1. consider 主动：consider... (to be) /consider...as 把……认为/当作 consider...as 日常可用，但考试推荐用 consider...(to be) I consider him (to be) my best friend. 我把他当作我最好的朋友。 Most students consider this problem (to be) too difficult. 大多数学生认为这道题太难了。 被动：be considered (to be) 被认为是…… The Great Wall is considered (to be) a symbol of China. 长城被认为是中国的象征。 He is considered (to be) the most hard-working student. 他被认为是最勤奋的学生。 2. regard 主动：regard...as 把……看作 We regard Lei Feng as a role model. 我们把雷锋当作榜样。 被动：be regarded as 被看作…… Confucius is regarded as one of the greatest teachers. 孔子被认为是最伟大的老师之一。 3. think of 主动：think of...as 把……看作 We think of him as a reliable person. 我们觉得他是个可靠的人。 People think of Beijing as a city with a long history. 人们把北京看作历史悠久的城市。 被动：be thought of as 被看作…… Pandas are thought of as national treasures. 大熊猫被视为国宝。 注意，还有一个 be thought to be … 被认为是…… (其主动形式极少用) 4. see 主动：see...as 把……看作/觉得……是 I see her as a kind person. 我觉得她是个善良的人。 被动：be seen as 被看作…… Water is seen as the source of life. 水被视为生命之源。