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内容摘自《The Elements of Style (Fourth Edition)》，根据自己的理解写的，如有错误烦请指正。
Page 4 从句之前的逗号
从句作非限定用法，用于补充主语时，需要加逗号。
The audience, which had at first been indifferent, became more and more interested.
这句话可以拆分成两个句子：
The audience was at first indifferent. Later it became more and more interested.
与之对应，用于限定时，从句前面不用加逗号
People who live in glass houses shouldnt’t throw stones.
Page 5 不同连接词对应不同的逗号
当两个子句对应同一个主语时，若使用but表示转折关系，前面要加逗号，但是and就不用.
I have heard the arguments, but am still uncovinced.
He has had several years’ expericnce and is thoroughly competent.
Page 6 分号和连接词
如果没有连接两个子句的连接词，那么更应该使用分号将他们隔开
It is nearly half past five; we cannot reach town before dark.
上面的句子可以不经修改直接拆成两个独立的句子.
或者使用连接词and，用逗号连接
It is nearly half past five, and we cannot reach town before dark.
但是仍要注意，如果使用副词（accordingly, besides, then, therefore, thus）而不是连接词的话，仍是需要使用分号分隔的
I had never been in the place before; besides, it was dark as a tomb.
Page 6 冒号的使用
不要用冒号将动词与补语分开来（如下句中的requires a knife）
错误：Your dedicated whittler requires: a knife, a piece of wood, and a back proch.
正确：Your dedicated whittler requires three props: a knife, a piece of wood, and a back porch.
不要用冒号将介词和后面的宾语分开来（如下句中的 grows from theory）
错误：Understanding is that penetrating quality of knowledge that grows from: theory, practice, conviction, assertion, error, and humiliation.
正确：Understanding is that penetrating quality of knowledge that grows from theory, practice, conviction, assertion, error, and humiliation.
如果后面的子句是对前面的补充或是解释，可以用冒号连接
But even so, there was a directness and dispatch about animal burial: there was non stopover in the undertaker’s foul parlor, no wreath or spray.
Page 10 （谓语）动词单复数形式
one of the …. 形势，是不用在意’one’的
One of those people who are never ready on time.
但是在使用each, either, everyone, everybody, neither, nobody, someone时谓语动词应当是单数形式
Everybody thinks he has a unique sense of humor.
使用none的时候应该注意表达的意思，如果意思是“没有，没有人..”的话用单数
None of us is perfect.
如果是“不止一个”的含义，那就是复数形式
None are so fallible as those who are sure they are right. 最易犯錯者，莫過於自信正確無誤之人
使用with, as well as, in addition to, except, together with, no less than之类的连接词增加的额外部分，不作为考虑单复数的依据，即只考虑原本的主语就可以了
His speech as well as his manner is objectionable.
Page 13 句子开头的分词短语要与后面主句的主语一致
Walking slowly down the road, he saw a woman accompanied by two children.
如果是要强调是那个woman慢慢走在路上，应该这么写
He saw a waman, accompanied by two children, walking slowly down the road.
错误：Young and inexperienced, the task seemed easy to me. 这里的主语是task，但是前面的短语确实形容me的
正确：Young and inexperienced, I thought the task easy.