首先,正式的语言往往更有礼貌。
formal language is different from informal language in several ways.正式语言与非正式语言在许多方面都不同。
There are bound to be some words and phrases that belong in formal language and others that are informal.必定存在着一些属于正式语言的单词和短语,也存在着另一些属于非正式语言的词汇短语。