Jane: Is she a doctor? Mr. Green: Yes, she is an excellent doctor. Jane: Is she your colleague?

• 简:打扰了,格林先生。那是谁呀?格林先生:那是玛丽。简:她是医生吗?格林先生:是的,她是很出色的医生。简:她是您的同事吗?格林先生:不,她不是。