0 past simple and past participle of rain
There's a slight coolness in the air - do you think it's going to rain?
This little stream can become a deluge when it rains heavily.
It's rained all day today.
It had been raining hard most of the afternoon.
You'll have to stay in at playtime today, because it's raining.
For example, from the new fact ' 'the grass is wet' ', one can abduce that ' 'it has rained not long ago' '.
It was always raining, it rained every day.
And then when it rained it won't come on you.