his task has been fulfilled是现在完成时的被动语态吗?

我来回答好了,我是专业的
这是完成时的被动语态是 have+been+过去分词,这个句子主动句为：He has been fulfilled his task.
所以当然是被动.你查到是是形容词没错,但是你应该查fulfill.短语是 fulfill one's task.
令具有形容词意思也有动词意思的lost：my watch was lost.被动
he is lost in thought.（他陷入沉思）形容词