had been raining是什么时态

It had been raining and the street was still wet.

天一直在下雨，街道仍然很湿。

If it had been raining, I could have stayed inside.

如果一直下雨，我可能就待在家里了。

If it had been raining yesterday, I would not have come here.

如果昨天还在下雨的话，我就不会到这里来。