be about to和be going to的区别：含义不同、用法不同。be about to的中文含义为“即将做”、“决计要”、“拿定主意要”，表示即将发生的事情，一般不加时间状语；be going to的中文含义为“将”，既可表示说话人的主观打算，也可表示客观现象。

be about to意为即将做，马上做;决计要，拿定主意要。

例句：That could be about to change, however.

不过，这一情形很快就能得到改变。

They may have already created life or may be about to.

他们可能已经创造了生命或即将产生生命。

They may have already created life, or may be about to.

它们可能已经孕育了生命。

A more rational era could be about to begin.

一个更理性的时代可能即将开始。

They should display a crisp texture, and be about 1 to 1.5cm in diameter.

这时的萝卜质地鲜脆，直径大约1至1.5厘米。

be going to意为将。

例句：Why would you not be going to the dance?

你为什么不去跳舞

So he'll be going to the bank. We need to get there first.

那他就会去银行，我们得抢先一步

Our author has to be going to the airport soon

我们的作家要尽快赶往机场

Who else can he be going to see-except the prisoner?

他还会去见谁呢——除了那个罪犯之外？

Okay, back up. Why would you be going to Jenna's?

等等你为什么要去詹娜家

I'll be going to Brazil to teach a seminar on coffee next summer.

我明年夏天会去巴西教一个关于咖啡的研讨会。