北师大版（2019）必修 第二册Unit 4 Information Technology Lesson 3 lnternet and friendships预习课课件(共25张PPT)

(共25张PPT)
Unit4
Lesson3 预习课
学习目标：
1、会读会背会默写十五个重点单词与五个重点短语。
2、会在语法填空及选词填空中会灵活运用。
Step1:学习单词 P108（课本）
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
组一
组二
组三
组四
检测一下——我的英语发音好！
o·cca·sion 派生： occasion（n. 时刻）→ occasional （adj.偶尔的） → occasionally（adv.间或，偶尔）。-al 与 有关的; -ly 以 方式
gradu·ation 派生： graduate(v. 毕业) +-ion(名词后缀：行动、过程、结果、状态） → graduation n. 毕业
con·gratu·la·tion 派生： congratulate (vt. 祝贺）+-ion（名词后缀：行动、过程、结果、状态） → congratulation n. 恭喜，祝贺
tra·di·tion 派生： tradition(n. 风俗;传统)+-al(形容词后缀：与 …有关的）traditional adj. 传统的；习俗的
单词变变变之派生
Step2:背默指导
de·cor·ate 仿声：蛋壳垒的(音似)→用蛋壳垒的东西来进行
“装 饰”(decorate)
adult 仿声：爱打他(音似)→儿大了，我们“成年人”（adult ）要克制自己，不能爱打他
dragon 拆分：drag+on，把它拖(drag) 到“龙”（dragon）背上(on）
sticky 构词: stick(v. 粘贴；粘住)+-y(形容词后级：有…倾向的)
→sticky adj. 黏性的；黏的
单词拼拼拼之构词、仿声、拆分
lunar ：古罗马神话中，月充女神叫作“露娜”(Luna)，lunar一词便来源于此。
tur·key ：15、16世纪的土耳其(Turkey) 首都君士坦丁堡是连接欧亚的重要贸易枢红，很多商人在那里销售一种产自非洲马达加斯加岛的大型鸟类“珍珠鸡”，但在土耳其被商人改称为“土耳其鸡”(Turkey cock)销往英国。当英国人到达马萨诸塞州时，就把在当地见到的类似的鸟类称为turkey。
mon·ster ：来自拉丁语monere。-ster, 贬义后缀。用于指怪物、恶魔或在古代出现的反常现象。
单词讲讲讲之词源
重点单词汉译英
①
②
③
④
Step3:进入文本，攻克重点短语
(学习指导P24) Do you think the Internet helps or harms friendships你认为互联网有助于友谊还是有害于友谊？
【应用融会】
单句语法填空 /完成句子
②This object gives off _________ (harm) gases which may do harm _____ our health. You must make the object ___________ (harm) before you use it.
③__________________________________ him first.
先向他道歉没有什么坏处。
一句多译: 你吸烟会危及孩子的健康。
④(harm)____________________________________________________
⑤(harmful)
_________________________________________________________
harmful
to
harmless
There is no harm in apologizing to
Your smoking can do harm to the health of your children.
Your smoking can be harmful to the health of your children.
(P25) Firstly, talking online is no replacement for face-to-face contact- images really cannot replace a real-life smile or hug.
首先,网上聊天不能代替面对面的交流片当然无法代替现实生活中的微笑或拥抱。
【应用融会】
完成句子
②It's not a good idea to miss meals and ________________________ .
不吃正餐，改吃点心，这不是什么好主意。
③The librarian asked me to ________________________ after reading.
图书管理员让我看完书后把它放回书架上。
2. 同义句转换
④ No one can replace her father in her heart.
>No one can ___________________________________ in her heart.
>No one can ___________________________________ in her heart.
replace them with/by snacks
replace the book on the shelf
take the replace of her father
take her father’s place
(P25) According to a parenting expert, Denise Daniels, communicating through a screen makes it more difficult for children to concentrate or show kindness to others.
根据育儿专家丹尼斯 丹尼尔斯的说法，通过屏幕交流会使儿童更难集中注意力或对他人表示善意。
【应用融会】
单句语法填空 /完成句子
② Neal kept interrupting, breaking my________________ (concentrate).
③ We must concentrate our efforts on __________ (improve) education.
④ It was up to him ________________________ and make something of himself.
是否能专心学习并取得一定成就要靠他自己。
concentration
improving
to concentrate on his studies
(P25) In my opinion, friends should focus more on face-to-face communication, and less on online communication.
