Manhattan一个例句 求讨论！

前来围观

A new textbook focused on recent advances in artificial intelligence (was assigned)by our instructor.   
这里是focused on 还是 focusing on呀

咖啡印象

个人觉得这里是（which is）focused on

前来围观

咖啡印象 发表于 2018-6-19 15:17
个人觉得这里是（which is）focused on

okk..谢谢～我觉得有道理。那为何这里要用被动？是因为书是被写的，所以书自身不能主动focus on sth 吗？～～