逗号/逗点在中文或英文里是再普通不过的一个标点符号；可是，它的用法在中文和英
里可就不一定相同了。
二、Comma (，) 逗号、逗点
在英文里，逗号的用途有：
* 连接句子里不同的成份
* 分开句子里不同的成份
* 突出句子里的某个成份
* 替代句子里的某个成份
成份指：词、短语(phrase)、子句(clause)等。
连接句子里不同的成份
逗号用在以 and, but, for, nor, or, so, yet 等连接词的两个主要子句
之间：
1. My father is fond of fishing, but my mother prefers hiking. (以 ,but 连
接两个子句)
2. He painted the exterior of the house, and she painted the interior. (以
,and 连接两个子句)
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分开句子里不同的成份
用逗号分开两个以上的并列形容词：(如果并列的形容词之间可加上and,
but等，那就加上逗号；否则不可)
1. That tall, distinguished, good looking fellow. (可写成 He is a tall and
distinguished fellow.)
2.She is a little and old lady. (不可写成 She is a little, old lady.)
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在两个修饰主语的短语之间加上逗号(句短可不加)：
1. While waiting for the bus on that cold rainy night, she started
sneezing. (主语she)
2.At 10 o'clock the bus arrived. (不必写成 At 10 o'clock, the bus
arrived.)
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在 Jr., Sr., Esq., Ph.D., F.R.S., Inc., 等名称之前及后都要加上逗
号(除了所有格的名称):
1. They identified him as Howard R. Williams, Jr., chairman of their board.
(,Jr.,)
2.That is Howard R. Williams, Jr.'s company. (,Jr.'s 后面不可再加逗号)
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在追问句之前加逗号：
1.Do it, won't you? (Do it 是命令语气，won't you?是追问)
2.You know the answer, don't you?
3.It is warm today, isn't it?
(一) (二) (三)
