worth doing sth 的意思是“值得做某事”,不是被动语态结构,也不含被动语义。
it is worth doing sth 是系表结构+主语补足语(= doing sth is worth),是句型 it worth + 名词 的变体。it 为形式主语,指代动名词词组 doing sth。由于 doing sth 不等于 sth being done,因此这个句型不能理解为被动语义的句子。实际上,英美英语里都没有 it is worth to do 或者 sth is worth to be done 这种表达方式。例:正确:It is worth shopping at factory outlets. (在厂家直销店购物很值。)错误:It is worth to shop at factory outlets.正确:It is worth learning English. (学英语值得。)错误:It is worth to learn English./ English is worth to be learned.以上是所有回答。希望帮到您。