一、概说 R*{?4NKG
连词是一种虚词,用于连接单词、短语、从句或句子,在句子中不单独用作句子成分。连词按其性质可分为并列连词和从属连词。并列连词用于连接并列的单词、短语、从句或句子,如and, but, or, for等;从属连词主要引出名词性从句(主语从句、宾语从句、表语从句等)和状语从句(时间状语从句、条件状语从句、目的状语从句等),引出名词性从句的连词如that, whether等,引出状语从句的连词如when, because, since, if 等。 HV7(6VSJ+
二、并列连词的用法 L[r0UXYLV
1. 表示转折关系的并列连词。这类连词主要有 but, yet 等。如: >!F,y3"5S
Someone borrowed my pen, but I don’t remember who. 有人借了我的钢笔,但我不记得是谁了。 ;fME4Sp
He said he was our friend, yet he wouldn’t help us. 他说他是我们的朋友,但却不肯帮助我们。 J9c3d~YW
2. 表示因果关系的并列连词。这类连词主要有 for, so 等。如: (Tb0PzA
The child had a bad cough, so his mother took him to the doctor. 这孩子咳得很利害,所以他妈妈带他去看医生。 :k/U7 2
You are supposed to get rid of carelessness, for it often leads to serious errors. 你们一定要克服粗枝大叶,因为粗枝大叶常常引起严重的错误。 xt0j9{p
注意:for表示结果通常不能放句首,也不能单独使用。 y1My,
?"?
3. 表示并列关系的并列连词。这类连词主要有 and , or , either…or , neither…nor , not only…but (also) , both…and , as well as 等。如: ?q }wl\"8
He didn’t go and she didn’t go either. 他没去,她也没去。 _ rVX_
The weather is mild today; it is neither hot nor cold. 今天天气很温暖,不冷也不热。 !Lug5U}
Both New York and London have traffic problems. 纽约和伦敦都存在交通问题。 Kf^F#dA
It is important for you as well as for me. 这对你和对我都很重要。 E!l1a5qB
People who are either under age or over age may not join the army. 年龄不到或者超龄的人都不得参军。 6="&K_Q7
三、从属连词的用法 #LgoKiP!Y
1. 引导时间状语从句的从属连词 }v,P3
(1) 表示“当…时候”或“每当”的时间连词。主要的 when, while, as, whenever。如: q$'&R