he ---to help his classmate who was ill in the bed他自愿帮助生病的同学 volunteer加s还是ed

问题描述:

he ---to help his classmate who was ill in the bed他自愿帮助生病的同学 volunteer加s还是ed
为什么老师说s呢 s的话 后面的was 是怎么回事呢

volunteered
祝你学习进步,更上一层楼!(*^__^*)
有不会的可以再问我:)为什么是s 后面who was是was 呢是啊,所以用过去式,用volunteers 与后面的was时态矛盾,所以错误。我们老师说s呀老师说的不对,如果用volunteers的话,后面的was要改为is。