语法规范
1. 不完整的句子
（1） If you find that writing is hard is because it is hard. One of the hardest things that people do.
If you find that writing is hard is because it is hard—one of the hardest things that people do.
（2） Stereotypes are a kind of gossip about the world. A gossip that makes us prejudge people before we ever lay eyes on them.
Stereotypes are a kind of gossip about the world， a gossip that