在我看来，朋友们应该多关注面对面的交流，少进行线上交流。
【应用融会】
完成句子
④ You’d better __________________________________ .
你最好把你的注意力放在学业上。
⑤ It took her a lot of time _________________________________ and correcting her students’ homework.
集中精力备课和批改学生的作业花费了她很多时间。
⑥ The children's faces __________________________ in the photograph.
照片上孩子们的脸非常模糊。
focus your attention on your studies
to focus on preparing her classes
are badly out of focus
(P27) According to a parenting expert, Denise Daniels, communicating through a screen makes it more difficult for children to concentrate or show kindness to others.根据育儿专家丹尼斯 丹尼尔斯的说法，通过屏幕交流会使儿童更难集中注意力或对他人表示善意。
【应用融会】
单句语法填空 /完成句子
①He didn't make ____ clear when and where the sports meeting would be held.
②I find ___ no use arguing with Bill because he never changes his mind.
③He considered it important for him_______ (learn)spoken English well.
④Susan ________________________ she wished to make a new life for herself.
苏珊清楚地跟我表明她希望为自己创造新的生活。
⑤The heavy rain_______________________________________ .
大雨使得我们无法出去。
it
it
to learn
made it clear to me that
made it impossible for us to go out
it a good habit
it easy to get along with him
As we know, important social skills are developed throughdirect contact with other people. 众所周知，重要的社交技能是通过直接与他人接触培养的。
as 引导的非限制性定语从句:
As is known to the United States, Mark Twain is a great Americanwriter.
美国人都知道，马克。吐温是一位伟大的美国作家。
The earth, as we know, travels around the sun.
我们都知道，地球绕着太阳转。
【拓展】as 引导的非限制性定语从句的常见表达：
as is known to us all 众所周知 as sb once said 正如某人曾经说过的
as sb points out 正如某人指出的 as is offen the case 情况总是这样的
as is reported 正如所报道的 as is mentioned above 如上所述
In addition, a lot of the content posted on social media is shallow or trivial.
此外，很多发布在社交媒体上的内容都很肤浅或琐碎。
过去分词（短语）作定语
You can stay in touch with friends no matter where you are or what you are doing.
无论你在哪里，在做什么，都可以和朋友保持联系。
“no matter ＋ 疑问词”引导的让步状语从句
Because of this, going online can be particularly dangerous for people who are easily influenced or too trusting.
先翻译句子，再思考画线部分在句子中做的成分
因此，对于那些容易受影响或者过于信任他人的人来说，上网尤其危险。
原因状语从句
动名词作主语
定语从句，修饰先行词people
harm friendships 损害友谊 face-to-face contact 面对面交流replace a real-life smile or hug 代替现实生活中的微笑或拥抱
show kindness to 对表示善意
through direct contact with other people 通过有接与他人接触enable sb. to do sth. 使某人能够做成某事
be concerned with关心…… the number of……的数量
cannot compare to 不能与 相比
in addition 除此之外(介词短语作状语）
on social media在社交媒体上 not necessarily未必
Step4:短语圈圈画画
P19
on the basis of 在……的基础上
be100 percent sure that… 百分百地确信
be honest about sth 对某事坦诚 in one’s opinion 在某人看来focus on many ways 在很多方面
maintain healthy relationships 保持健康关系
stay in touch with 与…保持联系
be in contact (with...) “和…保持联系
be on the move 在移动中,在行进中 share.. with..与……共享give a brief response to对……作简短回复
with an emoji or a picture 用一个表情行号或图片
feel loved and cared for 感到被爱和关心 point out 指出
P20
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/学案上基础题
Ⅰ.单词拼写
He forced himself to ________（关注）his thoughts on work.
The company‘s market share is 48 _______(百分比)in the marketplace.
They put their arms around each other and ________ (拥抱).
Successful people have some good qualities and above all, they are never ________ (满足) with a simple life so they keep fighting until they are top ones.
We were invited to give our ________ (意见) about how the work should be done.
It was fortunate that the water was ________（浅的）and the children were able to go through it.
The diet for the patient should be ___________ (保持)unchanged for about a year.
The true concept of mobile phones has disappeared, and now we have ___________ (智能手机）
focus
percent
hugged
content
opinions
shallow
maintained
smartphones
THANKS