No sooner will the environment be high quanlity than people start to protect it.这句话对吗?

单词quanlity拼错了（正确应为quality),还有时态不对.
no sooner.than 固定用法"一...就..."
引导时间状语从句,主句用过去完成时,"than"后面的从句用一般过去时
另外,内容和逻辑上个人认为存在问题.看起来想要表达的意思是：人们一开始保护环境,环境就变成高质量的了.想想也不可能啊.你昨天少往地上扔一张废纸,今天PM2.5就消失了?
就这个内容而言,no sooner than句型不太适合.如果一定要用,建议改为：
No sooner had people started to protect the environment than its quality became better.那如果我想表示在人类保护环境之前，环境不会变好，应该用什么句子比较好呢？要不这样，咱说得严重一点？The brutal status of the environment nowadays would never be released unless people have the sense to protect it and really take actions.除非人类有意保护环境并真正采取行动，否则今日环境之严峻态势绝不会缓解。