这个句子正确吗?If i know something that I cannot tell anyone

这个句子正确吗?If i know something that I cannot tell anyone 这个句子：I'm going to tell you something that you need to pay at SOMETHING THAT I ALREADY KNOW tell me something i don't know If you cannot quit smoking,I hope that u will never know how well did i know him and well did i know me这个句子正确吗? what should i say if anyone wants to know What,I,anyone,don't,if,Know,连词成句 What would happen if I don't know anyone? What,I,anyone,don't,if,Know连词成句 what if I don't know anyone 的意思 用if,news,i,you,tell,will,i,the,know,it连成句子