one and two days,one day or two ,one to two days,这样的表示都正确吗?

one days or two days,one days or two,one or two day,one and "an or two days""one day or two""one or two days""one and tw a day or two,one or two days 后面的动词分别用单数还是复数? 歌词：“One day Two days Three days”是什么歌? 问下用英文说“一天或两天”咋说?是“a day or two”,“a day or two days”,“one day one two one two one year or two one or two year 的意思 one or two in one or two one more 的意思,two more days的意思?讲解一下这样的该怎样翻译? 有没有：one day or two one and one is two