I can give you several sentences.
Suddenly, the tribal drumming stopped.
No, but you can make a sentence with the word suddenly. Suddenly it started to rain.
Suddenly, a sharp rap was delivered to the door.
I was in the living room on day, and suddenly the lamp flicked on on its own.
The battling boas were twisting and writhing in the mud, when suddenly an alligator appeared!
Suddenly, I found myself staring into the very maw of the huge shark.
Ablactation occurred suddenly when her son refused to breastfeed at 15 months.
The car suddenly stopped, and just in time! I just stopped by to say hello.
I was suddenly taken aback by quite an unusual sight. That's an unusual design.
i was suddenly surrounded by a group of ninjas! or if you want a actually possible/boring answer i was surrounded by trees
Yes, if it is the first word of the sentence.
suddenly