有一个SC问题困惑我好久，请教在美国参考高考的同学们：

清零

今天阅读了一个李开复的帖子： "Many people followed the news, and sent me their condolences about my recent predicament. ".  

如果是我我就可能会写为："Many people followed the news and sent me their condolences about my recent predicament. " (without the comma)

我发现在美国参加高考的同志，就是坚持认为李开复的用法是对的。是不是GMAT的语法准则跟SAT有所差别？或者矛盾？之前有一个朋友帮我修改Essay，就采用了用逗号的用法。

但是 Manhattan GMAT Sentence Correction 4th Edition: 如下原话：

Do not use a commna before 'and" to seperate two verbs that have the same subject. Either dliminate the comma or add a subject to the second verb,creating a second main clause.
Wrong: Earl walked to school, and later ate his lunch.
Right: Earl walked to school and later ate his lunch.
Right: Earl walked to schoo, and he later ate his lunch.

大家发言解释一下？多谢

断臂小山

很多GMAT考试prefer的用法，在口语中是不同的。

pumpkin

GMAT语法的关键是“比较”。很多时候没啥绝对的对或者错。另外，曼哈顿也不是GMAC，也不见得没个说法都是那么全面正确。。。

李开复的那个句子是没啥问题的。有个逗号没个逗号无所谓。