She stayed up reading until midnight.stay up 不是不加宾语吗?
3个回答

stay up 熬夜,不睡觉.

you shouldn't stay up to finish the work.你不应该为了完成工作而去熬夜.这句话表示目的,

to do 形式并不是stay up的宾语,它是目的状语;

he stayed up last night,working.这里的doing形式是伴随状语 ,也不是stay up的宾语;

跟stayed up reading 中的reading 一样,都 是伴随状语 ;