北师大版（2019）必修第二册Unit 4 Information Technology Lesson 1 Avatars language points 课件(共42张PPT)

(共42张PPT)
Unit 4　LESSON 1 AVATARS
Vocabulary and language points
1. fan n.v.风扇，扇风，粉丝--fancy adj.
2. trick v.--tricky adj.
3. identity n.-identify v.确定，识别--identical adj.确定的，同一的
4. variety n.--vary v.使变化--various adj.
5. a variety of=varieties of=various
6. instant adj.--instantly adv./conj.一...就...
7. sensible adj.--sensibly adv.-sense n.感觉，意义，理性，理智
8. create v.--creative--adj.--creativity n.
1. obvious adj.-obviously
2. hair+style=hairstyle
3. select v.--selection n.-selective adj.
4. type v./n.--typical adj.典型的
5. concern n./v.--concerned adj.相关的，担心的--concerning adj.令人担忧的；conj.关于，涉及
1. variety n. 多样化，变化
【教材】 Yet, very few people knew that future avatars would have such a wide variety of forms and uses.
然而，很少有人知道虚拟形象后来会有如此广泛的形式和用途。
【记牢】
(1)a variety of＝varieties of各种各样的
(2)various adj.不同的，各种各样的
(3)vary vi.& vt.变化，使不同
vary from ... to ...从……到……不等
核心词汇讲解
单句语法填空
①Ocean colour varies from green __ blue，depending on the type and concentration of phytoplankton.
②No matter what you like to do，there is a way to get involved in _______ (variety) activities on Earth Day.
③If you come to visit China，you will experience a culture of amazing depth and _______ (vary)．
to
various
variety
【写美】　词汇升级
④When entering the farm, we were attracted by its cleanness and rich various fruit.
→When entering the farm, we were attracted by its cleanness and rich ____________ fruit.
【点津】　a variety of和varieties of既可以修饰可数名词，又可以修饰不可数名词；该短语修饰可数名词作主语时，谓语动词用复数，修饰不可数名词作主语时，谓语动词用单数。
varieties of
2. more than 多于；超出；不仅仅是；非常
【教材】　... not just their friends, they started having more than one avatar ...
……不仅仅是他们的朋友时，他们开始使用不止一个虚拟形象……
【要点】
more than＋数词＝over比……多
more than＋形容词/副词＝very十分，非常，很
more than＋名词＝not only不仅仅
no more than仅仅；只不过
not more than至多；不超过
补全句子
①China Daily is ______________________，and it keeps us in touch with the world.
《中国日报》不仅仅是一份报纸，它还让我们与世界保持联系。
②I'm _________________________________ in my car.
我非常愿意用车把你送去。
同义句转换
③I have been waiting for you for over 2 hours.
→I have been waiting for you for _________ 2 hours.
more than a newspaper
more than happy to take you there
more than
3. selection n. 供选择的同类物品；选择
【教材】In most web chats, people choose an avatar from a selection of ready-made images, or create their own images.
在大多数网络聊天中，人们都是从现成的图片中选择一个作为虚拟形象，或者创建自己的图片。
【要点】select ...from ...从……中挑选出……
【练透】　单句语法填空/补全句子
①It seems obvious that evolution should select ____ larger brains.
②_________ (select) volunteers，you may need to understand the motivations of the people you wish to attract.
③Students should read the list with their parents or carers, and _____________________ they would like to do.
学生应与家长或监护人一起阅读列表，并选择两项自己喜欢的活动。
④Below is ___________ from a popular science book.
以下是一本流行科学书籍的节选。
from
To select
select two activities
a selection
翻译句子
⑤我们可以早点出发，这样我们就有更多的时间来读书和选书。
__________________________________________________________________________
We can set out early so that we'll have more time to read and select books.
4. concern n．[U，C] 担忧，忧虑；[C]重要的事情vt.与……有关，涉及；担忧；使担心；使感兴趣
【教材】The use of avatars has also caused a few concerns.
虚拟形象的使用也引起了一些担忧。
【记牢】
cause concern about ...引起对……的关注/担忧
express/show concern about/for ...对……表示关心/担心
be concerned about ...为……担忧/忧虑
as far as sb/sth is concerned就某人/事而言
单句语法填空/补全句子
①If there is truly a concern _____ a professor's professionalism or ability, be sure to use online course evaluations to calmly offer your comments.
②However, those in the 10 to 12 age group were concerned _____ how many people like their posts.
③Now similar ________ (concern) are being raised by the giants（巨头） that deal in data，the oil of the digital age.
④_____________________，riding bicycles is a good solution.
就我而言，骑自行车是一个很好的解决办法。
about
about
concerns
As far as I'm concerned
一句多译
⑧我写这封信是为了表达我们对你的健康的真诚关心。
→_______________________________________________________
→__________________________________________________________
I'm writing to show our genuine concern for your health.
