I don't believe it这种用法错在哪了?

I don't believe it这种用法错在哪了? i don't believe it和i don't believe so有这种用法么? I don't believe it! I don't believe it./ I believe not. I don't believe I don\'t believe 词组：I don't believe it 和 I don't believe 有何区别? I don't believe you did had done it.能不能写成I don't believe you did在这里表强调行不行?I don't believe you did have done it. I believe isn't true和I don't believe it's true有什么区别 I make a mistake,It's don't believe you. i don't believe it __you say so