she sang as she dance 中as 为什么不能用while或when

she sang as she dance 中as 为什么不能用while或when
she sang as she dance 中as 为什么不能用while或when

she sang as she dance 中as 为什么不能用while或when
可以啊,as 强调一边、、 一边、、汉语 “她一边唱歌一边跳舞.或她边歌边舞.when强调在那时,或当、、、时候.while常用延续性动词.

When she dance she sang.
She sang while she dance.
She sang as she dance.

全部能用的
dance应该是danced？