be thought to be讲述事实,be thought of as后面是观点.
be thought to be 的例句：
跟形容词Frog not been seen for 50 years and thought to be extinct is discovered in Israel.
跟名词He was thought to be a good student, until he was caught with drugs.
be thought of as的例句：
Left-handed people were thought of as abnormal and sometimes even as the victims of a disease.
被认为的观点是推测
后面可以跟名词 Being thought of as a beautiful woman has spared me nothing in life.
跟形容词 Why are southerners thought of as stupid?
跟动名词 I am thought of as being loud and excessively friendly.