时间: 2025-04-24 15:51:49
美: ['kwɑntəti]
英: ['kwɒntɪtɪ]
n. 量,数量;大量;总量
最后更新时间:2025-04-24 15:51:49
词源分析:'Quantity' 源自拉丁语 'quantitas', 由 'quantus'(意为“多少”)派生而来,后缀 '-ity' 表示状态或性质。
历史背景:该词首次使用的记录可以追溯到中世纪的拉丁文文献,在数学和哲学领域中被广泛使用。
课本:在**的中学教材中,'quantity' 通常出现在数学和科学课程中;在牛津和美国的教材中,例如《Oxford English Dictionary》和《American Heritage Dictionary》,该词常出现在初中到高中阶段的数学和科学类书籍中。
正式与非正式语境:
特殊场合:
The quantity of water in the reservoir has decreased significantly.
水库中的水量显著减少了。
She ordered a large quantity of books for her new class.
她为她的新班级订购了一大批书籍。
The recipe calls for a specific quantity of sugar.
这个食谱需要特定数量的糖。
In economics, the quantity supplied can affect the market price.
在经济学中,供应量可以影响市场价格。
The teacher emphasized the importance of quantity over quality in this assignment.
老师强调了在这个作业中数量比质量更重要。
*. The quantity of waste produced by the factory is alarming.
工厂产生的废物数量令人担忧。
We need to measure the quantity of air in the balloon.
我们需要测量气球中的空气量。
The project requires a substantial quantity of materials.
这个项目需要大量的材料。
同义词:
微小差异:'amount' 更常用于抽象或不可数的概念,而 'volume' 通常指具体的物理量。
反义词:
微小差异:'scarcity' 侧重于可用资源的缺乏,而 'insufficiency' 更强调具体需求未被满足的状态。
音标记忆法:
词根记忆法:
通过这种方式,学*者不仅可以掌握 'quantity' 的含义和用法,还能在实际交流中灵活运用该词。
[N-VAR] A quantity is an amount. 数量
例:...a small quantity of water.…少量的水。
[N-UNCOUNT] Things that are produced or available in quantity are produced or available in large amounts. 大量
例:After some initial problems, acetone was successfully produced in quantity.解决了最初的一些问题后,成功地生产出了大量丙酮。
[N-UNCOUNT] You can use quantity to refer to the amount of something that there is, especially when you want to contrast it with its quality. (尤指相对于质量而言的) 数量
例:...the less discerning drinker who prefers quantity to quality.…重量不重质、识别力较差的饮酒者。
[PHRASE] If you say that someone or something is an unknown quantity, you mean that not much is known about what they are like or how they will behave. 未知量; 未知数
例:She had known Max for some years now, but he was still pretty much an unknown quantity.她现在认识马克斯也好几年了,但是他仍然是个大大的未知数。