首先,你少打了一个词,原句应是:
Our school is quite different from what it was before.
句意同上 分析如下：
quite为副词修饰different增强语气 即意为“很不相同”
what it was before是个主语从句 即意为“这所学校从前的样子”
...其它与法注意点应该没啥了
最后,