Unit 1 Tales of the unexplained1 、 assume vt . 假定, 设想assume sb./sth. to be 假定 / 假设某人 / 某事为It is assumed that… …… 被认为◆Don't always assume the worst. 别总往最坏处想。◆I have always assumed her to be American. 我一直认为她是美国人。assumption n. 假定,假设make an assumption 认为,假定assuming that… 假定,假设 ( 引导条件状语从句 )①I hope to go to college next year, I pass my exams. 如果我能通过考试, 我希望明年能上大学。①assuming that②A lot of people poverty only exists in Africa. 许多人认为贫困仅仅存在于非洲。②make the assumption that2 、 witness vt. 目击,目睹 ( 尤指罪行或事故的发生 ) ,亲身经历 ( 重要事件或变迁 ) n. 证明;证人,见证人◆They are the witnesses at the scene of the accident.他们是事故现场的目击者。◆His ragged clothes were a witness to his poverty.他的破烂衣服可以证明他的贫穷。①We __________ the most important scientific development of the century. 我们亲身经历本世纪最重要的科学进展。①were witnessing②Several villagers the air crash in which 8 people were killed. 几位村民目睹了这起造成 8 人罹难的空难。②witnessed③The police wanted to know whether there was someone who ______ the robbery. A. witnessed B. stared C. looked D. proved③A “根据句意 警察想知道是否有人目击这次抢”“”劫 。根据句意可知,此处应选 目击、看到 之意。witness 目击,见证 ( 正式的法律用语 ); stare 凝 视,盯着看; look 看; prove 证明。3 、辨析 lately, late, later, latter, latest(1) lately 作副词相当于 recently“”,表示 最近,近来之意,强调时间点,多用过去时;表示时间长度,多用完成时,但不可用于将来时态中。◆I haven't been sleeping well just lately.我最近没睡好觉。(2) late 作副词时表示时间上的晚或迟。(3) later“”作形容词时,表示 以后的,后期的 ;作副“”词时表示 后来,较晚地 ,还可与表示时间的名“词连用,表示 ……”之后 ,用于过去和将来。(4) latter 用作形容词,常与...