Not to be rude but why

Not to be rude but why i do not mean to be rude 为什么不直接to rude don't be rude to sb!为什么它的否定形式不是be not rude to sb呢? be rude to sb造句 be rude about it还是be rude to it It's not right to _____ (be rude to )the old. Not to be served,but to Serve Not to be angry but to strive! Not to be angry,but to strive 为什么在be前面用don't比如 Don't be rude.而不是 Be not rude. be rude to sb还是for sb Treat everyone with politeness,even those who 中文版Treat everyone with politeness,even those who are rude to you -not because they are nice,but b中文版are rude to you -not because they are nice,but b中文版 “To be alone,but not lonely. To be a1one·but not Be just to all,but trust not “I just wanna say happy birthday to Lily.Sure I’ll get out after that.” I don’t wanna be rude,but will you!please!f**k off!right now!” ：“Don’t be such an asshole!” ：“Don’t be such an asshole!” ：“He is not an asshole.He j Not to Be Angry , But to Striue这个是什么意思? 拜托! not necessarily to be strong,but to feel strong.