个人理解是这样的,comma + and 是连接独立句的必要条件,不是充要条件。
换句话说,IC __ IC (ic=independant clause) 中间只能用comma + FANBOYS
而反过来,并不是说用comma + and链接的都是独立句
gmat 这样的例子很多。千万不要见到comma + and 前后不是独立句就排除。
送几个例句
Sales of wines declined in the late 1980s, but they began to grow again after the 1991 report that linked moderate consumption of alcohol, and particularly of red wine, with a reduced risk of heart disease.
Joachim Raff and Giacomo Meyerbeer are examples of the kind of composer who receives popular acclaim while living, but whose reputation declines after death and never regains its former status.
-- by 会员 yakev6 (2012/12/12 19:09:01)
看看千行137题吧,希望会对你有帮助,我把解释贴出来
but前面有逗号不是应该接独立句子么(Ron):
Q;Hi, I understand the parallelism concept in this exercise, but what I find confusing is the use of "but" after the comma because this usage suggests that we should look for a complete clause rather than a modifier.
A:this “rule” is not really a rule. it's an approximate guideline in most cases, but it's definitely not a strict rule.
often, the comma will be omitted when there are two complete clauses -- if those clauses are short enough to render the comma unnecessary.
also -- again quite often -- a comma will be included even if the structures are not complete clauses, especially if the structures are long enough to make the sentence essentially 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 clauses, but the sentence is still written with the comma, because it's absolutely unreadable without the comma (try it yourself).
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 them will not be hard rules.
the only time you'll want to mind punctuation at all is when it actually differentiates different structures: for instance, “no comma + -ing” is very 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 really a punctuation issue.
千行里 137题的解释
a comma will be included even if the structures are not complete clauses, especially if the structures are long enough to make the sentence essentially unreadable without the comma.这句话Manhattan里也有的具体是第几章我忘了,我以前这问题纠结了好久,因为看过Manhattan以为补出主谓是必需的,现在释然了,不拿它当首要的split了
-- by 会员 090743 (2012/12/12 20:03:49)