"Still" 常用于否定句或疑问句，表示“仍然”或“还”的意思。它来自古英语中的 "stille"，表示“静止”或“不变”的意思。
例句：
He is still sleeping. (他仍在睡觉。)
Are you still working on that project? (你还在做那个项目吗？)
She still has not finished her homework. (她还没有完成作业。)
It is still raining. (还在下雨。)
I still don't understand the question. (我仍然不明白这个问题。)