人教高中英语第一轮复习：连词.docx

连 词
定义：连词是一种虚词， 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。
分类：根据在句中所起的作用，连词主要可分为并列连词和从属连词两类。
并列连词：连接具有并列关系的词、短语或句子的连词叫作并列连词。
根据意义，它又可分为表示联合、转折、选择和因果等四种关系的连词。
一、表示联合关系的并列连词
表示联合关系的并列连词有：and, both…and, neither…nor, not only…but also, as well as(除……外……也……)等。
eg: I am a teacher and he is a doctor.
He has both experience and knowledge.
Neither I nor he has seen the film.
He has experience as well as knowledge.
He has not only experience but also knowledge.
二、表示转折关系的并列连词
表示转折关系的并列连词有but, while(然而), yet(可是), however(然而，但是)，nevertheless(然而，不过)等。
eg: I am sorry, but I won’t be able to come tonight.
I am willing, yet unable. 我心有余而力不足。
He is short, while his younger brother is tall.
He worked hard. However, he failed. 他很努力，然而还是失败了（however可置于句首、句中或句末）
另外：副词still也能表示转折关系
The pain was bad, still he did not complain.
虽然疼得厉害，可是他没有呻吟。
三、表示选择关系的并列连词
表示选择关系的并列连词有or(或), or else(否则), either…or…(或……或……，不是……就是……)。
eg: John or I am to blame(责备).
Seize the chance, or else you will regret it.
(or else常置于祈使句后面)
You can either stay at home or go fishing.
另外：副词otherwise, rather than也能表示选择关系
Seize the chance, otherwise you will regret it.
He went rather than stay as an unwelcome guest.
四、表示因果关系的并列连词
表示因果关系的并列连词有so, for等。
eg: It was late, so I went home.
It is morning, for the birds are singing.
另外：副词then(那么，因而),