北师大版（2019）必修第二册Unit 4 Information Technology Lesson1 Avatars预习课课件(共24张PPT)

(共24张PPT)
Unit 4
lesson1 预习课
学习目标：
1.会读会认全部单词
2.会背会默写14个高频单词
3.掌握学习相关短语
4.会在句子中会灵活运用。
part1：单词与短语
1、看音标自读单词
2、教读（教师教读，并领读）
3、同桌互读
4、自我展示读
Step1:学习单词 P111（课本）
检测一下——我的英语发音好！
组一 组二 组三
image / m d / creativity / kri e t v ti/ sensible / sens bl/
blog /bl ɡ/ obviously / bvi sli/ variety /v ra ti/
identity /a dent ti/ instant / nst nt/ hairstyle / he sta l/
sex /seks/ nowadays / na de z/ fancy / f nsi/
trick /tr k/ experiment / k sper m nt/ type /ta p/
concern /k n s n/ selection /s lek n/ virtual / v t u l/
cheat /t i t/ view /vju /
核心单词默写
1.　 /tr k/ vt.欺骗,诱骗,哄骗
2.　 /v ra ti/ n.多样化,变化
3.　 / sens bl/ adj.朴素实用的;明智的,合理的
4.　 / k sper m nt/vi.& vt.做试验,进行试验 n.实验
5. 　 / na de z/ adv.现今,现时
6. 　 /s lek n/ n.供选择的同类物品;选择
7.　 /k n s n/ n.担忧,忧虑 vt.与……有关;使担心
8. 　 /t i t/ vt.欺骗;欺诈
9. 　 /vju / vt.看,把……视为
阅读词汇 英译汉
1..image n
2..fancy adj.
3.identity n.
4.sex n.
5.blog n.
vi.
6.hairstyle n.
7..type vi.& vt.
n.
8.virtual adj.
图像；形象
花哨的
身份；特征
性别
博客
发型
打字；打
类型；种类
虚拟的
写博客
单词变形记记记
1．explore vt.探究；探讨；探险→ explorer n．探险家；勘探者→ exploration n．探索
2．convenience n．方便，便利→ convenient adj.方便的
3．addicted adj.对……着迷的；沉迷的→ addiction n．沉溺；嗜好→ addictive adj.使人上瘾的→ addict vt.使上瘾 n．有瘾的人
4．recommendation n．建议，提议；推荐→ recommend vt.推荐；建议
5．personality n．个性，性格→ personal adj.个人的→ personally adv.亲自地；就自己而言
6．admit vt.承认→ admission n．准入；入场费；承认
7．variety n．多样化，变化→various adj.不同的；各种各样的→ vary vt.&vi.使多样化；变化
8．instant adj.立刻的，马上的→ instantly adv.马上
9．obviously adv.显而易见的，明显的→ obvious adj.显然的，显而易见的
10．selection n．选择；供选择的同类事物→ select vt.挑选；选择
短语词块找找找
①in fancy clothes 衣着华丽 ②express oneself freely 自由地表达 ③trick others 欺骗某人 ④create a digital identity 创造数字身份
⑤ avoid online safety risks 避免在线安全风险 ⑥a varierty of各种各样的
⑦have the power to do有能力做····· ⑧not...at all根本不··....
⑨dress...in..给·····穿······ ⑩instead of 代替，而不是
more than one 不止一个 have fun 玩得高兴
a blog avatar 博客头像 more or less 或多或少
experiment with 尝试 move around（＝ move about）四处走动
type in...输入····.· attend classes上课
cause concerns引起担忧
21 in a more positive light 从更加积极的角度 22 look forward to 期望；盼望
23 in virtual worlds 在虚拟世界中 24 become afraid of 变得害怕...
Step3:进入文本，攻克重点短语、句型
1．(学习指导P11) to trick others 来欺骗某人
用法详见：点拨归纳
例句：The boy's partner tried to trick him out of his toy.
小男孩的伙伴企图骗走他的玩具。
②She tricked him giving her the money.
