Question

As soon as the bell rang, the boy's come out of the class. Convert into negative without changing the meaning

Answer 1

no sooner did the bell ring,the boy's come out of the class

Answer 2

There was not a single boy who did not come out of the class as soon as the bell rang. OR, As soon as the bell rang, thre was not a single boy who did not come out of the class.

These two sentences show the change of an affirmative sentence into a negative sentence without changing the meaning of the sentence.