I was startled by a sudden noise.
All of a sudden a wild badger attacked me.
All of a sudden I found that I had written a sentence in reply to a question.
all of a sudden.......
Her impulse to shop was starting to take over her whole life. Another good sentence would be, she had a sudden impulse to buy the expensive purse.
The bus stopped with a sudden jolt.
It is called an exclamatory sentence.
I sold my stock when the market showed a sudden decline.
The complete subject of the sentence is "a sudden storm." In this sentence, "a sudden storm" is the noun phrase that tells us what the sentence is about. It includes the article "a" and the adjective "sudden" along with the noun "storm."
Caught in a sudden downpour, we were absolutely drenched. She looked absolutely beautiful on her wedding day. He was absolutely positive that he had locked the front door.
a good sentence for precipitation is Yesterday I was watching precipitation fall.
"A sudden flash of light in the night sky." That isn't a sentence at all, since it has no predicate (verb).
Outwardly serene, his emotions boiled.His sudden reaction surprised everyone, as he was always so outwardly charming.