We have to be careful when using sarcasm, however, because if the person inviting me really wanted me to go to the opera, and I made such a sarcastic comment, he might be extremely offended.

• 但是，在应用一些讽刺的说话时，我们要非常小心，如果邀请我去看歌剧的人是认真地想我赴约，而我给予这种讽刺的回答，便会得罪了朋友。