北师大版（2019）必修第二册Unit4Information technology 词汇课件（17张PPT）

(共17张PPT)
Unit 4
Step 1 Ask and answer
Step 2 Learn new words
Lesson 1 &2
likely
concept
chart
focus
skip
fist
waist
nail
gallery
cyberspace
come true
artificial
climate
global
flood
virtual
reality
virus
affect
rapidly
growth
pessimitic
optimistic
crime
hacker
terrorist
attack
chaos
crash
entertainment
disappear
harm
obvious
destruction
scientific
network
hang on
be up to
fashion
fancy
suggestion
reject
arrangement
project
get in touch
likely
focus on
focus ......on
fix...on
pay attention to
Step 3 Analyse
likely、probable、 posible
virus
affect
affection
effect
infect
Step 3 Analyse
novel coronavirus
pneumonia
a computer virus
a flu virus
crime
criminal
terrorist
terror
terrify
terrorism
Step 3 Analyse
optimistic
optimistically
pessimistic
Step 3 Analyse
scientific
fashion
fashionable
out of fashion
in fashion
Step 3 Analyse
scientifically
science
scientist
fancy
destruction construction
destroy construct
Step 3 Analyse
+{
n.
pron.
v-ing
arrangement
arrange
Step 3 Analyse
Step 4 Find out a right word to match the following definitions.
1.a person who enters other people's computer programmes in secret________
2.the use of computers to make situations feel and look real ________
3.someone who does terrible things to harm countries, goverments and people __________
4.computer system that allows millions of people around the world to share information ________
5. a terrible situation in which everything goes wrong ________
hacker
virtual reality
terrorist
the Internet
chaos
Step 5 Fill in the blanks with proper words.
1.________ (obvious), we don't want to spend too much money on the project.
2.The company paid out over $10 million in an out-of-court ___________ (settle).
3.The chief engineer together with his colleagues has been looking for new __________ (science) methods of farming since five years ago.
4.These plays were a popular form of ____________ (entertain) in the 1920s and 1930s.
5.They provide an environment where you can practice under the ________ (guide) of someone who's good at the language.
Obviously
settlement
scientific
entertainment
guidance
6.Blackpool is the top tourist _________ in England. A number of visitors from all over the world are ________ by the _________scenery there.(attract)
7.The ________ materials became __________ to the enviroment after being dealt with.(harm)
8.The ________ is said to have committed many ______ before being arrested.(crime)
9.In _______, I have __________ that I must stop day dreaming and be ________.（realise）
10.The man _________ that the manager should accept his ___________which he thought were of great value.(suggest)
attraction
attracted
attractive
harmful
harmless
criminal
realized
crimes
reality
realistic
suggested
suggestions
Step 6 Fill in the blanks with what we have just learned.
The internet has greatly _________ our lives. It is likely to be one of the most useful inventions in human history. What can we do on the __________ We can book tickets, find out holiday offers and get all sorts of information from it. We can get in ________ with friends, go shopping as well as work at home on it. It's ___________ that the Internet plays an important part in our life and work. If we ________ traveling in a foreign country, we can also turn to it. Virtual reality can make us feel as if we were really in the place we want to visit. I think no one can _______ its temptation. Perhaps the traditional ways of posting letters and shopping will disappear.
Step 6 Fill in the blanks with proper words.
Some are ______________ about the Internet's future. They fear hackers can attack the banks and governments with computer __________ and steal money or national secrets. They even fear the online violence will harm teenagers. They only focus their attention on its negative aspects. Experts suggest that we should _______ measures to protect the network. Others, however, are optimistic about the Internet’s future. Nowadays, almost every average family owns a computer. In addition, the Net will become part of modern life as it saves us time, money and energy.
David Brown, known as a famous ________ in computer, says, “The Internet has two sides. The point is what we use it for.”
Step 6 Fill in the blanks with what we have just learned.
The internet has greatly _________ our lives. It is likely to be one of the most useful inventions in human history. What can we do on the __________ We can book tickets, find out holiday offers and get all sorts of information from it. We can get in ________ with friends, go shopping as well as work at home on it. It's ___________ that the Internet plays an important part in our life and work. If we ________ traveling in a foreign country, we can also turn to it. Virtual reality can make us feel as if we were really in the place we want to visit. I think no one can _______ its temptation. Perhaps the traditional ways of posting letters and shopping will disappear.
affected
Internet
touch
obvious
fancy
reject
Step 6 Fill in the blanks with proper words.
Some are ______________ about the Internet's future. They fear hackers can attack the banks and governments with computer __________ and steal money or national secrets. They even fear the online violence will harm teenagers. They only focus their attention on its negative aspects. Experts suggest that we should _______ measures to protect the network. Others, however, are optimistic about the Internet’s future. Nowadays, almost every average family owns a computer. In addition, the Net will become part of modern life as it saves us time, money and energy.
David Brown, known as a famous ________ in computer, says, “The Internet has two sides. The point is what we use it for.”
pessimistic
viruses
take
expert
Thanks for listening!