The light in the room must be turned offThe light in the room must be turned off before you leave .为什么要用must be 不是填must turn off

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/28 04:11:58

The light in the room must be turned off
The light in the room must be turned off before you leave .为什么要用must be 不是填must turn off

因为灯不能自己关必须得人为的关掉,所以得用被动语态

灯是需要被关

被动

因为灯是主语,到灯必须由人来关闭。时刻记得按照主谓宾的结构来。