什么是连词?
连词(Conjunction Words)是用来连接单词、短语、从句或句子的词。它们帮助构建更复杂、更有逻辑性的句子结构。
常见连词分类
1. 并列连词(Coordinating Conjunctions)
用于连接语法地位相同的成分,常用口诀为 FANBOYS:
- For(因为)
- And(和)
- Nor(也不)
- But(但是)
- Or(或者)
- Yet(然而)
- So(所以)
例句: I wanted to go for a walk, but it started raining.
2. 从属连词(Subordinating Conjunctions)
引导从句,使其依附于主句,表示时间、原因、条件、让步等关系。
- because, since, as(原因)
- if, unless(条件)
- although, though, even though(让步)
- when, while, after, before, until(时间)
例句: Although she was tired, she finished her homework.
3. 连接副词(Conjunctive Adverbs)
用于连接两个独立句子,通常用分号或句号隔开。
- however, therefore, moreover, nevertheless, consequently
例句: He didn’t study; therefore, he failed the exam.
使用小贴士
- 避免“逗号拼接”(comma splice):不要仅用逗号连接两个完整句子,应使用连词或分号。
- 注意从属连词引导的从句位置:可置于句首或句尾,但句首时需加逗号。
- 连接副词前后通常需要标点符号(如分号+逗号)。