unit 9[上学期]
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课件16张PPT。HangZhou No. 11 High SchoolUnit 9 Technology Wireless telephones are hand-held phones with built-in antennas （天线 ）, often called cell, mobile, or PCS phones. These phones are popular with callers because they can be carried easily from place to place.What is a cell phone?Wireless telephones are two-way radios. When you talk
into a wireless telephone, it
picks up your voice and
converts the sound to radio frequency energy (or radiowaves). The radio waves travel through the air until they reach
a receiver at a nearby base station. The base station then sends
your call through the telephone network until it reaches the
person you are calling.
How does a cellphone work?Some brands of the cellphones:Life on the go A.busy life going here and there
B.active and busy life with cell phones
C.cell phones enable students to work
faster and better
D. ways of life with cell phones.Life on the go refers to a fast-paced lifestyle where people are always on the go-rushing from one place to another, doing many things at once, and using portable phones, computers,etc.Pre-reading:
1. Have you ever used a cell phone? Do any of your classmates have cell phones?
2. How is the way we live today different from the one in the past? How have inventions and new technology changed our way of life?
3. Why are things like cell phones, computers and TV so popular?
4. what invention do you think is the most important in the human history?Skimming:
Try to find the main idea of each paragraph:
Para1:
Para2:
Para3:
Para4:
Para5:Wang Mei is an example of Chinese teenagers who have cellphones.Cellphones can be used for many things.Cellphones also cause problems.There are several reasons why teenagers like cell- phone .Wang Mei explains why she likes her cell phone and what she used it for.
Read the text though and fill out the outline of the text:
1. Wang Mei is an example of Chinese teengers who have cell phones.
2. Cell phones can be used for many things.
For example:
3. Cell phones also cause problems.
1. In school
2. At home
4. There are several reasons why teenagers like cellphones.
1.
2.
3.
talking to people, sending messages and pictures, playing games, listening to music, keeping appointments.cellphones may disturb lessons.students may spend too much time and money on cellphone calls.Cellphones help us stay in touch with friends and family.Cellphones make us feel safer.Cellphones are fun and cool.Modern cellphones:1.They are used as cameras. 3. They are used to send e-mail or surf
the Internet.2. They are used as radios.123New functions are being added to the phones.1.fun &games 2.download music3.electronic calendar4.sending text messages
and images.5.and so on…….No cellhpones hereThe opinion of a headmaster:If a phone starts ringing in the classroom, teachers and students
are disturbed and can not work.The opinion of some parents:They worry that their children will spend too much time and
money on phone call.Why are cellhpones so popular,especially among teenagers?1.We have a need to stay in touch with friends and family no matter where we are or what we are doing. 2. Having a cellphone also makes us feel safer, since we can
call for help in case of an emergency.3. To many teenagers the cellphone is not only a useful tool but also a way to have fun and be cool.Negative Effectsconvenience Positive Effects
safetyspeed
cool factorin school, disturb lessonsspend too much time spend too much moneyharmful radiation…….……..cheat in the examinations Task: Do you agree or not with those words?
“New inventions such as cellphones, laptops, always make our life much easier and more comfortable.”
into a wireless telephone, it
picks up your voice and
converts the sound to radio frequency energy (or radiowaves). The radio waves travel through the air until they reach
a receiver at a nearby base station. The base station then sends
your call through the telephone network until it reaches the
person you are calling.
How does a cellphone work?Some brands of the cellphones:Life on the go A.busy life going here and there
B.active and busy life with cell phones
C.cell phones enable students to work
faster and better
D. ways of life with cell phones.Life on the go refers to a fast-paced lifestyle where people are always on the go-rushing from one place to another, doing many things at once, and using portable phones, computers,etc.Pre-reading:
1. Have you ever used a cell phone? Do any of your classmates have cell phones?
2. How is the way we live today different from the one in the past? How have inventions and new technology changed our way of life?
3. Why are things like cell phones, computers and TV so popular?
4. what invention do you think is the most important in the human history?Skimming:
Try to find the main idea of each paragraph:
Para1:
Para2:
Para3:
Para4:
Para5:Wang Mei is an example of Chinese teenagers who have cellphones.Cellphones can be used for many things.Cellphones also cause problems.There are several reasons why teenagers like cell- phone .Wang Mei explains why she likes her cell phone and what she used it for.
Read the text though and fill out the outline of the text:
1. Wang Mei is an example of Chinese teengers who have cell phones.
2. Cell phones can be used for many things.
For example:
3. Cell phones also cause problems.
1. In school
2. At home
4. There are several reasons why teenagers like cellphones.
1.
2.
3.
talking to people, sending messages and pictures, playing games, listening to music, keeping appointments.cellphones may disturb lessons.students may spend too much time and money on cellphone calls.Cellphones help us stay in touch with friends and family.Cellphones make us feel safer.Cellphones are fun and cool.Modern cellphones:1.They are used as cameras. 3. They are used to send e-mail or surf
the Internet.2. They are used as radios.123New functions are being added to the phones.1.fun &games 2.download music3.electronic calendar4.sending text messages
and images.5.and so on…….No cellhpones hereThe opinion of a headmaster:If a phone starts ringing in the classroom, teachers and students
are disturbed and can not work.The opinion of some parents:They worry that their children will spend too much time and
money on phone call.Why are cellhpones so popular,especially among teenagers?1.We have a need to stay in touch with friends and family no matter where we are or what we are doing. 2. Having a cellphone also makes us feel safer, since we can
call for help in case of an emergency.3. To many teenagers the cellphone is not only a useful tool but also a way to have fun and be cool.Negative Effectsconvenience Positive Effects
safetyspeed
cool factorin school, disturb lessonsspend too much time spend too much moneyharmful radiation…….……..cheat in the examinations Task: Do you agree or not with those words?
“New inventions such as cellphones, laptops, always make our life much easier and more comfortable.”