will = a decision you make in the instance or a deferred decision Example: I'll do it now! = instant decision If it rains I won't go. = deferred decision going to = a decision already made prior to the present moment I'm going to marry her. = decision made in the past It isn't that hard, really. Hi hi.

When it comes down to it, they are very much interchangeable. For instance if you say, "I am going to go now" or "I will go now", the meaning is going to be similar. "I am going to" and "I will" both infer that you are discussing the future and therefore either one can work for that purpose.

很类似汉语里的“我吃着饭；我正在吃饭”这样的句子，有时候互换页没关系。 没有什么很大的不同。 这就是传说中的语感吧。 给你一个最典型的例子，记住就行了，毕竟语言不是全是规律性的： 下雨时常用： it‘s going to rain。