连词
连词是一种虚词，用于连接词与词或句与句，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。
一、并列连词
1、表示并列关系的并列连词有：and, neither…nor, not only…but (also), both…and, as well as
Eg:Neither you nor I am right. 你和我都不正确。
Not only my father but also I am interested in football. 不仅我爸爸而且我也对足球感兴趣。
Both she and Sophia were pleased with the girl. 她和索菲娅都对这女孩满意。
Tom as well as I walks to school every day. 除了我，汤姆也每天步行去上学。
2、并列连词的作用
（1）表转折关系
表示转折关系的并列连词有：but, yet, while, however
Eg：I failed again, but I won't give up.
我又失败了，但我不会放弃的。
I was born in Dalian while I grew up in Canada.
我在大连出生而在加拿大长大。
（2）表因果关系
表示因果关系的并列连词有so, therefore, for
Eg：I got up late, so I didn't catch the early bus.
我起床晚了，所以没赶上早班车。
The days get longer, for it is already July.
天变长了，因为已经是七月了。
（3）表选择关系
表示选择关系的并列连词有or, either…or…，otherwise
Eg：Work hard, or you will fall behind.
努力学习，否则你会落后的。
Either you or he is going to do some shopping this afternoon.
今天下午或者你或者他去购物。
注意：
(1)both…and…意为“……和……”，连接两个成分作主语时，谓语动词要用复数。
(2)neither…nor…意为“既不……也不……”；not only…but (also)…意为 “不但……而且……”；either…or…意为“或者……或者……”。它们连接两个成分作主语时，谓语的数通常与靠近其的主语的数保持一致，即遵循“就近原则”。
(3)as well as意为“而且，还，又”，它连接并列主语时，谓语动词应与它前面的主语一致
3.
and : 表对等 “和、并且”
but: 表转折 “但是”
so: 表因果 “所以”
|
|
练一练
A、1. I failed again, ___ I won’t give up.
A. and B. but C. so
2. This is my first lesson, __ I don’t know your names.
A. and B. but C. so
or: 1. 用于疑问句, 表选择
2. 用于否定句, 表并列（肯定句用and）
|
|
B、1. Which do you like better, apples, __ pears?
A. and B. but C. or
2. Now we have no time _____ money.
A. so B. and C. or
3.Christine, Aileen _____ (和) I are good friends. Study hard, ______ (否则)you’ll fall behind.
4. Are you coming by bus ____(或者) on foot?
and 和 or 都可以在祈使句中使用.
and 通常是比较好的结果;
or 则表示不愉快或不理想的结果.
|
|
C、1. Try your best __ you’ll make more progress.
A. and B. but C. or
2. Don’t lose heart, __ you’ll lose all.
A. and B. so C. or
adj.比 + and + adj.比 表示越来越…
|
|
D、1. It’s getting warmer __ warmer.
A. and B. but C. or
A or B 和 not A but B 结构作主语时，谓语动词要使用就近原则。
|
|
2. He or the twins __ the USA.
A. comes from B. come from C. is from
3. Not Tom but I ___ going to give the talk.
A. am B. is C. are
