Three years_____（pass） since he came to china.中为什么不用被动语态

Three years_____（pass） since he came to china.中为什么不用被动语态 Three years has passed since he came to China.中为什么用has He came here three years ago.（同义句转换） Three years_____ ______ ever since she came to china,为什么came不用第三人称单数形式呢? He was happy to be made the host.为什么不用to?不是说被动语态中要变成be made He_____(live)in Beijing since he came to China. since he came to china是一段时间吗? Mr Brown___(live) in bejing since he came to china 初二英语一道填空题.Three years ______(pass) since we came to this sch He came to China three years ago,so he ---in China A used to How long have___lived here?Since they came to China three ye Peter made many friends since he came to china这句话中哪个地方错了,找出错