It came to rain toward evening.
It began to rain toward evening.
It began to rain in earnest.
She lost her way and on top of that it began to rain.
They had hardly started when it began to rain.
It began to rain when he went out.
As soon as he went out, it began to rain.
He came back, and it rained soon.
As soon as he went out of the house, it began to rain.
The moment he arrived at the station, it began to rain.
All at once the sky became dark and it started to rain.
Suddenly, it began to rain.
Suddenly, it started to rain very hard.
The road was quite muddy, and, what is worse, it began to rain.
The snow has just come on.
I thought it was going to clear up. On the contrary, it began to rain.
Hardly had I started when it began to rain.
When the next singer came on, it began to rain.
I lost my way and, what was worse, it began to rain.