#ELEMENTARY RULES OF USAGE
##1.From the possessive singular of nouns by adding’s.
- 直接加
's构造所有格，也不用管最后的辅音Charles’s friend
Burns’s poems
the witch’s malice - 例外：古代的专有名词的所有格(不包括Jesus’)
Moses’Laws—->the laws of Moses
- 不定代词(indefinite pronouns)同样加
's构造 - 不要混淆
its和it's
##2.In a series of three or more terms with a single conjunction,use a comma after each term except the last.
- 连续的几个词，除了最后一个词，前面的都要加
,Thus write red,white,and blue
gold,silver,or copper
He opened the letter,read it,and made a note of its contents. - 作为公司名，倒数第二个单词后面的
,也要省略Little,Brown and Company
Donaldson,Lufkin & Jenrette
##3.Enclose parenthetic expressions between commas.
- 在两个
,之间放置插入语 - 如果插入语不怎么影响句子流，则两个
,可以省略，但是绝对不要省略一个，而留下另一个 - 日期经常含有插入语
February to july,1992
April 6,1986
Wednesday,November 14,1990 - 比较好的写法是用单词分割数字而不用
,6 April 1988
- 呼语(direct address)中的名字和头衔，是插入语
If,Sir,you refuse,I cannot predict what will happen. Well,Susan,this is a fine mess you are in.
- etc.,ie.,and e.g.和名字后面的学位缩写，头衔缩写