北师大版（2019） 必修第二册Unit 4 Information Technology Lesson 2 Apps课件(共19张PPT)

(共19张PPT)
Lesson 2 APPS
Activate and share
What apps do you often use What do you use them for Use the
phrases below to help you make notes.
to book tickets
to book accommodation to order food
to find directions
to learn a language
to check the weather
to look for popular restaurants
to subscribe to newspapers and magazines
Listen for understanding
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
to become powerful to be useful
to make life easier
to solve real-world problems
to enjoy learning activities
to find what people need
to use the latest technology
VR（Virtual Reality）　　AR（Augmented Reality）
MR（Mixed Reality）
Skill Builder
Listening for Key Words
Listening for key words helps you understand the conversation better and
find the answers to questions more quickly.
·Before listening，read the questions carefully.
· While listening，pay attention to the words related to the questions，e.g.
popular，difficulties，latest technologies.
·Listen for words that are stressed.
1　Why are apps so popular
2　What are the difficulties in developing an app
3　What are the latest technologies used in apps
1 Apps are popular because they are useful and make life easier.
2 The difficulty is finding out what people need and solving real-world problems.
3 The latest technologies used are VR（Virtual Reality），AR（Augmented Reality）and MR（Mixed Reality）.
Listen again. Complete the information.
Apps General functions find popular restaurants
call for taxis
find directions to different places
Apps Uses of educational apps 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
Apps Difficulties in developing an app find out what people need
solve real-world problems
Answer the questions using the information in Activity3 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
1. General functions：find popular restaurants，call for taxis，find directions to different places，and so on.
2. Students can choose their online teachers and subjects according to their personal interests and needs on educational apps.
3. The difficult things about developing an app are finding out what people need and solving real-world problems.
Listen and plete the Talk Builder.
Asking for help：
1 Can you help me out　
2 I can’t figure out how to　
3 Can you do me a favour
4 Would you be able to
Offering help：
1 Do you need help　
2 I can help you　
3 How may I　
4 Let me　
5 Can I assist you with
while listening“连词 + 分词（短语）”结构，是状语从句 while you are listening 的省略形式。
教材原句p.12 While listening, pay attention to the words related to the questions ...
while doing 构成的省略句
在时间、条件、让步、方式状语从句中，如果从句主语与主句主语一致或从句主语是 it，
且从句谓语中含有 be 动词时，可以将从句中的主语和 be 动词一起省略，构成“连词 + 分词 / 形容词 / 介词短语 /名词（短语）”结构。
【记忆口诀】
主从主语一致时，
从句含有 be 动词；
为了简练皆省去，
剩下表语或分词。
While walking in the park，I saw a variety of beautiful flowers.
在公园散步时，我看到了各种各样美丽的花。
If invited，I will attend the party. 如果被邀请，我将参加这次聚会。
If possible，I will pay a visit to the great palace tomorrow.
如果可能的话，我明天将去参观那个巨大的宫殿。
单句语法填空
（1）While 　 　　　（compete）with his teammates，he hurt his leg.
（2）If 　　　　（accept）for the job，you’ll be informed soon.
（3）There are some health problems that，when not 　　　　（treat）in time，can become bigger ones later on.
competing
accepted
treated
完成句子
（4） 当被问及为什么没参加这次赛跑时，他什么也没说，只是微笑了一下。
　　　　　 why he didn’t take part in the race，he said nothing but smiled.
（5） 如果有必要，我可以马上来。
　 　，I can come immediately.
（6） 虽然很失望，但他假装不在意。
　 　　　　　　　　 　　　，he pretended not to care about.
When asked
If necessary
Although/Though disappointed