| 单词 | 逗号 |
| 释义 | 〔period〕A group of digits separated by commas in a written number.数字：书面数字中一个中间用逗号隔开的数字组〔who〕The traditional rules that determine the use ofwho and whom are relatively simple: who is used for a grammatical subject, where a nominative pronoun such as I or he would be appropriate, andwhom is used elsewhere. Thus, we writeThe actor who played Hamlet was there, sincewho stands for the subject of played Hamlet; andWho do you think is the best candidate? where who stands for the subject of is the best candidate. But we writeTo whom did you give the letter? sincewhom is the object of the preposition to; andThe man whom the papers criticized did not show up, sincewhom is the object of the verb criticized. ? Considerable effort and attention are required to apply the rules correctly in complicated sentences.To produce correctly a sentence such asI met the man whom the government had tried to get France to extradite, we must anticipate when we writewhom that it will function as the object of the verb extradite, several clauses distant from it.It is thus not surprising that writers from Shakespeare onward should often have interchangedwho and whom. And though the distinction shows no signs of disappearing in formal style,strict adherence to the rules in informal discourse might be taken as evidence that the speaker or writer is paying undue attention to the form of what is said, possibly at the expense of its substance.In speech and informal writingwho tends to predominate over whom; a sentence such asWho did John say he was going to support? will be regarded as quite natural, if strictly incorrect. By contrast, the use ofwhom where who would be required, as inWhom shall I say is calling? may be thought to betray a certain linguistic insecurity. ? When the relative pronoun stands for the object of a preposition that ends a sentence,whom is technically the correct form: the strict grammarian will insist onWhom (not who ) did you give it to? But grammarians since Noah Webster have argued that the excessive formality ofwhom in these cases is at odds with the relative informality associated with the practice of placing the preposition in final position and that the use of who in these cases should be regarded as entirely acceptable. ? The relative pronounwho may be used in restrictive relative clauses, in which case it is not preceded by a comma, or in nonrestrictive clauses, in which case a comma is required.Thus, we may say eitherThe scientist who discovers a cure for cancer will be immortalized, where the clausewho discovers a cure for cancer indicates which scientist will be immortalized, orThe mathematician over there, who solved the four-color theorem, is widely known, where the clausewho solved the four-color theorem adds information about a person already identified by the phrase the mathematician over there. ? Some grammarians have argued that onlywho and not that should be used to introduce a restrictive relative clause that identifies a person. This restriction has no basis either in logic or in the usage of the best writers;it is entirely acceptable to write eitherthe man that wanted to talk to you or the man who wanted to talk to you. ? The grammatical rules governing the use ofwho and whom apply equally to whoever and whomever. See Usage Note at else ,that ,whose 确定用法的传统规则who 和 whom 相对简单： who 语法上用作主语，同 I 或 he 等主格代词的位置相同， 而whom 用于别处。 这样，我们写The actor who played Hamlet was there （演哈姆雷特的演员在那边）， 因此who 代表的是 played Hamlet 的主语。 在句子Who do you think is the best candidate? （你认为谁是最好的候选人?）中 who 代表 is the best candidate 的主语。 但是我们说To whom did you give the letter? （你把信给谁了?）， 因为whom 是介词 to 的宾语； 在句子The man whom the papers criticized did not show up, （报纸上批评的那个人没有来）， 因为whom 是动词 criticized 的宾语 。在复杂的句子里，正确应用这些规则需要相当的努力和注意。