1. He was diagnosed as having cancer.
2. The cause of death at the time was diagnosed as ‘cerebral disease’.
3. He was diagnosed with a mental disorder.
能理解了吧?如果用diagnose as,那麽前面是人,後面也是人,前面是病,後面也是病;如果用diagnose with,那麽前面是人,後面是病。(但我查了壹些語料庫,混用的情況也很多,上面說的是最嚴格的規則)