traffic lights which have gone mad 错乱的信号灯,错乱的信号灯,traffice lights 前无the,没有特指.以前错乱的,现在错乱的,将来要错乱的灯,都那特性,此处无需用过去完成时态的结构来修饰.
如果,
These lights flicked continuously like those traffic lights which had mad two months before.
这些灯,不停闪烁,就象那些在此两月前那些错乱的灯那样.(那次错乱的灯,闪烁得很特别,而且被广为人知)
意义就非常微妙,复杂了.