来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/17 22:28:23
新概念英语2册47课问题.
Though Mr.Thompson had turned the lights off before he went to bed,they were on in the morning.
请问turned the lights off 能否改成turned off the lights?
为什么,有什么区别啊?
能改,是一样的意思,但如果the lights用it来代的话,就只能放中间
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