He is a excellent doctor 这句话哪里错了?

He is a excellent doctor 这句话哪里错了? he has became a doctor,which he want to be.这句话错了吗?错哪里? What is the doctor have这句话哪里出错了? The old man might is a doctor.这句话错在哪里 He is writing a report at a moment.这句话哪里错了 Your mother is a doctor?哪里错了? Judged from his book,he is a teacher.这句话哪里错了 He name is Tom.这句话哪里错了 He is help his grandpa这句话哪里错了 he is a doctor He is our teacher. We love to listen to he. 这句话哪里错了 he is so hard that he looks old. 请问这句话哪里错了呢?谢谢