英语语法分析

This was such a great breach of etiquette, he hardly knew what to do.

这是一起规矩的严重违反，他几乎不知所措了。

《柯林斯英汉双解大词典》

China is a nation of etiquette.

中国是礼仪之邦。

Make sure you know British social etiquette.

确保你知道英国的社交礼仪。