内容正文:
连词
连词是短语、连接词、从句或句子的一种虚词,不能单独作句子成分。
按词义和句法作用分类,连词分为两类----并列连词和从属连词。
连词的用法:
1. 并列连词的用法
(1) 表示引申和增补意义
1 and的用法
· 连接两个或两个以上单词、短语或句子,意为“和,同,与”,表示顺承关系
Eg: Lisa and I decided to walk to school.
It’s important for us to develop good eating and living habits.
· 表示增补和强调,意为“而且,并且”
Eg: He likes these books, and Tom likes them, too.
2 both... and...的用法
只能连接两个并列成分,意为“...和...”、“既...又”,并列成分做主语时,谓语动词用复数形式
Eg: Both she and Sarah are interested in talent shows.
Cindy can both sing and dance.
3 neither... nor...的用法
连接两个并列成分,意为“既不...又不...”,并列成分做主语时,谓语动词的形式遵循就近原则。
Eg: Neither you nor I am going to attend the meeting.
He has neither money nor time.
4 not only... but also...的用法
连接两个并列成分,意为“不仅...而且...”。并列成分做主语时,谓语动词的形式遵循就近原则。连接两个分句,not only位于句首时,句子要倒装。
Eg: Not only my sister but also my parents like the actor very much.
Not only did he say it, but also he did it.
5 as well as的用法
连接两个或两个以上并列成分,意为“同......一样;也”。并列成分做主语时,谓语动词的形式遵循就远原则。
Eg: The teacher as well as the students enjoys the school art festival.
She can speak Chinese and English as well as Japanese.
(2) 表示转折意义
1 but意为“但是”
Eg: We reached school on time but he was late.
2 while意为“然而”,表示对比
Eg: My father likes reading while my mother likes listening to music.
3 yet意为“然而,可是”,常连接两个并列分句
Eg: Life is fine and enjoyable, yet you should learn to enjoy your fine life.
(3) 表示选择关系
1 or连接两个并列成分,意为“或”,表示一种选择关系。并列成分做主语时,谓语动词谓语动词的形式遵循就近原则。
Eg: He or I am not responsible for the accident.
Do you want to take a shower, or have dinner first?
2 either...or...连接两个并列成分,意为“要么...要么...”,表示一种选择关系。并列成分做主语时,谓语动词谓语动词的形式遵循就近原则。
Eg: Either she or I am right.
(4) 表示因果关系
for意为“因为”,语气比because弱,不能用于回答why的问句,不能置于句首。
Eg: You’d better put on your coat, for it’s rather cold outside.
2. 从属连词的用法
(1) 引导状语从句
1 引导时间状语从句
引导时间状语从句的从属连词主要有when, while, as, as soon as, before, after, since, until/til等。
Eg: What were you doing when the rainstorm came?
His father came back home while he was playing computer game.
I’ll call you as soon as I arrive S