1、高二英语同步精品 选修 8Unit 5 Meeting your ancestors项目 单词及其词性变化（语法填空必备）重点单词1alternative n. 可能的选择alternative adj. 供选择的；其他的2interrupt vt.&vi. 打断讲话；打岔；暂时中断或中止interruption n.打断，中断3somehow adv. 以方式；不知怎么地someway (同义词)4arrest vt. 逮捕；吸引arrest n. 逮捕；拘留5 assume vt. 假定；设想assumption n. 假设6delete vt. 删；删除deletion n. 删除7ac
2、celerate v. 加速；促进8sharpen vi.&vt. (使)锋利，尖锐；清晰sharp adj. 锋利的，尖锐的sharper n. 磨具，削具9messy adj. 凌乱的；脏的mess n. 凌乱，脏10applaud vi.&vt. 鼓掌欢迎；赞赏applause n. 鼓掌11skilful adj. 有技巧的；熟练的skill n. 技能，技巧12starvation n. 挨饿；饿死starve vi. 挨饿；饿死13analysis n. 分析analyses pl.analyse/analyze vt. 分析14significance n. 意义；意思；重要性；
3、重要意义significant adj. 重要的15division n. 分割；划分；分界线divide v. 分割，划分，分配16accuracy n. 精确；准确accurate adj. 准确的；精确的accurately adv. 准确地，精确地17acute adj. 敏锐的，严重的acutely adv. 敏锐地18primitive adj. 原始的，简陋的primitively adv. 最初地19tentative adj. 试探性的，尝试的tentatively adv. 试探性地重点短语.短语检测 1regardless of 不管；不顾2at most 至多；最多3c
4、ut up 切碎4be fed up with 受够了；饱受；厌烦5look ahead 向前看；为将来打算6date .back to 追溯到；始于7arrest sb. for 因而逮捕某人8. with relief 欣慰地9 keep out 阻止进入10turn to sb. for help 向某人求助11be aware of 知道，意识到经典句型（背诵）1 “must have过去分词”表示“对过去的肯定猜测”It must have been very uncomfortable.那肯定不舒服。2if only. 要是就好了If only it could be just l
5、ike last year！要是能跟去年那样有多好呀！3. had done.when.刚刚这时She had almost reached her destination when a delicious smell arrested her progress and she stopped.快到达目的地的时候，一阵香气扑鼻，她停下来，不往前走了。4only to do “结果却” ，表示意想不到或令人失望的结果Abruptly she sat down, only to be scooped up by her laughing, shouting sister, Luna.她突然坐下去，结果被她正又笑又嚷的妹妹鲁娜一把抱了起来
