1 连词的用法 一、概说 连词，是一种虚词，不能担任一个句子成分，但可以起连接的作用，即连接词与词或句与句。如： We may be leaving today or tomorrow. 我们可能今天或明天走。（连接词与词） Now I must go or I shall be late for the party. 我现在得走，否则晚会我就要迟到了。（连接句与句） 主要是包括并列连词和从属连词。在句子中，连词起连接词与词、短语与短语及句子和句子的作用。它本身在句子里不单独做句子成分。 并列连词：是用来连接语法地位相同的结构、相同的单词、短语及句子。 并列连词有：and, but, or, nor, so, for yet, however, as well as, both...and, not only...but also, either...or, neither...nor, still, 从属连词：用来引导状语从句。 从属连词有：after, when, before, as, while, since, until, till, if, unless, lest, because, than, that, whether, so that, in order that, as if, as though, although, suppose that, provided, that, as...as, now that, such...that, in case that, on condition that 二、连词的种类 连词有两类： 1）从属连词：引导从句。随着从句作用不同，它们又可分为几类： 从句种类 主要从属连词 时间从句 when while as before after until till whenever 条件从句 if unless supposing provided(ing) suppose 目的从句 in order that so that that so lest 结果从句 so…that such…that so that so 原因从句 because as since 让步从句 although though even though(if) while 方式从句 as like the way as if as though 地点从句 where wherever 比较从句 than as 此外还有 that, whether 等从属连词可引导名词从句，在句中担任主语、宾语等。 2）并列连词：连接两个互不依从的次、短语或分句： Slow but sure. 要慢而稳。（连接单词） She’ll be back either this week or next week. 她将在这周或下周回来。（连接短语） 2 I went and she went also. 我去了，她也去了。（连接分句） 并列连词有下面几类： 表示意思转折的连词 but yet however nevertheless 表示因果关系的连词 for so therefore hence 其他并列连词 and or either…or neither…nor not only…...
