I was blown away
After discovering the fuse had blown Jack replaced it and fixed the fault in the circuit.
The steeple was blown over by a hurricane and the tower was damaged by an earthquake.
His head gasket was blown.
Blown is the past tense of blow. "The wind had blown down the tree in our yard."
Many tumbleweeds had blown through this field already.
I blew them to oblivion with an atomic bomb; they were blown to oblivion; the Universe was sucked to oblivion; its like they appeared out of oblivion
The leader of the pride was very territorial.
The sentence "trees were being blown over by the wind" is in passive voice because the subject (trees) is receiving the action (being blown over) rather than performing the action.
It means something is blown out of proportion or something's really incorrect. "Your paper looks ridiculous because you wrote microscopic!"
"blown" is correct to use with the auxiliary verb "has". A past participle is needed to create the perfect verb tenses. "The gale force wind has blown the roof off the garage." (present perfect)
My teacher was so intelligent that I was blown away!
The use of "hopefully" to mean something like "it is hoped" or " we hope" is not good. Better to say "We hope..." or "With any luck..." Otherwise the sentence is correct, if a little vague.