正确地造出如I met the man whom the government had tried to get France to extradite （我遇到了政府曾努力让法国引渡的那个人）这样的句子， 在写whom 之前我们必须预知它将作动词 extradite 的宾语， 尽管两个词离得很远。这也就难怪自莎士比亚以来的作家经常把who 和 whom 交换使用了。 尽管在正式文体中两者区别仍然存在，但如果在非正式的交谈中严格地遵守这些规则会被认为说话者或作者可能不顾内容而过分注视说话的形式。在口语和非正式书面语中，who 趋向于代替 whom; 人们会认为象Who did John say he was going to support? （约翰说他将支持谁?）这样句子很自然，尽管严格来说它是不正确的。 相反，在应该用who 的地方用 whom 则显出一种语言上的不稳定， 如Whom shall I say is calling? （我说是谁在打电话?）。 当关系代词替代句尾的介词宾语时，whom 在理论上是正确的形势： 严格的语法坚持Whom （而不是 who ) did you give it to?（你把它给谁了？） 但从诺·韦伯斯特以来的语法学家认为whom 在这种情况下过分正式，而把介词放在句尾相对来说又不正式，这就有了矛盾，所以在这种情况下用 who 完全可以接受。 关系代词who 可以用在限定关系从句中，前面不要加逗号， 也可用在非限定关系从句中，则需要加逗号。所以我们既可以说The scientist who discovers a cure for cancer will be immortalized （发现治愈癌症的方法的科学家将会因此而不朽）， 在此处从句who discovers a cure for cancer 指这样的科学家将会不朽， 也可以说The mathematician over there, who solved the four-color theorem, is widely known （在那边的数学家非常出名，他解决了四色定理）， 从句who solved the four-color theorem 给已经由短语 the mathematician over there 确定了的人增加了一些有关他的信息。 有些语法学家认为只有who 而不是 that 可以连接表示人的限定性关系从句。 这种限制在逻辑上没有根据，在最优秀作家的用法中也未有根据；无论说the man that wanted to talk to you （想要跟你说话的那个人）或 the man who wanted to talk to you 都是完全可以接受的。 有关who 和 whom 的语法规则同样适用于 whoever 和 whomever 参见 else,that,whose〔but〕Traditional grammarians have worried over what form the pronoun ought to take whenbut is used to indicate an exception in sentences such as No one but I (or No one but me ) has read it. Some have argued thatbut is a conjunction in these sentences and therefore should be followed by the nominative formI. However, many of these grammarians have gone on to argue somewhat inconsistentlythat the accusative formme is appropriate when the but phrase occurs at the end of a sentence, as inNo one has read it but me. While this treatment of the construction has a considerable weight of precedent on its sideand cannot be regarded as incorrect,a strong case can be made on grammatical grounds for treating this use ofbut as a preposition. For one thing, ifbut were truly a conjunction here, we would expect the verb to agree in person and number with the noun or pronoun followingbut; we would then sayNo one but the students have read it. What is more, ifbut were a true conjunction here we would not expect that it could be moved to the end of a clause, as inNo one has read it but the students. Note that we cannot use the conjunctionand in a similar way, saying John left and everyone else in the class in place of John and everyone else in the class left. These observations suggest thatbut is best considered as a preposition here and followed by accusative forms such asme and them in all positions: No one but me has read it. No one has read it but me. These recommendations are supported by 73 percent of the Usage Panel when thebut phrase precedes the verb and by 93 percent when thebut phrase follows the verb. · But is redundant when used together with however, as in But the army, however, went on with its plans; one or the other word should be eliminated. ·But is generally not followed by a comma. Correct written style requiresKim wanted to go, but we stayed, not Kim wanted to go, but, we stayed. · But may be used to begin a sentence at all levels of style. See Usage Note at and ,cannot ,doubt ,however ,I 1传统的语法学家考虑当but 用于表示例外的意思时应该用什么形式的代词，比如 No one but I （或者 No one but me ) has read it 。 有人认为but 在这种句子中是个连词， 因此应该使用主格I。 然而许多语法学家接下来的讨论有些不一致，即当but 短语出现在句子末尾时用宾格 me 比较合适， 如No one has read it but me（除我以外没有人读过它）。 同时这种结构前置处理的重要性是值得考虑的，并且不会被认为是不正确的，一个有力的例子在语法范畴内，认为but 在这里作介词使用。 首先如果but 在此真是一个连词的话， 我们会期望同名词或代词在人称和数上保持一致的动词跟在but 后面； 我们会说No one but the students have read it（除学生以外没有人读过它）。 再者，如果but 在此真是连词的话，我们不希望它被放在句子末尾， 如在句子No one has read it but the students 中。 注意我们不以类似的方式来使用连词and ，说 John left and everyone else in the class 来代替 John and everyone else in the class left。 