同学你好，该知识点来自沪江网校《新概念英语2、3、4册连读【双11专享班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
still 通常用于表示对某件事发生或持续很长时间感到惊奇，如：
She was still looking at me. (她仍在看着我)
There are still plenty of horses round here. (附近仍有很多匹马)。

Don't tell me that you are still eating a banana. 别告诉我你还在吃香蕉。

而still在完成时中，多与否定形式搭配，表示“仍然还没有……”
The psychological effects on the United States were immense and in Washington the wounds have still not fully healed.
对美国造成的心理影响是巨大的，在华盛顿创伤仍未完全弥合。

祝同学学习进步~