有什么英语短语是表示前句的否定的?

题目

有什么英语短语是表示前句的否定的?
譬如现在有一句话：
We must make clear that in which situation this will happen and (in which situation this will not happen).
有没有一些表示前句的否定的短语可以代替括号里的内容?

答案

if you use or instead of and,you can just use " or not"We must make clear that in which situation this will happen or not.otherwise it should just be something likeWe must make clear that in which sit...