No sooner had I left the house than it started raining.
I have other questions for this sentence. :D

Is it means "no sooner than it started raining"?

But we sooner than it started raining, because I had left the house. :D
Even we still be rained ( can I say that ?? We be rained ?)

Why do we put had in this position?
Does it emphasize and refer to I left the house?

"Not until" and "no sooner" are really advanced, I can not find them in my grammar book - Basic English Usage. :wink: