be going to be和be going to do的区别为：
一、（Different reference）指代不同
1、be going to be：（Want to be）想要成为。
2、be going to do：（Plan to do sth）打算做某事。
二、（Different usage）用法不同
1、be going to be：（The basic meaning is "want" and "want". It refers to people's hope, willingness or determination to do something or get something. It is a daily language, emphasizing subjective desire.）基本意思是“想”“要”，指人希望、愿意或决心做某事或获得某物，是日常用语，强调主观愿望。
2、be going to do：（When it comes to "need", it can be followed by a passive infinitive or an active gerund.）作“需要”解时，可接被动形式的动词不定式或主动形式的动名词。
三、（The following words are different）后接词不同
1、be going to be：（This phrase is followed by a professional noun.）这个短语后面连接职业名词。
2、be going to do：（What do you want to do after this phrase.）这个短语后面要连接想要做的事情。
