选修八unit3知识点

Unit 3 Inventors and inventions单元要点预览 （旨在让同学整体了解本单元要点）词汇部分词语辨析1. discover / find / invent 2. hope / wish / expect 3. bear / endure / stand / tolerate 4. set off / set out / set about 词形变化1. mercy n.仁慈，宽容merciful adj. 宽恕的merciless adj.残忍的；无情的2. abrupt adj.突然的，意外的；唐突的，鲁莽的abruptly adv.突然地；粗鲁地3. expect vt. 期待，预期，指望expectation n. 期待，预料，指望，展望unexpected. adj. 想不到的，未预料 unexpectedly adv. 出乎意料地，想不到地4. freeze v.(使)冻结， (使 ) 结冰n.冻结；冰冻期freezing n. 冰点adj. 冰冻的，严寒的/ 5. practise vt.&vi. 实行；练习；实习practice n. 练习，实习，实践，习俗practical adj. 实际的，实践的，实用的重点单词1. distinguish 辨别；辨认； （常与 from, between 连用）区别；区分2. convenient adj. 便利的，方便的3. seize vt. 抓住，捉住；占据； （指强烈的感情）突然影响或控制（某人）4. file n.[c] 文件；档案vt. 把 ⋯⋯ 归档5. hang vt.& vi. (hung; hung) 悬挂，附着vt. (hanged; hanged) 吊死，绞死重点词组1. call up 征召；召集服兵役；唤起；使人回忆；带入心中；打电话给某人2. set about sth/doing sth (不用於被动语态) 开始（某工作） ；着手做某事3. (every) now and then/again 时而；偶尔；有时4. out of order 次序颠倒；发生故障5. get through 用完，消耗掉； （设法）做或完成某事；通过；与某人联系6. ring back 回复电话7. in case 因为可能发生某事；以防万一；万一重点句型1. The first thing I tried to do was to see if there were products that might help me, but there only seemed to be powders designed to kill snakes. 2. Between the outside and inside walls of the bowl there is some jelly, which freezes hard when cooled. 重点语法复习过去分词做表语和宾语补足语（见语法部分）语言要点（模块）Ⅰ.词语辨析(旨在提供完形填空所需材料) 1. discover / find / invent 【解释】discover 表示 “偶然 ”或“经过努力 ”发现客观存在的事物、真理或错误。fin...