Though Mr Thompson had turned the lights off before he went to bed,they were on in the morning

题目

Though Mr Thompson had turned the lights off before he went to bed,they were on in the morning
但早晨灯却都亮着they were on in the morning 为什么这么说阿?好别扭

答案

be on:1.在进行,在上演,(灯)亮着 2.演出 3.上演,上映
they were on=the lights were on即那些灯是亮着的.