"到什么再说"是一个中文短语，意思是"wait until something before saying or doing something". 这个短语源自中文，并不是英文原有的表达方式。

如果你想用英语表达这个意思，你可以用"wait until"或"hold off until"这样的表达。例如：

"Let's wait until the meeting is over before we discuss the plan." (在会议结束之前，我们不讨论计划。)
"I'm going to hold off until I have more information before making a decision." (在我有更多信息之前，我会推迟做决定。)

当然，你也可以用"wait to"或"hold off on"来表达这个意思。例如：

"I'm going to wait to speak until everyone is finished." (我要等到每个人都说完再说。)
"Let's hold off on making a decision until we have all the necessary information." (让我们等到拥有所有必要信息之后再做决定。)