这些发现表明but 在此最好被当作介词， 在任何位置后面都应跟宾格形式如me 和 them ： No one but me has read it. No one has read it but me（除了我没人读过它）。 当but 短语放在动词之前时，有百分之七十三的用法专题使用小组成员支持这些提议； 而当but 短语放在动词之后时，得到百分之九十三的小组成员的支持。 But 在同 however 一起使用时是多余的，如 But the army, however, went on with its plans； 这两个词必须去掉其中一个。But 通常后面不加逗号。 正确的写法是Kim wanted to go, but we stayed, 而不是 Kim wanted to go, but, we stayed 。 But 可以放在所有文体标准的句子开头 参见 and,cannot,doubt,however,I1〔because〕A traditional rule holds that the constructionthe reason is because is redundant, and should be avoided in favor of the reason is that. The usage is well established, however, and can be justified by analogy to constructionssuch asHis purpose in calling her was so that she would be forewarned of the change in schedule or The last time I saw her was when she was leaving for college. All three constructions are somewhat less than graceful, however. ·Whenbecause follows a negated verb phrase, it should be preceded by a comma when thebecause clause explains why the event did not occur. He didn't marry her, because she was frivolous means roughly, "Her frivolity was his reason for not marrying her.”When no comma is used, thebecause clause is understood as part of what is being negated. He didn't marry her because she was frivolous means roughly, "His reason for marrying her was independent of her frivolity.”See Usage Note at as 1传统的原则认为结构the reason is because 太累赘，应避免，而赞同使用 the reason is that 。 这种用法被广泛地接受，并可以用类似的结构证明是正确的，如他 呼唤她 的目的是以便 她能预先知道时间安排的改变 ，或者 最近 一次 我看见她是 当 她正要去学院时。 然而所这三种结构都有不够完美的地方。当because 跟着一个否定动词短语时， 该在它前面加一个逗号来表示这个because 从句解释的是为什么这件事 没有 发生。 他不娶她，因为她很轻浮。 粗略的意思是， “她的轻浮是他不娶她的原因。”当没有用逗号时，这个because 从句被理解为被否定的部分。 他不娶她不是因为她轻薄， 粗略的意思是， “他和她结婚的原因与她的轻薄无关。” 参见 as1〔open〕Designating a method of punctuation in which commas and other marks are used sparingly.少用标点符号的：在不引起混淆的情况下可能时省略逗号和其他符号的〔close〕Marked by more rather than less punctuation, especially commas.大量使用标点符号的：由多个而不是少数几个标点标记的，尤其是逗号〔whatever〕Bothwhatever and what ever can be used in sentences such as Whatever (or What ever ) made her say that? Critics have occasionally objected to the one-word form,but it is supported by extensive precedent in reputable writing.The same is true of the formswhoever, whenever, wherever, and however when these expressions are used similarly. In adjectival uses only the one-word form is used:Take whatever (not what ever ) books you need. ? When a clause beginning withwhatever is the subject of a sentence, no comma should be used: Whatever you do is right. Otherwise, a comma may be used:Whatever you do, don't burn the toast. ? When the phrase preceding a restrictive clause is introduced bywhichever or whatever, that should not be used in formal writing. It is regarded as incorrect to writewhatever book that you want to look at; one should write insteadWhatever book you want to look at will be sent to your office or Whichever book costs less (not that costs less ) is fine with us. See Usage Note at however ,that whatever 和 what ever 这两个词都可用在例如 Whatever （或 What ever ) made her say that?（究竟是什么使得她说那样的话?） 这样的句子里。 批评家们经常反对单一词形，但有声望作品的大量先例却支持了单词形式。同样地，当whoever, whenever, wherever 及 however 这些表述被用于类似情况时，其情形也是如此。 用作定语时只用单词形式：Take whatever （不是 what ever ） books you need。（拿那些你要的书） ？ whatever 为句首的从句作句子主语时，不能用逗号： Whatever you do is right（无论你做什么都是对的）。 在其他情况可以用逗号：Whatever you do, don't burn the toast（不管你做什么，不要烤糊了吐司） ? 当先于一限定性从句的短语是由whichever 或 whatever引入时， that不能用在正式文体中。 