| 单词 | not |
| 释义 | not[nɒt]ad. 不, 非, 未【计】 非相关词组:not all thatnot but thatnot thatnot that...but that...not too wellnot too badnot a fewnot reluctantnot onnot without reasonas likely as notas soon as notnot anot a chance not not AHD: [n¼t] D.J. [nKt]K.K. [n$t]adv.（副词）In no way; to no degree. Used to express negation, denial, refusal, or prohibition:不：没有办法；到不了某一个程度。用来表示否定、拒绝或禁止：I will not go. You may not have any.我不会去。你不可以拿语源:1. Middle English 中古英语 2. alteration of naught, nought * see naught naught的变化, nought *参见 naught用法:Care should be taken with the placement ofnot and other negatives in a sentence in order to avoid ambiguity. All elephants are not friendly could be taken to mean either “All elephants are unfriendly” or “Not all elephants are friendly.” Similarly, the sentenceKim didn't sleep until noon could mean either “Kim went to sleep at noon” or “Kim got up before noon.” · In formal writingthenot only . . . but also construction should be used in such a way that each of its elements is followed by a construction of the same type.Instead ofShe not only bought a new car but a new lawnmower, write She bought not only a new car but a new lawnmower; in the second version, bothnot only and but also are followed by noun phrases. · In thenot only construction also is often omitted when the second part of the sentence merely intensifies the first: 为避免意思模糊，在句中放置not 和其他否定词时必须小心： All elephants are not friendly 可被理解为“所有的大象都不友好”或“并不是所有的大象都友好”。 与此相似，句子Kim didn't sleep until noon 即可以被理解为“科姆中午去睡觉”或“科姆中午前起床”。 在正式写作中,not only…but also 结构应这样用： 每一个成分后都跟一个相同形式的结构。应把She not only bought a new car but a new lawnmower 写成 She bought not only a new car but a new lawnmower； 在第二个句子里，not only 和 but also 后都跟名词短语。 当第二部分只是强调第一部分时，在not only 结构里 also 通常省略： He not only wanted the diamond but wanted it desperately. See Usage Note at &b{only} 他不仅想要钻石，而且想要得要命 参见 only NOT NOT AHD: [n¼t] D.J. [nKt]K.K. [n$t]n.（名词）A logical operator that returns a false value if the operand is true and a true value if the operand is false.非：当算子为真返回假值而当算子为假返回真值的逻辑运算符 |
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