these fish which have at times been sighted are simly strange fis_英语解答

these fish which have at times been sighted are simly strange fish
中的been sighted are .怎么理解

人气：492 ℃　时间：2019-09-13 19:21:17

解答

have been sighted 是完成时态的被动语态被看见的
have 是复数说明前面的名词表示复数含义所以后面用 are