3 . 词性转换
1. infection n. 感染；传染→________ vt.使感染；传染→________ adj.受感染的；被感染的
2. proof n. 证据；证明；检验→________ v. 证明，证实
3. pure adj.干净的；纯的；纯粹的→________ adv.纯粹地；仅仅→________ vt.使……纯净→________ adj.纯净了的
4. transform vt.使改观；使改变状态 vi.改变；转变→________ n. 变化；转换
5. intervention n. 介入；出面；干涉→________ v. 出面；介入；插嘴

4 . 词性转换
1. severe adj. 极为恶劣的；十分严重的；严厉的→________ adv. 严重地；严格地，严厉地
2. infection n. 感染；传染→________ vt. 使感染；传染→________ adj. 传染性的；感染的（尤指通过呼吸）
3. pure adj. 干净的；纯的；纯粹的→________ v. 净化
4. transform vt. 使改观；使改变形态 vi. 改变；转变→________ n. 变化；转变；变换
5. thinking n. 思想；思维；见解→________ v. 认为；思考
6. finding n. 发现；调查结果；(法律)判决→________ v. 发现 →________ n. 发现者
7. mechanical adj. 机械的；发动机的；机器的→________ n. 机械师；机械修理工
8. defend vt. 保卫；防守；辩解→________ n. 防护；辩护
9. assistant n. 助理；助手 adj. 助理的；副的→________ v. 帮助；协助；援助→________ n. 帮助；协助；支持
10. gifted adj. 有天赋的；有天才的；天资聪慧的→________ n. 礼物；天赋
11. steady adj. 稳定的；平稳的；稳步的→________ adv. 平稳地；持续地
12. vivid adj. 生动的；鲜明的；丰富的→________ adv. 生动地

6 . 词性转换
1. adjust [vt. & vi.]调整，调节；适应，习惯；整理→____________ [n.]调整，调节
2. evidence [n.]证据，证明；物证，人证 [vt.]证明，表明→____________ [adj.]显而易见的
3. clinic [n.]私人诊所；门诊部；门诊时间→____________ [adj.]临床的
4. examine [vt.]检查，检验；审查，调查；考，测试；审问→____________ [n.]检查，考试
5. severe [adj.]十分严重的，极为恶劣的；严厉的；艰难的→____________ [adv.]严重地→____________ [n.]严重性，严峻
6. anxiety [n.]焦虑；担心；渴望→____________ [adj.]焦虑的，担心的
7. phenomenon [n.]现象→____________ (复数)
8. infection [n.]传染，感染→____________ [vt.]传染，感染→____________ [adj.]传染性的，感染的
9. relate [vt. & vi.]联系，使有联系；叙述，讲述→____________ [adj.]有联系的→____________ [n.]关系；亲属→____________ [n.]联系，关系
10. symbol [n.]象征；符号，代号→____________ [vt.]象征

8 . 根据句意，选择单词或短语并以其适当形式填空。

tragic     relieve     harmony     influence     assist     special     infect     devote     liberal     collaborate     assist

1. A ________ always concludes with the hero’s or the heroine’s death.
2. Laughter is one of the most ________expressions of emotion.
3. They’ve picked up a really serious________ from something they’ve eaten.
4. Seeing people of different nationalities live together________is a real pleasure.
5. Any ________you could give the police will be greatly appreciated.
6. The shop________ received me indifferently while leaning on a counter.
7. Leslie Nielsen’s ________to acting is wonderfully inspiring. He built a hugely successful career with little more than plain old hard work and determination.
8. There are deep________in the country over the war.
9. Edgar Snow was an American journalist who wrote i________books and articles about China in the 1930s.