每天一个生活口语话题，一段地道的举例回答，并附有详细的词汇，发音及用法讲解。讲解材料选自当今最先进最有效的英语原版教材，更加贴近生活。每天坚持听讲解，并根据问题练习，给自己一个地道输入和输出的机会，你也可以张口自信说英语。

主题：Do you think that yawning is a sign of rudeness?

In America, yawning is considered rude because it implies that the person speaking isn't interesting enough to keep people awake. But I don't think it should be considered rude because it's natural. I even yawn when I'm not tired, for no apparent reason.

Yawning: 打哈欠
Imply: 暗示