I shall (will)与I am going to 与 I am about to三者的区别

问题描述:

I shall (will)与I am going to 与 I am about to三者的区别
说清用法后,最好可以举几个例子!

I shall 我将会
I will 我将"一定"会
I am going to 我现在去 .(接下去的是个动词)
I am about to 我正刚(打算)要去.(接下去的是个动词)