extend和expand区别

1、精选课件1extend和expand区别extend:直线状直线状“伸展伸展”，引申，引申“扩展范围、领域扩展范围、领域 等；用于比喻意义时，等；用于比喻意义时，表影响、势力和范围表影响、势力和范围都都 超过目前；超过目前；expand:为最普通用语，主要指物体由于外力或为最普通用语，主要指物体由于外力或 内力的作用而使内力的作用而使面积、体积、数量面积、体积、数量等变等变 大；也可以用于大；也可以用于抽象抽象事物。事物。extend用于具体事物，用于具体事物，expand多是抽象事物。管道设多是抽象事物。管道设施的架设延伸，就用施的架设延伸，就用extend;市场的扩大延伸，就是市场的扩大延

2、伸，就是expand。精选课件2extend vi/vt. 1. 延续，持续（延续，持续（to continue to happen or exist for a certain period of time); The tourist season extends from May till October. 旅游季节从五月延续到十月2. 延长，推延延长，推延（to increase a period of time that has been agreed ,especially in order to finish a job or pay money that you owe)Cant

3、 you extend your visit for a few days? 你们访问的时间不能延长几天吗你们访问的时间不能延长几天吗? 3.扩大；延长扩大；延长建筑或道路等建筑或道路等（to continue for a particular distance or over a particular area)；。 精选课件34. 伸开，舒展伸开，舒展（to stretch out a part of your body) He extended his hand in greeting.他伸出手来表示欢迎。 5. 提供，给予，表示提供，给予，表示（help,sympathy,thanks

4、 etc)(+to) I would like to extend a warm welcome to our visitors. 我想对我们的来访者表示热烈的欢迎6.使竭尽全力使竭尽全力（to make someone use all their strength , intelligence etc,in order to archieve good results)7.延伸，扩大延伸，扩大（if you extend your control,influence etc or if it extends over sth. ,it becomes more powerful)精选课件4e

5、xpand vt./vi 1. 展开展开,张开张开(帆帆,翅等翅等) The eagle expanded its wings. 老鹰展开翅膀。 2. (使使)膨胀膨胀/扩张扩张 Water expands when it freezes. 水结冰时体积膨胀。 A tire expands when you pump air into it. 轮胎打了气就会胀大。3. 扩大扩大,增强增强(to become greater in size,number,or amount,or importance) In ten years the citys population expanded by

6、12%. 十年之中,该城人口增加了百分之十二。Student numbers are expanding rapidly.expand ones words/expand the local airport 扩建机场精选课件54.(使）使）业务业务扩展扩展（if a company ,business etc expands or if someone expands it,they open new shops,factories etc)He is thinking of expanding his business. 他正考虑扩展他的生意。 expanding economy不断发展的经

7、济 The coffee shop may expand into a full restaurant.那家咖啡店将可能扩展成为一家完善的餐馆We have plans to expand into the US market.我们打算扩展业务进入美国市场。5. 增加增加活动量活动量；扩展；扩展活动范围活动范围（to increase the amount or range of an activity)6. 详细说明详细说明(+on/upon) They have expanded my view on the question. 他们已更充分地阐明了我对这个问题的观点。精选课件6expan

8、d/enlarge/widen 可接可接view/mind/knowledge ；knowlege的扩大不是在一个方向上，所以只能用expand/enlarge/widen expand/swell 均可表示膨胀，均可表示膨胀，extend 多指多指(如如meeting/visit/visa/stay)在时空上的延展；在时空上的延展；expand 指范围的扩张指范围的扩张(如如telephone network/knowledge)；enlarge 指扩大物体指扩大物体(如如house/photograph)的尺寸、范围和体积；的尺寸、范围和体积； stretch指身体四肢(如hand/leg

9、/neck 等)的伸展；multiply 指数量的成倍增加； widen 着重指增加某物的宽度精选课件71.Because the company was doing more business it was necessary to_the factory.A).expand B).extend C).increase D).grow由于公司的生意越做越大，因此有必要将工厂(建筑)扩建.2.After some further discussion between Kitty and Tammy about_ the village school system to other communities around Hebe, Kitt