I'm writing to express our sincere concern for your health.
句型：what 引导宾语从句
【教材】　They also experiment with things like different hairstyles — which says a lot，perhaps，about what they want to look like.
人们还进行新的尝试，例如换上不同的发型，这可能从很大程度上透露了他们希望自己看起来是什么样子。
【记牢】
what引导名词性从句时，在从句中充当主语、宾语或表语，意为“什么……的(东西/事情)”。
重点句型
【例句】　They've done what they can to help her.
他们已经尽力帮助她了。
【练透】　单句语法填空/补全句子
①He saves ____ he earns.
②He is ____ is generally called a traitor.
③The number of the students in our school is ten times ____ it was before liberation.
④I don't know ___________________ to stop pollution.
我不知道应该做什么来阻止污染。
⑤Several modern buildings are being built in ________________________．
在过去是市场的地方，几座现代化的楼房正在建起。
what
what
what
what should be done
what used to be a market
翻译句子
⑥如果不方便，让我知道什么时间最适合你。
_____________________________________________
If not, let me know what time suits you best.
句型公式：so ...that ...如此……以至于……
【教材】Some users worry that they are spending so much time in virtual worlds that they are becoming afraid of meeting people in the real world.
一些用户担心他们在虚拟世界中花费了太多时间，以至于开始害怕在现实世界中与人见面。
单句语法填空/补全句子
①It's __ hot that we have to stay in the room with air-conditioning.
②It's such __ boring lecture that all audience felt sleepy.
③The river is ____________ no one can swim across it.
这条河太宽了，没人能游过去。
④It was ________________________ I'll never forget its taste.
这是如此美味的食物，我永远不会忘记它的味道。
so
a
so wide that
such delicious food that
一句多译
⑤这是一次激动人心的旅行，我们永远不会忘记。
→____________________________________________________
→_______________________________________________________
→____________________________________________________
【点津】　(1)当名词前面有many，much, few, little(少)等表示数量多少的限定词时，应该用so，而不能用such。
(2)当“so＋adj./adv.”或“such ...”放在句首时，主句要用部分倒装。
It was so exciting a trip that we will never forget.
It was such an exciting trip that we will never forget.
So exciting was it a trip that we will never forget.
一、单句语法填空
1．Every one of us has a ________ (sense) avatar for work, or meeting people, or having fun.
2．_________ (obvious), he was making up an excuse for his being late.
3．She was _________ (concern) that she might miss the turning and get lost.
4．The software _______ (enable) you to get information from the Internet in seconds.
5．This is a unique forum and one which I hope you approach with boldness and __________ (create)．
sensible
Obviously
concerned
enables
creativity
基础知识检测
6．We can become accustomed to any changes we choose to make in our ___________ (person)．
7．The children have to sit a tough _________ (select) test.
8．You can then use this hut as a base for ____________ (explore) into the mountains around.
personality
selection
explorations
二、完成句子
1．____________________ (各种各样的头像) are a major part of how people use the Internet to communicate and express themselves.
2．John promised his doctor he _______________ (不会抽烟), and he has not smoked ever since.
3．I often spend __________________________________________________
(很多时间在网上和我的朋友聊天以至于) my parents worry about my study.
A variety of avatars
would not smoke
so much time chatting with my friend on the Internet that
4．In most web chat, people can use avatars __________________________ (他们自己所创建的)．
5．I _____________________ (一直期待着) learning English well all the time.
6．Emily looked up at her mother and told her ________________________ (她自己的经历)．
that they create their own
am looking forward to
what she had experienced
The avatar you choose says a lot about you.The article will help you understand your choice of avatars better.
[1]When you are online, you can be anyone or anything.You can create your own image①and a new personality②.These digital identities③， [2]known as avatars, are a key④ part of how people use the Internet to communicate and express themselves.
[1]本句中When引导时间状语从句，意为“当……的时候”。
[2]此处为过去分词短语作后置定语，修饰名词identities。
①image n．
图像；形象
②personality n．个性，性格
③identity n．
身份；特征
④key adj.
关键的；最重要的
课文解读
The first simple 2D⑤avatars appeared in role-playing⑥computer games in the 1980s.Yet, very few people knew [3] that future avatars would have such a wide variety⑦ of forms and uses.By the late 1990s, they had been used in web chats.
[3]本句中that引导宾语从句。
⑤2D (2-dimensional) adj.二维的
⑥role-playing n．
角色扮演，角色模仿
⑦variety n．多样化，变化
a variety of各种各样的
[4] When people started creating their own avatars, they discovered that they were going to have the power⑧ to create new identities that did not look or act like their real selves at all. They could dress their avatars in fancy⑨ clothes, or they could try being someone of the opposite sex⑩，and call themselves “Andy” instead of “Anna”！
⑧power n．力量，能力； 电力；政权，势力
⑨fancy adj.
