Write one or two sentences that illustrate an original example of ad hominem. then write two or three sentences explaining why this is a good example of ad hominem. use proper spelling and grammar.

Ok so in basic terms, ad hominem is attacking your opponent and not there position. An example would be:
You cannot believe my opponent; his hair is untidy and his visage is beyond unprofessional.
By saying that the opponent is "untidy and unprofessional", you are attacking his character. Rather than arguing against his position, the attack of the opponent's character is Ad hominem.
I hope this helps :-)