求指教一段关于介绍江南style的英语文字的时态以及语法方面的错误

求指教一段关于介绍江南style的英语文字的时态以及语法方面的错误
Is the Cangnam style popular around the world do you think?Maybe you don't know who's PSY ,but you must be know of the cangnam style,aren't you?what's the cangnam style like?let's listen to it.that's not exciting.
后面这一句that's not exciting我是仿照you aren't lucky来写的.整段话的意思是,你认为江南style在全世界受欢迎么?也许你不知道谁是鸟叔,但是你一定听过江南style,不是么?江南style是怎么样的呢?让我们来听吧,非常给力哦.我想问个问题哦you must be know of the cangnam style这句话中must be 后面接的是know of 那么按照用法来说 know是不是因该用knowing?但是这里know of 也是条介词短语啊