return可以用本身表示被动吗

不能，因为它常用作及物动词，中文意思是v. 回来，回去归还，退还回报，回应（感觉或情况）重新出现，恢复重新开始，继续（某项活动）带来，产生（利润或损失）回击，击回 宣告（裁决）选举，选出（建筑）（尤指成直角）转延（墙壁）（高尔夫）打后九穴（美橄）截获（对方传、踢或漏球）反攻（桥牌）（尤指同伴所攻出的同花色牌赢墩后）跟着打出，回出把（空瓶或空罐头盒）送到回收站

被动结构为be returned

Their hope， and their expectation， was that she was going to be found safe and that she would be returned to her family.

他们的希望和期盼是她被找到时安全无恙并被送回她家。

return可以表被动，也可以有主动语态。

如：The book was returned to the library。这本书被还回了图书馆。

After being returned to the USA ，he was convicted on drugtrafficking charges. 在（被）遣返美国之后，他被判毒品走私罪

例句：

All the children have been returned safely to their parents. 所有孩子都平安地回到了父母身边

改为主动语态为：All the children have returned safely to their parents. 所有孩子都平安地回到了父母身边。