Question

He did his homework last night改为被动句

Answer 1

原文意思：他昨晚做了作业
改后意思：作业昨晚被他做了
①宾语提前：将his homework提前
②看时态：昨晚是过去式，根据被动语态be done结构，be动词为过去式was，do过去分词done。
③主语置后：by sb.，这里he要变成宾格him，连起来就是by him
将三部分合起来就是His homework was done by him。
希望能帮助到您！感谢采纳！

Answer 2

His homework was done by him last night.

Answer 3

He did his homework last night
改为被动句是
His homework was done by him last night.

Answer 4

He did his homework last night改为被动句
His homework was done last night.