将来时态：be going to 后面的词需加ing吗?

将来时态：be going to 后面的词需加ing吗? 将来时态be going to是不是助动词? 一般将来时态除了be going to和will还有其他的结构吗? 关于将来时态 be going to; will do; be there be 句型的将来时态 填空 there ___ going to be 55 students in our be going to后面的动词要加ing形式吗 将来时态的区别be going to;will do;be doing;be to do;be about to do Will(shall) & be going to 将来时态区别应用 be going to do属不属于将来时态? be going to 表将来后面能不能直接加名词? be going to 后面接动词原型还是ing形式 before后面能加will 或be going （将来时态）