这句话对吗?Some songs,had always been single cycle.

问题描述:

这句话对吗?Some songs,had always been single cycle.
single是adj.可以修饰cycle吗?

Some songs,had always been the single cycles.
可以,但是少冠词,单复不一致.谢谢~ had been不是要加动词的吗?had always been 一直是,可以当动词用后面加名词We have always been good students.

 single cycles作为泛指,可以不加the吗?
如果用复数,当然可以