就(某人某事)发表看法; 评论(某人等) express one's opinion about (sth or sb)
comment on sb/sth
Would you care to comment on any troublesome students in your class?
你愿意谈谈你对你们班上调皮学生的看法吗?
I commented on his actions, speech without any prejudice.
我评论他的行为、言论丝毫不带偏见。
The minister refused to comment publicly on these claims.
部长拒绝公开评论这些要求。
comment on wh-clause
Would the mayor care to comment on why he voted against the new housing project?
市长是否愿意谈谈为什么他投票反对新的建房规划?
The teacher often comments on〔upon〕 how different the two boys are.
老师经常谈论那两个孩子的不同之处。