his ability to act at great speed 我无法理解这句英语话的结构,这个at是干嘛的?
问题描述：
his ability to act at great speed 我无法理解这句英语话的结构,这个at是干嘛的?
答
act at……是连一起用的,at是介词
his ability to act at great speed 我无法理解这句英语话的结构,这个at是干嘛的?
act at……是连一起用的,at是介词