天空有很多云,要下雨了.英语怎么说

There are many clouds in the sky.It's about to rain.

Lots of clouds in the sky. lt is going to rain.

供参考
It is cloudy and (is) about to rain。
注
天﹐尤指天气时﹐多用 it
cloudy 多云
about 快将﹐正要﹐但还未

Lots of clouds in the sky ，it seems to be raining soon.

with many clouds in the sky,it is going to rain.

It is cloudy and going to rain.
The clouds are gathering , it is going to rain .
The sky has clouded over ,it is going to rain .
The sky is overcast ,it is going to rain .
自己选一句吧，我觉得第一句最简洁最好