One of the most difficult parts of debating for both native speakers and ESL students is rebuttal. From my experience the rebuttal part for Japanese ESL learners is especially hard since debating is not something that they commonly do even in Japanese. The most important aspect is providing them with a structure to follow.
To rebut effectively in English debates, here are some essential tips:
Active Listening: Understand your opponent's arguments by actively listening and taking notes.
Preparation: Anticipate your opponent's points and prepare your arguments in advance.
Signposting: Structure your rebuttal by starting with an acknowledgment of the opponent's point.
Address Key Points: Focus on the most crucial aspects of your opponent's argument in your rebuttal.
Provide Evidence: Support your counterarguments with facts, statistics, or examples.
Expand Vocabulary: Enhance your English vocabulary to express your ideas more effectively.