Chapter Four Measures For Computer Security Firewall Antispyware Antis Unit 18 a part 1 Notes to Text L Part4 Extensive Reading Part 2 Word Study Part5 Notes to Passage Part3 Practice on Text Part6 Practice on Passage 2021/2/20 P1
2021/2/20 P.1 Unit 18 Measures For Computer Security Chapter Four @ Part 1 Notes to Text & Part4 Extensive Reading & Part 2 Word Study @ Part5 Notes to Passage @ Part3 Practice on Text @ Part6 Practice on Passage
a Part 1 Notes to text Measures For Computer Security 1)Most large organizations have a disaster recovery plan describing ways to continue operating until normal com puter operations can be restored.大多数大机构都有灾难 恢复计划,用以阐述可以持续到计算机恢复正常运行为止的操作 方式。 注释:现在分词短语 describing ways to…做定语,修饰宾语a disaster recovery plan,相当于 which describes ways to…, 不定式 to continue operating是定语,修饰ways 2)Hardware can be kept behind locked doors, but often employees find this restriction a hindrance, so security is lax.可以将硬件锁在安全门之后,但雇员常常觉得这种约束很麻 烦,因此安全措施也就松弛了 注释:动词短语 find this restriction a hindrance中的名词a hindrance是宾语补足语。常见类似“find宾语+宾补”的动词 A: believe, consider, declare, imagine, know, prove, suppose,feel, think, understand等。而充当宾补的词类有许多, 如不定式、分词、形容词、名词等。 2021/2/20 P2
2021/2/20 P.2 @ Part 1 Notes to Text 1) Most large organizations have a disaster recovery plan describing ways to continue operating until normal computer operations can be restored. 大多数大机构都有灾难 恢复计划，用以阐述可以持续到计算机恢复正常运行为止的操作 方式。 注释：现在分词短语describing ways to …做定语，修饰宾语a disaster recovery plan，相当于which describes ways to…, 不定式to continue operating是定语，修饰ways。 2) Hardware can be kept behind locked doors, but often employees find this restriction a hindrance, so security is lax. 可以将硬件锁在安全门之后，但雇员常常觉得这种约束很麻 烦，因此安全措施也就松弛了 注释：动词短语find this restriction a hindrance 中的名词a hindrance是宾语补足语。常见类似“find+宾语+宾补”的动词 有：believe, consider, declare, imagine, know, prove, suppose, feel, think, understand等。而充当宾补的词类有许多， 如不定式、分词、形容词、名词等。 Measures For Computer Security
3)Many com panies therefore will form a cooperative arrangement to share equipment with other companies in the event of catastrophe.因此,许多公司会与其它公司达成合作协议, 在出现灾难的情况下共享设备。 注释:介词短语 in the event of catastrophe是表时间的状语;不定 式短语 to share equipment.是定语,修饰 a cooperative arrangement.但也可视之为 a cooperative arrangement同位语。 4) Most com panies have ways of trying to keep software and data from being tampered with in the first place.大多数公司首先 就会采取一些方法,极力防止软件和数据被篡改。 注释:of后面的部分是对ways进行说明,因此与ways属于同位关系; 不定式 keep.from(防止……的发生和出现)是动名词 Trying的宾语。 2021/2/20 P3
2021/2/20 P.3 3) Many companies therefore will form a cooperative arrangement to share equipment with other companies in the event of catastrophe. 因此，许多公司会与其它公司达成合作协议， 在出现灾难的情况下共享设备。 注释： 介词短语in the event of catastrophe 是表时间的状语；不定 式短语to share equipment…是定语，修饰a cooperative arrangement。但也可视之为a cooperative arrangement同位语。 4) Most companies have ways of trying to keep software and data from being tampered with in the first place. 大多数公司首先 就会采取一些方法，极力防止软件和数据被篡改。 注释： of后面的部分是对ways进行说明，因此与ways属于同位关系； 不定式keep…from（防止……的发生和出现）是动名词trying的宾语
5) Some federal agencies have suggested that a standard encryption procedure be used so that law enforcement agencies can monitor suspected criminal communicationg 些联邦机构建议采用标准的加密程序,以便执法机构能够监 控疑犯的通信。 注释:由于该句的谓语动词是 suggested,所以宾语从句中的 谓语动词 be used采用了省去 should的虚拟语气形式。动词象 der al nsist quire, request, desire等后面的宾语从句都需要使用“(shou)+动词 原形”的虚拟形式。 G20212120P4GG End 1
2021/2/20 P.4 End 5) Some federal agencies have suggested that a standard encryption procedure be used so that law enforcement agencies can monitor suspected criminal communications. 一些联邦机构建议采用标准的加密程序，以便执法机构能够监 控疑犯的通信。 注释：由于该句的谓语动词是suggested，所以宾语从句中的 谓语动词be used采用了省去should的虚拟语气形式。动词象 demand, propose, order, arrange, insist, command, require, request, desire等后面的宾语从句都需要使用“(should)+动词 原形”的虚拟形式
Part 2 Word Study 1. encryption D.加密 10. screen v.甄别,鉴别;选拔 2. anticipating disasters预防灾难11 applicant n.求职者 3. tamper v.篡改 12. audit v.审计 4. recovery n.恢复 13 enforcement n.执行,实施 5. restriction n.限制 14. wiretap v.搭线窃听,窃听或偷录 6. hindrance n.妨碍,障碍 15. suspected adj.可疑的 7. lax adj.松懈的 16. federal adj.联邦的 8. catastrophe n.灾难 17. the clipper chip加密芯片 9 irreplaceable adi无法替代的18. the key escrow chip密钥托管芯片 个如2PEk
2021/2/20 P.5 End 1. encryption n. 加密 10. screen v. 甄别，鉴别；选拔 2. anticipating disasters 预防灾难 11. applicant n. 求职者 3. tamper v. 篡改 12. audit v. 审计 4. recovery n. 恢复 13. enforcement n. 执行, 实施 5. restriction n. 限制 14. wiretap v. 搭线窃听, 窃听或偷录 6. hindrance n. 妨碍, 障碍 15. suspected adj. 可疑的 7. lax adj. 松懈的 16. federal adj. 联邦的 8. catastrophe n. 灾难 17. the clipper chip 加密芯片 9. irreplaceable adj. 无法替代的 18. the key escrow chip 密钥托管芯片 & Part 2 Word Study