③It is said that the company 20 million dollars last month.
据说这家公司上个月被骗走了2000万美元。
④The naughty boys would like to . 调皮的男孩子们喜欢捉弄那只猫。
⑤If that pair of shoes doesn't fit, I'm sure this one will .
如果那双鞋子不适合，我确信这双一定可以。
into　
was tricked out of　
play a trick on the cat　
do the trick　
2.(学习指导P12)Yet, very few people knew that future avatars would have such a wide variety of forms anduses.当时，很少有人知道虚拟形象后来会有如此广泛的形式和用途。
（1）单句语法填空
④Lack of nutrition may lead to (variety) diseases.
⑤ Malaysia, a multiracial and multicultural country, is famous for its (vary) of delicious food.
⑥There (be) a variety of goods in the supermarket.
⑦That her health worries her family a lot
她的身体有时很好，有时又比较虚弱，这让她的家人很是担忧。
⑧As in China, the climate in Canada .
正如中国一样，加拿大的气候也因地而异。
various　
varieties　
are
varies from good to rather weak
varies with the area　
3.(学习指导P12)The use of avatars has also caused a few concerns.
虚拟形象的使用也引起了很多的担忧。
（1）完成句子
②（2020·全国卷II）Scientists in Louisiana they decided to payhunters $5 a tail.
路易斯安那州的科学家非常担心，他们决定每条尾巴付给猎人5美元。
③Honestly speaking,I the matter.
诚实地说，我与那事无关。
④The old man ,such as John,Peter and Tom.
这位老人关心许多青少年，例如约翰、彼得和汤姆。
⑤ , it's everyone's duty to protect the environment.
在我看来，保护环境是我们每个人的责任。
⑥It's easy across the other side of the world and not to see the poverty and unhappiness on your own doorstep.
人们往往会关心世界另一端的问题，而忽略了自己家门口的贫困和不幸。
were so concerned that　
have no concern with
is concerned about many teenagers
As far as I'mconcerned
to be concerned with problems
4.(学习指导P13)However, other users view avatars in a more positive light.
但是，其他用户则以更为积极的态度看待虚拟形象。
（1）完成句子
⑤The plane soon flew .
那架飞机很快从视野中消失了。
⑥You can the beautiful sunrise and sunset from the window.
从窗子这里你可以好好欣赏美丽的日出和日落。
⑦ the bad weather, our journey to Lijiang had to be put off.
考虑到糟糕的天气，我们到丽江的旅行不得不推迟了。
out of view
have a good view of
In view of
5.(教材P9)By the late 1990s，they had been used in web chats like instant messenger.到了20世纪90年代后期，它们已经被应用在网络聊天，如实时通信
instant n 瞬息，顷刻，刹那; adj 立即的;紧急的 ;坚持的→ instantly adv 立刻;立即;马上
实战演练：
1.She recognized me (instant) she caught a glimpse （一瞥）of me.
instantly
the instant (that) 一……就……
表示“一……就……”的结构还有哪些？
the minute，the moment，the second，as soon as，immediately，directly，hardly...when...，no sooner...than...等。
6.Avatars let you express yourself and give you lots of room for creativity.
虚拟形象让你可以表达自己，还给你很多创造空间。
creativity
n.创造力；独创性→creative adj.创造性的，有创意的→creatively adv.创造性地，有创造力地）
例句体会：
(1)A city is the product of the human hand and mind, reflecting man's intelligence and creativity.
城市是人类的手和大脑的产物，反映了人类的智慧和创造力。［2019·江苏卷］
单句语法填空
① (creative) and originality are more importantthan technical skills.
② The new-media industry attracts young and (create) people.
③ We need to find ways of dealing (creative) and usefully with our feelings.
Creativity
creative
creatively
7.However, nearly all avatars are tall, young and nice-looking,so people obviously make their avatars look better than they do inreal life.
