一个小小的英语问题：students learn their lessons in class.they sit in the classroom listening tostudents learn their lessons in class.they sit in the classroom listening to the teacher carefully.这儿listen为什么要加ing呢?
问题描述：
一个小小的英语问题：students learn their lessons in class.they sit in the classroom listening to
students learn their lessons in class.they sit in the classroom listening to the teacher carefully.这儿listen为什么要加ing呢?
答
they是主语,sit in the classroom是谓语,listening to the teacher carefully是现在分词做伴随状语,原句可改为they sit in the classroom,and listen to the teacher carefully at the same time ,但就没有那种同时发生的韵味了,英语中经常用分词,不定式做状语