精选优质文档-倾情为你奉上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fre
