Nowadays, with the rapidly growing popularity of mobile-based social network platform, there is a growing concern over disadvantages of mobile social networking.
He appeared in the doorway, white as a sheet, eyes wide with horror.我理解的是:white as a sheet做主语补足语或者伴随状语,如果理解为伴随状语应该省略了being。另外eyes wide with horror不知道做什么成分?