Question

frame a single sentences using if clause - you should not come late once again .you will be punished.

Answer 1

"The 'if-clause' used here is to indicate a Zero Conditional Sentence where one action or thing is bound to cause another.

Given sentences:  'you should not come late once again' and 'you will be punished'

The answer to the question would be If you come late once again, you will be punished. "