各位英语大神大家好主动语态变被动语态句子改写太难了谁可以教我改写步骤，我每次都做不对，题是图片里的
第1个回答 2018-02-14
A new bridge is being built over the river by them.
A newspaper was delivered by the postman this morning.
I was given a present by my mother yesterday.
The thief have been arrested by the police.
A letter was being typed by he.
倒数第二个应该是has been 吧 第三人称单数
追答哦，是的，不好意思我打错了
追问第一句可以用 by them 吗
打错了第一句可以用by they 吗
追答不好意思，我之前没看见你追问了。此处by是介词，后面应加人称代词的宾格，所以不能为they
追问那最后一题那个by he 是不是错了你应该打by him 对吗
还在吗
本回答被提问者和网友采纳