he asked you to call him back at 10 o'clock,back at 10 o'clock在这地方充当什么?宾语补足语?
问题描述：
he asked you to call him back at 10 o'clock,back at 10 o'clock在这地方充当什么?宾语补足语?
答
call...back是一个短语,at 10 o‘ clock 做时间状语