glancing at the bits of wood and metal that lay around him,the man sadly picked up the mattress为什么前面要用glancing?不用glance
问题描述:
glancing at the bits of wood and metal that lay around him,the man sadly picked up the mattress
为什么前面要用glancing?不用glance
答
动词分词做状语吧
答
现在分词做伴随状语