When I turnedoff the lights in the office, I locked the door and left.
这个句子对吗？
When I turned off the lights in the office,I locked the door and left.
句子不对，至少不好。主如果主句动作与从句动作的先后关系没体现出来。可以改为：
When I had turned off the lights in theoffice, I locked the door and left.
After I turned off the lights in theoffice, I locked the door and left.