然而，几乎所有的虚拟形象都个子高挑、样貌年轻、面容姣好，所以人们显然想让他们的虚拟形象看起来比现实生活中更好。
obviously adv.显而易见地，明显地
Obviously Don had somehow made the vehicle move．［2020·浙江二考］
显然唐用某种方法让车动了起来。
obvious adj. 明显的
句式：It is／seems obvious that...显然······=obviously
It is obvious that evolution should select for larger brains.
显然，进化应该选择更大的大脑。
8 .In most web chats, people choose an avatar from a selection oready-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。
selection n.供选择的同类物品；选择
搭配：a selection of 各种······可供选择
select vt.选择，挑选 n.被挑选出来的人或物 → selective adj.选择的；
单句语法填空
①A (select) of readers' comments are published below.
④ Sales still happen,but buyers are more (select).
selection
selective
9.(教材P9)They could dress their avatars in fancy clothes，or they could try being someone of the opposite sex，and call themselves “Andy” instead of “Anna”！他们可以给虚拟形象穿上奇装异服，或者他们可以尝试成为异性，称自己为“安迪”而不是“安娜”！
[归纳拓展]
(1)instead of表示“代替，作为……的替换”，为介词短语，其后常接名词、代词或v ing作宾语。
(2)instead副词，意为“代替，顶替”，单独使用。
例句体会：
①Jack didn't study law.Instead，he decided to become an actor.
杰克没有学法律。相反，他决定成为一名演员。
②I want to fly to Beijing instead of taking a train.
我想坐飞机去北京代替坐火车。
1．(教材P9)They also experiment with things like different hairstyles－which says a lot，perhaps，about what they want to look like．他们也会尝试像不同的发型这样的事情，这很可能会体现他们理想中的样子。
重点句型
[句式分析]　标红句子是 从句，what在从句中作 。what引导宾语从句时，在从句中可以作主语、宾语、表语和定语
宾语
宾语
[句式拓展]
1.You can't imagine what（表） he（主） was（系） ten years ago.
你无法想象他10年前是个什么样的人。(what在从句中作表语)　
2.I don't know what（修饰限定books,作定语） books（宾补） he（主） likes（谓） reading（宾）.
我不知道他喜欢读什么书。(what在从句中作定语)
3.They don't know what happened.
他们不知道发生了什么。(what在从句中作主语)
2．(教材P9)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.一些网民开始担心自己在虚拟世界沉溺太久，以至于开始害怕在现实中与人交往。
1.例句体会：
①He was so foolish that he accepted her invitation.
他接受她的邀请真是太傻了。
②It is so good a camping spot that I'd like to go there again.
这个露营地点如此好，以至于我想再去一次。
③There were so few guests that the host felt sad.
宾客如此之少，主人感到伤心。
④It is such a heavy box that I can't lift it.
这个箱子如此重以至于我提不起来。
⑤So fast is the city developing that you can never imagine what it will be like tomorrow.
现在城市发展如此之快，你永远想象不到它明天会是什么样子。
1）完成句子
①It was we all stayed at home.
昨天天气很冷，我们都待在家里。
②He the teachers are pleased with him.
他进步得很快，老师们对他感到很满意
③So that I can hardly understand it.
这篇文章太难了，我几乎读不懂。
so cold yesterday that
has made such great progress
difficult is the article
Step5: 课堂及时复习（单词、短语和句型）
1、读背知识点
2、检测（集体默写，抽查默写）
3、完成相应练习册上基础题
I.单词拼写
1.(2019·全国卷 I) It also doesn’t require a new （类型） of technology that people aren't already familiar with.
2.(2020·新高考全国卷I)To test the effect of social influence on eating habits, there searchers conducted two （实验）.
3. Personally, I'm more interested in （虚拟的）universities.
4. He actually enjoys his new （发型） and has decided to start showing it off.
5.I’m Tyson’s little brother，but that's only part of my （身份）.
6.Silence may be （被视为）by some cultural groups as an extremely uncomfortable behaviour.
type
experiments
virtual
hairsytle
identity
viewed
Thank you！