英语并列句 and
已三句并列为例，前面连个分句之间就可以直接省略，最后一个分句需要加and。
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.连词主要可分为两类：并列连词和从属连词.并列连词用来连接平行的词、词组和分句.如：and,but,or,nor,so,therefore,yet,however,for,hence,as well as,both…and,not only…but also,either…or,neither…nor,(and)then等等.
并列连词引导两个并列的句子.
1) and 与or
判断改错：
(错) They sat down and talk about something.
(错) They started to dance and sang.
(错) I saw two men sitting behind and whisper there.
(对) They sat down and talked about something.
(对) They started to dance and sing.
(对)I saw two men sitting behind and whispering there.
解析：
第一句：and 连接两个并列的谓语,所以 talk 应改为 talked.
第二句：and 连接两个并列的动词不定式,第二个不定式往往省略to,因此sang 应改为 sing.
第三句：and 连接感观动词saw 后面的用作的宾补的两个并列分词结构,因此whisper应改为whispering.
注意：and 还可以和祈使句或名词词组连用表示条件.（or也有此用法）
Make up your mind,and you'll get the chance.
= If you make up your mind,you'll get the chance.
One more effort,and you'll succeed.
= If you make one more effort,you'll succeed.
2) both …and 两者都
She plays (both) the piano and the guitar.
3) not only…but (also),as well as不但…而且）
She plays not only the piano,but (also) the guitar.
注意：not only… but also 关联两个分句时,一个分句因有否定词not 而必须倒装.
Not only does he like reading stories,but also he can even write some.
4) neithe…nor 意思为"既不……也不……"谓语动词采用就近原则,与nor后的词保持一致.
Neither you nor he is to blame.
判断方法是： materials and research methods 中 materials是负数，肯定不可能是与research并列，如果并列应该是单数，并且通过意思也是可以判断的
第一个句子是简单句
现在分词
作状语
可看作结果状语
答案绝对是leaving
与逻辑主语是主动关系
有逗号
没and
一般用分词短语
作状语
，如果有and
则是并列句
用句子表达
第二句
也是现在分词作状语
可看作
伴随状语
答案是crying
一般情况下
必须有逗号
这两个句子都是简单句
表示并列和递进关系时用and
并列句的定义
由并列连词连接的两个或两个以上独立分句的句子就是并列句。例如：
I turned on the TV and we sat down and watched it. 我开了电视机后，我们就坐下来看电视节目。
You may go with us, or you may stay at home. 你既可以跟我们一起去也可以呆在家里。
It was getting late; we had to go back. 不早了，我们只得回去。
并列连词and(表示并列附加关系), not only…but also (连接两个并列分句时，前一个句子倒装，但侧重点在后一个并列句上)。例如：
Promote physical culture and build up the people’s health.发展体育运动，增强人们体质。
This article is well-written and you’d better read it. 这篇文章写得很好，你最好看看。
Not only is he himself interested in computer but also his son is beginning to show an interest in it.不仅他对电脑感兴趣，而且他的儿子也开始对电脑感兴趣。
Not only everything he had had taken away from him, but also his German citizenship was taken away from him. 不仅他所有的一切被剥夺，而且就连他的德国国籍也被剥夺了。
