北师大版(2019)必修2 Unit 4 Information technology Lesson 2 Apps-课件(47张ppt)

(共47张PPT)
Information Technology
Unit 4
Lesson 2
Complete the short text with information from the article.
identities
a selection
create your own images
express yourself
room for creativity
a few concerns
in virtual worlds
a source of risk
cheat others online
a positive light
Let’s check!
Let’s review!
What is an avatar
a digital identity; in computing, an image which represents you in onlion games, chat rooms, etc., and which you can move around the screen using the mouse or keys
Part 1—Lead in
Lead in
What apps do you often use
What do you use then for
Part 2—Words and Expressions
Words and Expressions
accommodation
/ k m de n/
n. 住处
e.g. Hotel accommodation is included in the price of your holiday..
Words and Expressions
subscribe
/s b skra b/
vi. 订阅，订购
e.g. Which journals does the library subscribe to
Words and Expressions
powerful
/ pa fl/
adj. 效能高的；
强有力的；强壮的
e.g. Only the intervention of powerful friends obtained her release.
Words and Expressions
latest
/ le t st/
adj. 最新的；最近的
e.g. Have you heard the latest news
Words and Expressions
reality
/ri l ti/
n. 现实；真实
e.g. Will time travel ever become a reality
Words and Expressions
VR (Virtual Reality)
/ v t u l ri l ti/
虚拟现实
e.g. One day VR will revolutionize the entertainment industry.
Words and Expressions
AR
(Augmented Reality)
/ ɡ ment d ri l ti/
增强现实
e.g. Study of key technology in virtual urban design based on AR.
Words and Expressions
MR
(Mixed Reality)
/m kst ri l ti/
混合现实
e.g. Novel, Lightweight Flight Simulator System Based on MR.
Words and Expressions
account
/ ka nt/
n. 账户
e.g. I don't have a bank account.
Words and Expressions
software
/ s ftwe (r)/
n. 计算机软件
e.g. Will the software run
on my machine
Words and Expressions
device
/d va s/
n. 设置；装置
e.g. A powerful device exploded outside the station.
Words and Expressions
ensure
/ n (r)/
vt. 确保
e.g. The book ensured his success.
Words and Expressions
material
/m t ri l/
n. 材料；素材
e.g. What material is this dress made of
Words and Expressions
gender
/ d end (r)/
n. 性别
e.g. In French the adjective must agree with the noun in number and gender.
Words and Expressions
press
/pres/
vt. 按钮
e.g. She pressed her face against the window.
Words and Expressions
button
/ b tn/
n. 按钮
e.g. Adam pressed a button and waited for the lift.
Words and Expressions
goods
/ɡ dz/
e.g. The plastic bag contained all his worldly goods.
n. 商品；货品
Words and Expressions
favour
/ fe v (r)/
n. 恩惠；
善意的行为
e.g. Can I ask a favour
Words and Expressions
confirm
/k n f m/
vt. 确认；证实
e.g. His guilty expression confirmed my suspicions.
Words and Expressions
deliver
/d l v (r)/
vi.&vt. 递送；传送
e.g. Do you have your milk delivered
Words and Expressions
error
/ er (r)/
n. 错误
e.g. There are too many errors in your work.
Part 3—Listening and speaking
Before listening!
Let’s predict.
Before listening to an interview with an app developer, read and answer the questions. Use the key words to help you. Then listen and check.
1 Why are apps so popular
2 What are the difficulties in developing an app
3 What are the latest technologies used in apps
While listening!
Listen and think.
1 Why are apps so popular
2 What are the difficulties in developing an app
3 What are the latest technologies used in apps
Apps are popular because they are useful and make life easier.
The difficulty is in solving real-world problems and finding what people need.
The latest technologies used are VR, AR and MR.
Listen again.
Apps
General functions
Uses of educational apps
Difficulties in developing an app
find popular restaurants
call for taxis
find directions to different places
Listen again.
Apps
General functions
Uses of educational apps
Difficulties in developing an app
allow students to choose their online teachers and subjects according to their personal interests and needs
ensure that students can all enjoy the same learning materials
Listen again.
Apps
General functions
Uses of educational apps
Difficulties in developing an app
find out what people need
solve real-world problems
After listening!
Group work.
Answer the questions using the information in Activity 3 to help you.
1 What are some general functions of apps
2 What can students do with educational apps
3 According to Li Xing, what are the difficulties in developing an app
4 If you are able to develop an app to solve a real-world problem, what problem would you like to solve And how
Group work.
1 What are some general functions of apps
2 What can students do with educational apps
General functions include: to find popular restaurants, call for taxis, find directions to different places, and so on.
Students can choose their online teachers and sujects according to their personal interests and needs on educational apps.
Group work.
3 According to Li Xing, what are the difficulties in developing an app
4 If you are able to develop an app to solve a real-world problem, what problem would you like to solve And how
The difficult thing about developing apps is finding out what people need and solving real-world problems.
I always feel stressed when thinking about what food to cook and what ingredients to buy in a grocery to prepare for meals.
Think and talk.
Do you and your family have trouble in shopping online
Let’s listen.
Listen to two conversation.
1 What help does Dad ask for in the first conversation
2 What help does Barbara Smith ask for in the second conversation
Dad asks for help in setting up an account on a shopping app.
The woman asks for help in finding out why her goods haven’t arrived.
Let’s listen.
Listen and plete the Talk Builder.
Talk Builder
Asking for and Offering Help
Asking for Help
1 ______________ with something
2 ______________ set up an account
3 I haven’t received the goods. ______________ and find out what’s going on
4 ______________ check again
Can you help me out
I can’t figure out how to
Can you do me a favour
Would you be able to
Let’s listen.
Listen and plete the Talk Builder.
Talk Builder
Asking for and Offering Help
Offering Help
1 ______________ downloag it
2 No worries. ______________ with that.
3 ______________ help you
4 ______________ enquire about the order with the delivery man.
5 ______________ anything else today
Do you need help
I can help you
How many
Let me
Can I assist you with
Speaking!
Pair Work.
Role-play the following situations. Note the formal/ informal use of language.
Student A: a mother who wants to choose an app
Student B: the son/ daughter offering to help
Student A: a teeanager preparing for a party
Student B: a friend offering to help to buy things online for Student A
Part 4—Homework
Homework
Recite the key words and expressions.
Write a passage about the app that can solve real-world problems and share with classmates next time .