Ron 关于“Comma + and/but 后面是否必须接完整句子”的清晰解释

brfmzbjz

在分析SC PREP2012 58题的时候，看到manhattan 的帖子里面讨论到 comma + and/but +不完整的句子是否作为一个错误点的讨论：
http://www.manhattangmat.com/forums/vikings-t16237.html

在跟帖中 Ron 贴出了之前对这个问题的详细解释：
http://www.manhattangmat.com/forums/post70164.html#p70164

简单来说， Ron 表示
- 标点符合不会成为GMAT的考察点，Comma导致的错误不是因为标点的问题，而是因为往往会带出错误的逻辑/语义或者带出错误的语法形式
- 实际应用中，Comma + and/but 后面接完整的句子 和仅仅接 verb 的情况都有
- Comma + and/but +不完整句子 不应该成为排除选项的唯一原因，这只是一个 general guideline, not a strict rule

详细解释请看链接，enjoy it!

wensisheng

谢谢ls的归纳！

kathrynsheen

好！！！！！！！！！！！

一笑ww谣

一定顶楼主！！！虽然是一年前的帖子了，还是完美解决了我心里纠结了好久的问题~~

GGGGGUO

我的问题！！！！！

camix0624

顶楼主！               

summyzhang

加一个疑问，那如果没有comma , and可以直接接完整句子么
eg. OG12的题目 Joan of Arc turned the tide of English victories in her country by liberating the city of Orleans and she persuaded Charles VII of France to claim his throne
这里and 后面加she 有语法上的错误么

10月一定700

summyzhang 发表于 2017-8-31 17:37
加一个疑问，那如果没有comma , and可以直接接完整句子么
eg. OG12的题目 Joan of Arc turned the tide of  ...

“comma+and/but（fanboys）”后面一定要连接完整句子吗？

不一定！！！
根据曼哈顿论坛https://www.manhattanprep.com/gmat/forums/post70164.html#p70164，
RON回复到：
”MOST IMPORTANTLY ...
PUNCTUATION IS NOT TESTED ON THIS EXAM!
don't bother with "rules" based on punctuation, because (a) gmac doesn't test them, and, more importantly, (b) the vast majority of such "rules" are, well, not actually rules.

the only time you'll want to mind punctuation, at all, is when it actually differentiates grammatical structures: for instance, "no comma + ____ing" is different from "comma + ____ing". but, those kinds of things aren't really punctuation issues -- they are issues concerning the resulting structures. for instance, the example i just mentioned would be a modifier issue, not a punctuation issue.

regarding this whole belief that comma + and/but/etc MUST introduce another complete sentence:
well, sometimes yes, sometimes no.
this "rule" is not really a rule. it's an approximate guideline in most cases, but it's definitely not a strict rule.

* quite often, the comma will be omitted when there are two complete sentences -- if those sentences are short enough to render the comma unnecessary.
since the doors are locked and the windows are latched, we're ready to go.
--> this is fine; there's no reason to separate "the doors are locked" and "the windows are latched" with a comma. indeed, the sentence would become a lot more confusing if you did that.

* also -- again quite often -- a comma will be included even if the structures are not complete sentences, especially if the structures are long enough to make the sentence unreadable without the comma.
【for instance】:
i shut the windows and locked the doors --> this sentence doesn't need any additional punctuation.
i shut the windows so firmly that i would later have trouble opening them, and locked the doors using both the standard locks and the deadbolts -->
these are not complete sentences, but the sentence is still written with the comma because it's absolutely unreadable without the comma. (try it yourself.)
-->>>反推：两独立句子的连接，必须要有什么条件？
查曼哈顿verbal可知，满足以下三个条件之一就可以：
①从属连词（though、because、since等等）

②逗号+fanboys（for,and, nor, but, or, yet, so），逗号可省

③分号


-->>>补充【曼哈顿P100】对于and的用法：
the most common parallelism marker is the word and.
This word always signals parallelism and can be used to connect any two
similar structures, from independent clauses to individual words such as nouns
or adjectives.