逗号使用原则总结

（一）逗号与句子

1.在一个句子里,

A。 同一个主语有两个动词,逗号的使用如下:

S + V1 and V2 (VI 与V2平行) 这里在V2前面不能加逗号而且V2前不加再加S或其代词.

B。同一个主语有三个动词，逗号的使用如下：

S+V1，V2 and V3 (V1,V2,V3平行）

2.逗号在句子间的使用

A。两个句子并列的情况下,逗号使用如下:

句子1, and 句子2.

B。在三个句子并列的情况下，逗号使用如下：

句子1，句子2，and 句子3。

3. 在1的情况下,如果V2前有插入语的话,应该用逗号隔开,形式如下:

S+V1 and, 插入语,V2

TS-Q38: The normative model of strategic decision-making suggests that executives examine a firm’s external environment and internal conditions, and in using the set of objective criteria they derive from these analyses, can decide on a strategy.

A. conditions, and in using the set of objective criteria they derive from these
analyses, can decide

B. conditions, and they use the set of objective criteria derived from these analyses in deciding

C. conditions and, in using the set of objective criteria derived from these analyses, deciding

D. conditions and, using the set of objective criteria derived from these analyses, decide

E. conditions and, in their use of the set of objective criteria they derive from these

key is D

除了C.D外,其他选项应该像B那样补出主语来.

（二）逗号与形容词

A词，B词

A词 and B词

以上两种形式当A。B词的语义类别相同的时候是等价的，否则不等价。

例子：the official financial help; a concrete and glass factory or a concrete, glass factory

OG37. While some academicians believe that business ethics should be integrated into every business course, others say that students will take ethics seriously only if it would be taught as a separately required course.
    

(A)  only if it would be taught as a separately required course
    

(B)   only if it is taught as a separate, required course
    

(C)  if it is taught only as a course required separately
    

(D)  if it was taught only as a separate and required
    course

(E)   if it would only be taught as a required course,
     separately
   

key is B

暂时总结这么的多，有不足之处请指正，希望NN们多补充哈。谢谢

key is B

暂时总结这么的多，有不足之处请指正，希望NN们多补充哈。谢谢

actually sometimes the misuse of comma is not a deciding mistake