语法是语言的基本要素之一，也是一门永无止境的学问。从英语的角度来说，良好的语法功底对于以英语为第二语言或外语的学习者来说尤为重要，而连词其重要性是不容置疑的. 连词它是连词又称连接词。是一种虚词， 它不能独立担任句子成分而只起连接词与词，短语与短语，以及句与句的作用，它既没有独立、完整的词汇意义，也不能像名词、动词等实词那样可以单独担当任何句子成分，因此，它是一种地地道道的虚词连词虽然用词不多，但是用途广泛。

Grammar is one of the founding elements of a language and a study requiring endless devotion. From the English language's perspective, solid grammar skills are especially important for those who know English as their second or foreign language, and the importance of conjunctions in grammar is unquestioned. Conjunctions are also called connecting words. They are virtual words that don't have an independent meaning, unlike factual words such as nouns and verbs. They cannot be used independently and their only function is to connect between other words, phrases, and clauses. Therefore, although they are unreal, they have a wide variety of uses nonetheless.