The bell rings.是简单句.The end of the afternoon school.这个不是句子,只是一个短语. She dislikes people who don't help others.是定语从句,who don't help others 修饰 people. Memories that flood my mind as soon as I close my eyes.这不是句子.因为没有谓语动词.that flood my mind 是定语从句,修饰memories,后面的as soon as I close my eyes是时间状语从句.