝代美人。
I think you're (stark) raving mad to agree to do all that extra work without being paid for it.我觉得你答应无偿地做所有这些额外工作,纯粹是发了疯。