北师大版（2019）必修第二册 Unit 4 Information technology Lesson 3 Internet and Friendships 课件（共22张，内嵌视频）

(共22张PPT)
Unit 4
Information Technology
Lesson 3 Internet and Friendships
Learning objectives:
1.Read the text to get the general idea.
2.Learn to find topic sentences and supporting details.
3.Talk about how the Internet can harm and help friendships.
4.Read for deep understanding of the two blog posts.
A video from my friend --Jack
The Internet Harms Friendships
While-reading
Part1 Robert’s blog
Read the first blog post quickly and silently . Underline the general idea and the topic sentence for each argument.
Read and explore
the first paragraph
the first sentence for each paragraph .
General idea:
Now let’s check your answers
Argument 3: Thirdly, online relationships may not be what they appear to be.
The topic sentence for each argument
Argument 1: Firstly, talking online is no replacement
for face-to-face contact.
Argument 2: Secondly, the Internet can make people self-centred.
Topic sentence and supporting details
What are supporting details How can we find them Are there some ways to help us
Supporting details will give more infornation, reasons or examples.
Some ways to help us find the supporting details
citing ideas from experts or authorities引用权威
referring to commom knowledge应用常识
giving examples
举例证明
using comparison and contrast对比比较
according to an expert
as we know
for example
in addition
however
follow the topic sentence
Try to find some supporting details of three arguments
Argument 1:
Topic sentence: Firstly, talking online is no replacement for face-to-face contact.
Supporting details: images really cannot replace a real-life smile or hug. According to a parenting expert...show kindness to others.As we know, important social skills are developed...
Supporting details: For example, instead of having proper conversations with .... with their online popularity. In addition，a lot of the content posted on social media...
Argument 2:
Topic sentence: Secondly, the Internet can make people self-centred.
Friendships are built on the basis of trust,
and with online ...who they are.
Argument3
Topic sentence：Thirdly, online relationships may not be what they appear to be.
follow the topic sentence
summary bb
Part I General Idea
Para 1
Part II Three arguments
Para 2-4
Part III Conclusion
Para5
Firstly
Secondly
Thirdly
harms
On the blackboard.
The Internet
Helps
Friendships
While-reading
Part2 Cathy’s blog
Read the second blog post . Find the general idea ，the topic sentence and their supporting details for each argument.
Show your answers!
Supporting details
Supporting details
Supporting details
argument
argument
argument
General idea
Conclusion
Post-reading
Express yourself
Who do you agree with, Robert or Cathy Why
Please show your opinions!
VS
makes communication convenient
makes me feel less lonely
makes us self-centred
makes us live in an unreal world
Harm
Help
I think the Internet helps friendships because...
I think the Internet harms friendships because...
1.Make friends with good people
2.Use the Internet properly
I Some advice
II A doggerel for fun!
One two here we go!
Beginning, body,ending as we know!
Arguments one two three!
Topics, details must be shown!
First, second and third , all of them should be used!
In the end, don’t forget!
Your opinion can’t be missed!
Students , please read the red words!
Homework
1.Read the two blog posts again and get more details from them.
2.Finish exercise 6 or 7 on page 16 .
Attention: choose one item between 6 and 7.
Thank you!