句型转换,变被动.
问题描述：
句型转换,变被动.
变被动
1.they built a birage over the river.
2.bell invented the telephone in 1876.
3.he spends too much time playing volleyball.
4.wokers make cars in the factory.
5.he turned on the TV after dinner.
6.they often talk about sports.
7.his mother looks after him well.
答
句型转换,变被动.
1.A bridge was built over the river.
2.The telephone was invented by Bell in 1876.
3.Too much time is spent playing volleyball by him.
4.Cars are made by workers in the factory.
5.The TV was turned on by him after dinner.
6.Sports is often talked about by them.
7.He is looked after well by his mother.