请教一个关于逗号的问题~~

eva808

大全169

1.        Because the enemy’s new ship is the quietest and it is therefore the most elusive submarine, it is being increasingly viewed by the military as a threat to security.

(A) and it is therefore the most elusive submarine, it is being increasingly viewed

(B) it is therefore the most elusive of submarines, and it has increased the view

(C) and therefore the most elusive submarine, it is being increasingly viewed

(D) and therefore it is the most elusive of submarines, there is an increasing view（C）

(E) therefore being the most elusive of submarines, it is increasingly viewed

大全的解释说A不对的原因是and前面缺少逗号

我认为这里可以不要加逗号,因为and前后的意思是一致的~~~

请问大牛~~什么情况下需要用逗号来隔开呢?

大牛表鄙视偶~~

liubin1987

我觉得是不是这里的and 前后连接着的都是完整的句子,所以该分开啊?

呵呵,猜测下.还是等大N吧

 

eva808

以下是引用liubin1987在2007-2-8 20:47:00的发言：

我觉得是不是这里的and 前后连接着的都是完整的句子,所以该分开啊?

呵呵,猜测下.还是等大N吧

 

谢谢~~~请问能不能举出几个例子捏?

思故

先声明本人现在还不是大牛，只是碰巧复习到此---

1。白勇的省略结构中的并列结构中的省略：两句子并列，第一个句子含有be动词或者become，第二个句子的be动词或者become必须省略。

2。二楼的判断是正确的“选项A的确是用and连接了两个句子”， 而白勇书上标点符号一节中：

逗号不能连接两个或三个句子，修改办法中 3）由逗号和连词同时连接：句子1，and 句子2

一起努力吧！若解释有帮助的话，也请帮我看看发表的另一有关and和逗号的，谢谢啊~

思故

刚才自觉得解释不到位，总算找到例子了并有OG的解释来担保---

OG135. Intar, the oldest Hispanic theater company in New York, has moved away from the Spanish classics and now it draws on the works both of contemporary Hispanic authors who live abroad and of those in the United States.

(A) now it draws on the works both of contemporary Hispanic authors who live abroad and of

(B) now draws on the works of contemporary Hispanic authors, both those who live abroad and those who live

(C) it draws on the works of contemporary Hispanic authors now, both those living abroad and who live

(D) draws now on the works both of contemporary Hispanic authors living abroad and who are

(E) draws on the works now of both contemporary Hispanic authors living abroad and those

In choices A and C, it intrudes between the halves of the compound verb has moved... and [now] draws to introduce a new grammatical subject, thereby creating a run-on sentence:

the inclusion of it requires a comma after classics to set off the new independent clause. The placement of now is awkward in C, and the construction living abroad... and who is not parallel in C and D. Misplacement of words creates ambiguity in E: for example, the positioning of both immediately before the phrase describing the authors suggests that there are only two contemporary Hispanic authors living abroad. The logical word placement and parallel phrasing of B, the best choice, resolve such confusions.

eva808

以下是引用思故在2007-2-9 14:35:00的发言：

先声明本人现在还不是大牛，只是碰巧复习到此---

1。白勇的省略结构中的并列结构中的省略：两句子并列，第一个句子含有be动词或者become，第二个句子的be动词或者become必须省略。

2。二楼的判断是正确的“选项A的确是用and连接了两个句子”， 而白勇书上标点符号一节中：

逗号不能连接两个或三个句子，修改办法中 3）由逗号和连词同时连接：句子1，and 句子2

一起努力吧！若解释有帮助的话，也请帮我看看发表的另一有关and和逗号的，谢谢啊~

当然逗号是不能连接两个以上的句子,但是不代表and不可以啊~~~晕晕

思故

eva808MM先不要急，GMAT的语法就是这样。请你再看看我找到的OG的解释，或许可以被说服。在不行，如果你多看看讨论可以发现SC中不惯用and连接两个独立句，而是倾向“，and”。

LOUI1121

is the answer E??
all the options looks kinda awkard.

liubin1987

我没记错的话是C

Mayanist

大全169
1.    Because the enemy’s new ship is the quietest and it is therefore the most elusive submarine, it is being increasingly viewed by the military as a threat to security.

(A) and it is therefore the most elusive submarine, it is being increasingly viewed

(B) it is therefore the most elusive of submarines, and it has increased the view

(C) and therefore the most elusive submarine, it is being increasingly viewed

(D) and therefore it is the most elusive of submarines, there is an increasing view（C）

(E) therefore being the most elusive of submarines, it is increasingly viewed

大全的解释说A不对的原因是and前面缺少逗号

我觉得是否可以认为在A的情况下，and it is therefore the most elusive submarine, 应该作为插入语，否则it is being increasingly viewed by the military as a threat to security. 显得不舒服，特别的是it的指代不清晰。加上逗号之后表示插入部分可被省略，这样it可清晰地指代 the enemy’s new ship.