表示转折关系的连词
常见的表示转折关系的并列连词有but(但是),while(然而),yet(然而)等。
1.but的用法
but意为“但是,然而,可是”,连接两个句法作用相同的单词、短语或句子。
例句:(1)He is young,but very experienced.
(连接两个作表语的形容词)
(2)The man was so tired,but he still went on working.
(连接两个分句)
(3)He is rich,but he is unhappy.
(=Although/Though he is rich,he is unhappy.在but连接的并列句中,but前面的分句可以转换为 although/though引导的让步状语从句,但转换为从句后应删去but。)
2.while的用法
while在表示转折关系时,往往连接内容和结构对称的两个部分,用来表示鲜明的对比。
例句:(1)I love strong tea while my father loves coffee.
(2)At school,some students are active while some are shy.
3.yet的用法
yet意为“但是,然而”,常连接句子,表示惊讶或者转折。
例句:(1)She said she would be late,yet she arrived on time.
(2)Mike was usually so careful,yet this time he made a small mistake.
注意:although不能与表示转折的but连用,但是可以与yet连用。另外,yet用作副词时可与并列连词 and或but连用,构成习语and yet或but yet,且两者大致同义,均想当与表转折的but。