It's going to be cold tomorrow. [=it will be cold tomorrow]明天将会变冷。

It's going to rain: if you don't take an umbrella, you're going to get soaked.天要下雨。如果你不带把伞，会被淋湿的。

I am not going to tolerate [=I won't tolerate] any more bad behavior!我再也不会容忍任何其他不良行为了！

I was just going to call him. [=I was about to call him]我当时正要给他打电话。