1.
Place proper punctuation around nonrestrictive clauses, but do not place punctuation around restrictive clauses.
在非限制性从句中可以使用标点，但在限制性从句中则不可以使用。
2.
the restrictive clause in `Each made a list of the books that had influenced him' limits the books on the list to only those particular ones defined by the clause.
在‘每个人都列出了曾经影响过自己的书’一句中限制性从句只限于将从句指定的那些特殊的书。
3.
Use two commas, not one, to set off a nonrestrictive clause in the middle of a sentence.
用两个逗号，而不是一个，来分隔非限制性从句。
4.
this relative clause is used restrictively.
这个关系从句是用作限制性成分的。
5.
Analysis focused on the non-restrictive clauses in nautical English;
航海英语中非限制性定语从句的分析
6.
A Distinction Between “Which ”and“As”in Non-Restrictive Attributive Clause;
Which与as在非限制性定语从句中的辨异
7.
A Comparative Study of Difference in Japanese and Chinese Nonrestrictive Clauses
日汉非限制性动词定语从句对比研究
8.
Pay attention to the use of commas in the Non-restrictive Attributive Clause.
注意逗号在非限制性定语从句中的用法。
9.
The Comparative Study of Relative Pronoun As, Which & That in Restrictive Attributive Clause;
限制性定语从句中关系代词as,which和that的比较研究
10.
Syntactic Deviations of English Non-finite Clauses by Chinese L2 Learners;
从句法分析看L2英语非限定性分句的习得
11.
They asked for civil rights, for which they had struggled for hundreds of years.
他们要求民权，他们为此奋斗了几百年。(限制性定语从句译为一个后置的并列句。
12.
In defining relative clausesBwhombis also unusual.
在限定性关系从句中也很少用。
13.
Viewing Generative Mechanism of the Verb-copying Sentence from Selectivity and Compulsion
从重动句的选择性与强制性看其句式形成机制
14.
A Pragmatic Account of the So-called “Definite Restriction" of ETS;
英语存在句“确定性限制”的语用解释
15.
B) The earth rotates on its own] axis, which causes the change from day to night.
点评：同样的，前者由非限制性定语从句构成。但在科技文中，你需要将其转换成名词结构。
16.
When a nonrestrictive clause appears at the end of a sentence, place a comma before it and a period after it.
当非限制性成分出现在句末时，在它前面加逗号，后面加句号。
17.
Seeing the Semantene Attvibute of "Bei" Sentence from the Point of Construction Grammar
从句式语法看被字句的句式语义属性
18.
Definiteness of "There+Be" Constructions in English-A Study Based on the BNC Corpus;
英语There+Be句型的限定性研究