此时，外面正在下雨。

At this moment, it is raining outside.

外面正在下雨，雨很大。

It's raining heavily outside.

正在下雨，而且是倾盆大雨。

It's raining cats and dogs.

我忘记带伞了，现在正在下雨。

I forgot my umbrella and now it's raining.

因为正在下雨，我们不能去徒步旅行。

We can't go hiking because it's raining.

正在下雨，我不喜欢下雨的天气。

It's raining. I don't like rainy weather.

正在下雨，你带把雨伞吧。

It is raining, take an umbrella with you.

但事实上，外面正在下雨。

Today's the weather is nice. But actually, it's raining outside.

正在下雨还是已经停了？

Is it raining or has stopped?

天正在下雨，但是我仍然要去。

It's raining, still I want to go.