extension什么意思
单词解析
exten，即extend，前面背过，不重复介绍，大家可以先去复习一下~
extend，动词，意思是：扩大、扩展以使某物更大更长，使某事持续更长的时间，使某物伸展开，使延续，给予或提供某物给某人（正式说法），影响到某人或某物，使某人能够发挥全部的才能。
extend 扩大、延伸
d变s的更多例子还有：invasion, pension, explosive, etc.
ion，常见的名词后缀，更多例子还有：proposition, malfunction, deregulation, etc.
extension，名词，意思是：
- 为了使某物更大更长的动作，
- 伸展、延续的事实，
- 共享一个电话号码的分机，
- 电话号码不同但连接同一个总机的电话分机（比如说公司用的），
- 文件的扩展名（比如word文档是doc/docx，音乐是mp3之类的），
- 为了使头发更长而添加的一段假发（注意是为了更长而加入的一段假发，其他类型有不一样的单词），
- 房子或其他建筑物的扩建部分（英式用法，美式英语用addition）。
extension还可以做形容词，意思是：
- 扩展性的（用来形容学生作业，为了支持学生学习而在基础作业之外布置的更难的任务，只可用在名词前）。
- 也可以指学院或大学对校外学生提供课程的（美式用法，英式用extramural）。
虽然意思比较多，其实都是扩充，所以记住extend的扩展意思就好~
学单词，只记住意思可不行，会用才行，小伙伴们可以在评论区造句，我们一起学习哦！我先来：
造句：Our teacher asked us to do an extension activity.
Our teacher asked us to do an extension activity.
Hi, My phone number is xxx-xxxxxxx and the extension number is 9421.
Hi, My phone number is xxx-xxxxxxx and the extension number is 9421.
Extension的英文解释：
- the fact of reaching, stretching, or continuing; the act of adding to something in order to make it bigger or longer
- any of two or more phones in the same house that share the same number, or any of a number of phones connected to a switchboard in a large building such as an office
- the last part of the name of a computer file, which comes after a (.) and shows what type of file it is
- (also hair extension) a long piece of hair that is added to a person's own hair in order to make the hair longer
- (US addition) UK a new part added to a house or other building
- intended to support students' learning by making them try different or more difficult things in addition to their basic work
- (UK extramural) US offered by a university to people who are not studying for a degree there
扩展阅读：
invasion什么意思 pension什么意思 mansion什么意思 expressive什么意思
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