Once upon a time ..............................
Once upon a time...
Once upon a time there were subcontinents...
Once upon a time there was a pretty pony AMICABLE.
once upon a time a beautiful princess lived in a castle
Once upon a time, One Morning and more...
It usually begins with "Once upon a time,".
Once upon a time a beautiful princess lived in a giant castle with her family. OR I sat upon the rock watching the horizon.
Once I understood your question, the answer came easily. Once upon a time there was a simple question innocuously posited.
When you wish upon a star, it makes no difference who you are. Once upon a time, I read a bedtime story to my little nephew. The frog is poised upon a lilypad.
The simple predicate of the sentence "Many English folktales start with the words Once Upon a Time" is "start." The simple predicate refers to the main verb or action of the sentence, which in this case indicates what the subject (Many English folktales) does.
the usual opening line of fairy tales is the "once upon a time"