Use this pattern whenever you wish to express your intention to do or not to do something.

只要你想表达是否打算做某事，都能使用这个句型。

I will 课堂 - SpeakingMax英语口语达人

So it's very different from "I will". You're saying, "I am, right now, going to do something in the future."

因此这个句型跟“I will”有很大不同。你实际上表达的意思是，我现在正打算将来做某事。

I'm going to 课堂 - SpeakingMax英语口语达人

You can use the "I'll" pattern to show that you intend to do something,

你可以用 "I'll" 句型来表示你正打算做某事。

I will 课堂 - SpeakingMax英语口语达人

and say "I won't", which of course means that you will not do something.

用 “I won't” 来表示并不打算做某事。

I will 课堂 - SpeakingMax英语口语达人