Though class over ,some students continued studing in the class room.为什么用stuiding 不用to study 答案上只用st

题目

Though class over ,some students continued studing in the class room.为什么用stuiding 不用to study 答案上只用studing

答案

continue to do 是指,停下原来在做的事,接着做另一件事.
continue doing是指接着做之前做的事,
从上下语境来看,意思是,虽然下课了,同学们仍继续学习.和之前做的是一件事,所以用doing.