Why would you put “do not” in this sentence? It sounds strange and weird.we use the word “don’t” in a situation like this.
“Don’t” and “do not” are equal in meaning. The usage of these two depends on the style of the author/speaker. “Don’t” can be as emphatic as “do not”. “Do not” is preferred in text or speaking that doesn’t allow for contractions. Please respond with the original sentence so I can respond specifically to your question. You ask "Why would you put “do not’ in this sentence?” However you had not included the specific sentence you are referring to.