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沪教版（五四学制）八年级上册Unit2 Digital life语法专项预习
知识点梳理
1.现在完成时的被动语态
结构：have/has + been + 过去分词
用法：表示过去发生的动作对现在造成的影响或结果，且主语是动作的承受者
例句：Many traditional jobs have been replaced by computers.
小试牛刀： The digital divide ______ (discuss) many times in recent years.
答案：has been discussed
2.情态动词的被动语态
结构：情态动词 + be + 过去分词
常用情态动词：can, may, must, should等
例句：Personal information should be protected carefully.
小试牛刀 Cyberbullying ______ (must/avoid) in digital life.
答案：must be avoided
动词不定式作主语
结构：To + 动词原形 + 谓语
常用形式主语it替代：It is + adj. + to do
例句：To master digital skills is important. = It is important to master digital skills.
小试牛刀 ______ (learn) new technologies is necessary for modern workers.
答案：To learn
动名词作宾语
常接动名词的动词：enjoy, finish, practice, avoid等
例句：Many teenagers enjoy playing online games.
小试牛刀 We should avoid ______ (share) too much personal information online.
答案：sharing
5.状语从句（时间/条件）
时间状语从句：when, while, as soon as等引导
条件状语从句：if, unless等引导
例句：When you use social media, you should be careful.
小试牛刀 ______ you don't protect your password, your account may be stolen.
答案：If
知识演练场
I. 用所给动词的正确形式填空
1. Many new apps ______ (develop) this year.
2. Your personal data ______ (should/protect) carefully.
3. ______ (balance) online and offline life is challenging.
4. He avoided ______ (answer) the strange message.
5. When I ______ (receive) an email, I will reply immediately.
II. 句型转换
1. People have discussed digital privacy widely.（改为被动语态）
Digital privacy ______ ______ ______ widely.
2. You must update your antivirus software.（改为被动语态）
Your antivirus software ______ ______ ______.
3. To understand AI technology is difficult.（用it改写）
______ is difficult ______ ______ AI technology.
4. She enjoys posting photos on social media.（对划线部分提问）
______ ______ she enjoy ______ on social media
5. If you don't log out, others may see your messages.（改为同义句）
______ you log out, others may see your messages.
III. 选择最佳答案
（ ）1. The problem of cyberbullying ______ seriously recently.
A. has been discussed B. has discussed C. is discussing
（ ）2. Personal information ______ with strangers online.
A. shouldn't share
B. shouldn't be shared
C. shouldn't be sharing
（ ）3. ______ too much time on smartphones is unhealthy.
A. Spend B. To spending C. Spending
（ ）4. He finished ______ his digital project at midnight.
A. do B. doing C. to do
（ ）5. When I ______ my homework, I check my messages.
A. finish B. will finish C. finished
IV. 完形填空
Digital technology (1)______ our lives greatly in recent years. Many traditional ways of communication (2)______ by new methods. Photos (3)______ be shared instantly through social media. However, problems (4)______ if we're not careful. Private information (5)______ with strangers. Therefore, we (6)______ cautious when using digital devices. (7)______ responsible online is everyone's duty. Before (8)______ personal details, think twice. Remember that once information (9)______ online, it (10)______ completely.
1. A. changed B. has changed C. was changing
2. A. have replaced B. have been replaced C. replaced
3. A. can B. can be C. could
4. A. may occur B. may be occurred C. occurred
5. A.shouldn't share B.shouldn't be shared C. not shared
6. A. should be B. should C. must to be
7. A. Be B. To be C. Being
8. A. post B. posting C. to post
9. A. is posted B. posts C. has posted
10. A. can't delete B. can't be deleted C. not deleted
V. 阅读理解
A. 阅读判断（T/F）
The digital revolution has transformed how we live and work. Many jobs that existed 20 years ago have disappeared, while new jobs like social media managers have emerged. Digital skills have become essential in almost every field.
However, this transformation has also created challenges. Many workers find their skills outdated. The elderly often struggle with new technologies. Cybersecurity threats are increasing. To adapt to this changing world, continuous learning is necessary.
（ ）1. All jobs from 20 years ago still exist today.
（ ）2. Digital skills are important in most fields.
（ ）3. Only young people face digital challenges.
（ ）4. Cybersecurity is becoming less important.
（ ）5. People need to keep learning new skills.
B. 阅读选择
The concept of digital citizenship is becoming increasingly important. A good digital citizen:
Protects personal information
Respects others online
Uses technology responsibly
Balances online and offline activities
Keeps learning new digital skills
Schools are now teaching digital citizenship to help students navigate the online world safely. Parents are also encouraged to discuss online safety with their children.
（ ）6. What is NOT mentioned as a quality of good digital citizenship
A. Sharing passwords with friends
B. Protecting personal information
C. Respecting others online
（ ）7. Who is teaching digital citizenship
A.Only parents B.Only schools C.Both schools and parents
（ ）8. Why is digital citizenship important
A. It helps people use technology safely
B. It makes people spend more time online
C. It prevents all cybercrimes
（ ）9. What should parents do according to the text
A. Prevent children from using the internet
B. Discuss online safety with children
C. Ignore children's online activities
（ ）10. What is the main idea of the passage
A. The dangers of the internet
B. How to be a responsible digital citizen
C. New digital technologies
答案
I. 用所给动词的正确形式填空
1. have been developed 2. should be protected 3. Balancing
4. answering 5. receive
II. 句型转换
1. has been discussed 2. must be updated
3. It, to understand 4. What does, doing 5. Unless
III. 选择最佳答案
1-5 ABCBA
IV. 完形填空
1-5 BBBAB 6-10 ACBAB
V. 阅读理解
A: 1-5 FTFFT B: 6-10 ACABB

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