Question

机器运转时别用手摸。

误：Don't touch the machine when it is been operating．

正：Don't touch the machine when it is being operated．

Answer 1

答案：
解析：

因被动语态总结构为he done，因此不少学生误将现在进行时被动语态结构is／am／are being done写成is／am／are been doing，造成被动语态结构错误。