花哨的；别致的
⑩sex n．性别
instead of
代替；而不是……
[4]本句中When引导时间状语从句，意为“当……的时候”；第一个that引导宾语从句；第二个that引导定语从句，修饰先行词 identities。
[5]When Internet users realised that their avatars would be seen by many people, not just their friends, they started having more than one avatar：a sensible one for work；a friendly, good-looking one for meeting people; and a silly one for having fun.Avatars let you express yourself and they give you lots of room for creativity .
sensible adj.
朴素实用的；明智的，合理的
good-looking adj.好看的；美貌的
creativity n．创造力；独创性
blog n．博客；网络日志
vt.发表博客
relaxing adj.令人放松的
funny adj.有趣的
feature n．特色，特征；特写或专题节目；vt.特写；以…为特色
obviously adv.显而易见地，明显地
[6]本句中两个that都引导定语从句，修饰先行词avatars。
[7]本句中which引导定语从句，修饰先行词hairstyles；what引导宾语从句。
experiment vi.& vt.做实验，进行试验；n.实验
[8]本句中that引导定语从句，修饰先行词avatars；when引导时间状语从句，意为“当……的时候”。
[9]本句中that引导宾语从句；so ...that ...引导结果状语从句，意为“如此……以至于……”。
[10]本句中as引导原因状语从句，意为“因为”。
[11]本句中when引导定语从句，修饰先行词a time。
1．create your own ______ and a new personality创造你自己的形象和新的个性
2．a ________ choice一个明智的选择
3．a wide _______ of forms and uses各种各样的形式和用途
4．dress their avatars in _____ clothes给他们的虚拟形象穿上华丽的衣服
5．give you lots of room for __________给你很多创造空间
6．a _________ of ready-made images选择现成的图像
image
sensible
variety
fancy
creativity
selection
7．cause a few ________引起一些担忧
8．in _______ world在虚拟世界
9．_____ others online在网上欺骗他人
10．With the help of the ________ technology, we can complete the task in _______．(advance)
11．He was really ________ by the _________ problem which also __________ other people.(confuse)
concerns
virtual
cheat
advanced
advance
confused
confusing
confusing
12．He has realised that the ability to speak ______ English is of great importance.However, he is in need of much practice in order to speak more ________．(fluent)
13．Since you are eighteen, you should be ___________ for what you have done.In my opinion, doing voluntary work will help you build up a sense of ______________．(responsible)
fluent
fluently
responsible
responsibility
1．She has ________________ (沉迷) golf these days.
2．Well, we shall _______________ (期待) seeing him tomorrow.
3．You don't want your living space to _________ (看起来像) a bedroom.
4．My parents were ____________ (或多或少) unhappy about it.
5．People change their minds for ____________ (各种各样的) reasons.
6．Remember, you ____________________ (有能力做) whatever you want.
7．Now I can walk to work __________ (代替) going by car.
8．He stood up and began to ___________ (绕着……来回转) the room.
been addicted to
look forward to
look like
more or less
a variety of
have the power to do
instead of
move around
演示完毕 感谢观看
THANK YOU
1．◎教材原句 These digital identities, known as avatars, are a key part of how people use the Internet to communicate and express themselves.
这些数字身份，被称作“虚拟形象”，这是人们利用互联网进行交流和表达自己的关键部分。
◎句式分析 　过去分词短语作后置定语
◎佳句仿写 The book _________________ is taught in class.
课堂上讲鲁迅写的书。
written by Lu Xun
2．◎教材原句 By the late 1990s，they had been used in web chats.
20世纪90年代末，虚拟形象已被用于网络聊天。
◎句式分析 　过去完成时的被动语态
◎佳句仿写 The task _________________ before 12：00 yesterday.
昨天中午12点以前任务已经完成了。
had been finished
3．◎教材原句 Most people create avatars that have similar features to their personalities and that look more or less like them and act like them.
大多数人创设的虚拟形象与他们的个性有着相似的特征，看起来或多或少像他们，在行为上也像他们。
◎句式分析 　that引导定语从句
◎佳句仿写 The girl __________________________________ is a good runner.
坐在树下的那个女孩是一个很棒的赛跑运动员。
that/who is sitting under the tree
4．◎教材原句 Some users worry that they are spending so much time in virtual worlds that they are becoming afraid of meeting people in the real world.
一些用户担心他们在虚拟世界中花费了太多时间，以至于开始害怕在现实世界中与人见面。
◎句式分析 　so ...that ...如此……以至于……
◎佳句仿写 This teacher is ____________ we all like him.
这位老师非常和蔼，我们都喜欢他。
so kind that