为什么有些句子在逗号后的动词要用ing?如AccordingtoProfessorWang,slightlymorethanhalfoftheschoolchildreninourcountryareshort-slightly,{ranking}thefirstintheworld.

问题：为什么有些句子在逗号后的动词要用ing?如AccordingtoProfessorWang,slightlymorethanhalfoftheschoolchildreninourcountryareshort-slightly,{ranking}thefirstintheworld.

答案：↓↓↓

季统凯的回答：

网友采纳　　在动词后加ing在句中充当状语,表示主动语态或动作正在进行.　　祝楼主更上一层楼