这样的句子：whatever book that you want to look at（无论哪本你想看的书） 是被看作不正确的； 相反应该是Whatever book you want to look at will be sent to your office（你想看的任何一本书都将会送到你的办公室去） 或者 Whichever book costs less （不是 that costs less ) is fine with us（花费少一些的书比较适合我们） 参见 however,that〔quibble〕an editor who niggled about commas;对逗号吹毛求疵的编辑；〔that〕The standard rule isthatthat should be used only to introduce a restrictive (or "defining") relative clause, which serves to identify the entity being talked about;in this useit should never be preceded by a comma.Thus, we sayThe house that Jack built has been torn down, where the clausethat Jack built tells which house was torn down, orI am looking for a book that is easy to read, wherethat is easy to read tells what kind of book is desired. Onlywhich is to be used with nonrestrictive (or "nondefining") clauses, which give additional information about an entity that has already been identified in the context;in this use,which is always preceded by a comma. Thus, we sayThe students in Chemistry 10 have been complaining about the textbook, which (not that ) is hard to follow. The clausewhich is hard to follow does not indicate which text is being complained about; even if it were omitted,we would know that the phrasethe textbook refers to the text in Chemistry 10. The use ofthat in nonrestrictive clauses like this, though once common in writing and still frequent in speech,is best avoided in formal style. ·Some grammarians have argued that symmetry requires thatwhich should be used only in nonrestrictive clauses, asthat is to be used only in restrictive clauses. Thus, they suggest that we should avoid sentences such asI need a book which will tell me all about city gardening, where the clausewhich will tell me all about city gardening indicates which sort of book is needed. Such use ofwhich is useful where two or more relative clauses are joined by and or or, as inIt is a philosophy in which the common man may find solace and which many have found reason to praise. Which is also preferred to introduce a restrictive relative clausewhen the preceding phrase itself contains athat, as inI can only give you that which I don't need (not that that I don't need ) or We want to assign only that book which will be most helpful (preferred tothat book that will be most helpful ). · That may be omitted in a relative clause when the subject of the clause is different from the referent of the phrase preceding the clause. Thus, we may say eitherthe book that I was reading or the book I was reading, where the subject of the clause (I ) is not the referent of the phrase the book. Omission ofthat in these cases has sometimes been described as incorrect, but the practice is extremely common and has ample precedent in reputable writing. ·There have also been occasional objections to the omission ofthat in its use to introduce a subordinate clause, as inI think we should try again. But this usage is entirely idiomatic and is in fact favored with some of the verb phrases that can introduce such clauses:thus, one would more normally write 标准规则中，that 应只被用于引导限定性（或“确定的”）关系从句， 这些从句用于明确正被谈论的实体；在这种情况下，前面决不能有逗号。因此，我们说杰克建的房子已经拆毁了 ， 在这里，从句杰克所建的 指明哪幢房子被拆毁了， 或者我正在找一本易读的书 ， 在这里，易读的 指明哪类书是需要的。 只有which 用于非限定性（或“不确定的”）从句中， 为已经在上下文中定义的实体提供附加信息；在此用法中，which 之前总有逗号。 因此，我们说化学10班的学生一直在抱怨这课本，实在 （不是 that ) 是太难懂了 。 从句which is hard to follow 并不指明哪一课本被抱怨； 即使它被省略，我们也知道the textbook 指化学10班的课本。 That 象这样用于非限定性从句中， 虽然在写作中曾很普遍而且在口语中依然频繁出现，但在正式文体中最好避免使用。一些语法学家认为对称性要求which 应只用于非限定性从句中， 就象that 只用于限定性从句中。 因此，他们建议我们应该避免诸如我需要一本关于城市园艺的书 这样的句子， 这里从句which will tell me all about city gardening 指明需要何种书。 当两个或多个关系从句被and 或 or 连接时， which 的这种用法很有用， 如是哲学使普通人找到慰藉并使许多人有理由去称颂。 Which 也用作引导限定性关系从句，在当前置短语中含有that 时， 如我只能给你我不需要的东西 （不是 that that I don't need )或 我们只想分发那本最用的书 （好于that book that will be most helpful )。 当从句主语与从句前短语所指不一致时，that 在关系从句中可以省略。 因此，我们可以说the book that I was reading 或者 the book I was reading 。 在这里，从句主语(I )和短语 the book 的主语不同。 在这些情况下，that 的省略有时被认为是错误的， 但是这在实际中极普遍而且在规范写作中有充分的先例。对于that 用于引导从句时被省略偶然持有异议， 如在我认为我们应该再试一次 中。 但这种用法完全符合语法而且实际上有一些引导这样从句的短语支持；因此，可以正常应用 |
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