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Unit 5 Languages Around the World 语言介绍说明文
一、学习目标
依托课本原句掌握语言文化类核心短语，辨析易混短语，熟练用于事物介绍类说明文。
掌握定语从句、现在完成时、评价类固定句型三大语法，区分句式用法，提升说明文语法精度。
深度解析语言类说明文的写作逻辑、分层结构、说明手法，写出条理清晰、语言严谨的介绍类短文。
二、例文整体感知（课本 Reading 原文）
本篇为语言文化类说明文，以英语发展为写作主体，围绕语言构成、演变过程、地域传播、文化影响展开。文章语言严谨、分层清晰，是高中事物介绍类说明文的经典范文。
1、核心重点短语
（1）be made up of 由……组成
课本原句：English is made up of many different languages.
易混辨析
be made up of：侧重整体由多个部分构成（可拆分）；
consist of：同义短语，无被动语态，书面说明文高频互换。
自主仿写：________________________________________
（2）consist of 由……构成；包含
课本原句：The language consists of three main parts.
自主仿写：________________________________________
（3）play an important role in 在……中发挥重要作用
课本原句：English plays an important role in global communication.
易混辨析
play a role in：侧重“发挥作用”，中性通用；
play a part in：完全同义，二者可互换使用。
自主仿写：________________________________________
（4）be different from 与……不同
课本原句：Modern English is quite different from ancient English.
自主仿写：________________________________________
（5）change over time 随时间变化
课本原句：All languages change over time and develop gradually.
自主仿写：________________________________________
（6）communicate with 与……交流沟通
课本原句：We use language to communicate with others.
自主仿写：________________________________________
（7）spread across 传遍；蔓延至
课本原句：English spread across the world quickly.
自主仿写：________________________________________
（8）have a great influence on 对……有巨大影响
课本原句：Cultures have a great influence on language development.
易混辨析（回顾Unit4知识点）
have influence on：侧重思想、文化、语言的潜移默化影响；
be affected by：侧重外界灾害、客观因素的不良影响。
自主仿写：________________________________________
2、核心语法精讲
语法点1：定语从句（that/which 限定性定语从句）
课本原句：English is a language that many people around the world speak.
知识点精讲
that/which 引导定语从句，修饰前面的名词，补充事物特征，让说明内容更具体，说明文核心加分句型。
易错点：先行词为事物时，that/which 可互换；从句必须使用陈述语序。
【课堂小练习】补全句子
English is a language ________ (在全球被广泛使用).
It is a useful tool ________ (帮助我们和外国人交流).
This is the book ________ (能够提升你的语言能力).
语法点2：现在完成时（描述发展变化）
课本原句：English has changed a lot over the years.
知识点精讲
现在完成时用于描述事物从过去到现在的长期发展、演变，常搭配 over the years, in recent years，适配语言、文化类说明文。
易混辨析
一般过去时：只描述过去某一时间的动作，不体现“演变过程”。
【课堂小练习】用所给词正确形式填空
Chinese ________ (become) more popular around the world in recent years.
Many people ________ (start) to learn English as a second language.
Languages ________ (develop) greatly with cultural communication.
语法点3：It is + 形容词 + for sb. to do sth. 评价句型
课本原句：It is important for us to learn a foreign language well.
知识点精讲
万能评价句型，用于评价学习语言的意义、必要性，多用于说明文结尾升华。
易混辨析
It is + 形容词 + for sb. to do：形容事物性质（客观评价，本单元用法）；
It is + 形容词 + of sb. to do：形容人的品质（主观评价）。
【课堂小练习】补全句子
It is necessary for us to ________________ (掌握一门外语).
It is helpful for us to ________________ (多和他人用英语交流).
3、篇章结构 & 写作深度讲解
（1）写作话题解读
文体：事物介绍类说明文
核心写作要素：介绍语言名称与地位 → 语言构成、特点与演变 → 用途、传播与影响力 → 学习价值与个人感悟。
写作要求：语言客观严谨，分层说明，逻辑连贯，避免过多抒情。
（2）说明文三段式标准结构
开头段：总起全文，点明介绍对象，说明语言的整体地位与价值。
主体段（核心）：分层介绍语言的组成、演变、用途、传播与影响，用衔接词分点说明。
结尾段：总结语言的重要性，点明学习该语言的意义，升华主题。
（3）逻辑衔接词（说明文专用）
分层列举：First / Firstly 首先、Besides 此外
因果衔接：As a result 结果
（4）高分写作技巧
句式搭配：基础说明句 + 定语从句 + 现在完成时结合，句式丰富且严谨；
分层说明：借助衔接词分点阐述，条理清晰，是说明文得分关键；
用词规范：使用书面正式词汇，贴合说明文文体风格。
三、综合实战：课堂写作训练
写作任务
写一篇80词左右短文，介绍汉语，内容包含：汉语地位、发展特点、用途以及学习汉语的意义。
【限时写作要求】
时长：10分钟 词数：80词左右
要求：使用本课短语、语法、衔接词；内容完整，逻辑清晰，语言规范。
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
四、拓展句子仿写
仿照句型：sth. be made up of...
仿写：________________________________________
仿照句型：sth. play an important role in...
仿写：________________________________________
仿照句型：sth. change over time
仿写：________________________________________
仿照句型：It is + 形容词 + for us to do sth.
仿写：________________________________________
参考答案 & 参考例句
一、核心重点短语 仿写参考例句
be made up of — Our class is made up of forty students.
consist of — The test paper consists of two main parts.
play an important role in — Reading plays an important role in English learning.
be different from — My learning method is different from yours.
change over time — People’s lifestyles change over time.
communicate with — We can communicate with foreigners in English.
spread across — Traditional culture spread across the world gradually.
have a great influence on — Good habits have a great influence on our study.
二、语法课堂小练习 参考答案
语法点1 定语从句
that/which is widely used in the world
that/which helps us communicate with foreigners
that/which can improve your language skills
语法点2 现在完成时
has become 2. have started 3. have developed
语法点3 评价句型
master a foreign language 2. communicate with others in English
三、综合实战 参考范文
Chinese is one of the most important languages in the world. It is made up of rich characters and has a long history. It has changed greatly over time.
Firstly, Chinese plays an important role in cultural communication. Moreover, it is spoken by more and more people around the world. As a result, it has a great influence on global culture.
It is meaningful for us to learn Chinese well. We should keep learning and spread our traditional Chinese culture to the world.
四、拓展句子仿写 参考例句
The team is made up of five hard-working members.
Confidence plays an important role in our growth.
Our opinions will change over time.
It is useful for us to learn different languages.
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