比如it must be obvious中的it就是形式主语那么it is good也是形式主语吗?如何区分it是不是形式主语?

比如it must be obvious中的it就是形式主语那么it is good也是形式主语吗?如何区分it是不是形式主语? It must be obvious — the problem itself is.AwhatIt must be obvious — the problem itself is.Awhat Bthat Cwhich Dwhy It Must Be?歌词 it must be It is...that...的句型 求详解It must be obvious what the problem itself is.it 是形式主语,obvious 是表语.这个不是强调句吧?what前面是不是省略了that?what引导的是个什么从句?It is not what we do once in a while that s it is obvious It Must Be Love 歌词 It must be some catch. It must be him 歌词 it must be _____(interest) it must be rainy( )( )(随后) it must be imagination 歌词 It must be very happy. It must be something like it. I guess it’s pretty obvious what you’ll be doing most of today accoring to one belief,if truth ______ be known it will makeitself obvious,...to why? it is obvious that 造句 it is obvious that是什么意思