What does the grammar mean in the sentence? https://banksnear-me.com/bank-of-america-near-me/ I have a few questions. What does mean? I don't understand what the grammar point sleep means in this sentence. Why wasn't if alone used?

根据语境来，这句话是前者，那可不 一般情况是同意说话人的观点。 汉语的语义是包罗万象的，用法很活。 如英文中的really，语调不同，意思可能就变了，希望对你有帮助。

天真，调皮的回答方式。肯定。

那可不：表示肯定

it is a fixed expression and literally means: That is necessary.