Students learn their lessons in class. They sit in the classroom _______(1) to the teacher.

问题描述:

Students learn their lessons in class. They sit in the classroom _______(1) to the teacher.
因为句中已有谓语动词sit,这个“听”的动作是伴随着sit这个动作同时发生的,所以要用其现在分词listening.那为什么sit又不用现在分词形式呢?请指教,先谢了.

sit是谓语动词,一句话中必须要有谓语的,listening是状语.
其实如果把sit换成 sitting ,把 listening 换成listen也可以.只是强调不同.