被动啊,
accidents caused by和accidents are caused by都有
但是有区别
accidents are caused by+sth.,比如by the unawareness of drivers
但是
accidents caused by sth.+句子
e.g.
accidents caused by careless drivers are very serious
被动啊,
accidents caused by和accidents are caused by都有
但是有区别
accidents are caused by+sth.,比如by the unawareness of drivers
但是
accidents caused by sth.+句子
e.g.
accidents caused by careless drivers are very serious