新课标人教版选修八Book8_Unit5_vocabulary详解.ppt

* 选修8　Unit 5　Meeting your ancestors ●重点单词 1．alternative n. 可能的选择 adj.供选择的；其他的2．starvation n．挨饿；饿死→starve vi.挨饿；饿死3．accuracy n．精确；准确→accurate adj.准确的；精确的4．interrupt vt. vi.打断……讲话；打岔；暂时中断或中止5．assume vt.假定；设想→ assumption n.假定；设想6．sharpen vi. vt.(使)锋利;尖锐;清晰→sharpener n.磨具；削具7．messy adj.凌乱的；脏的→mess n．凌乱，脏8．botany n．植物学→botanical adj.植物学的9．analysis n．分析→analyses pl.→analyse vt.分析 →analyst n．分析者，化验员 10．category n．种类；类别；范畴11．significance n．意义；意思；重要性，重要意义12．delete vt.删；删除13．somehow adv.以……方式；不知怎么地14．academy n．学院；学会；学术团体；院校 15．applaud vi. vt.鼓掌欢迎；赞赏→applause n．鼓掌16．accelerate vi. vt.加速；促进17．arrest vt.逮捕；吸引 n．逮捕；拘留18．dizzy adj.晕眩的；昏乱的；使人发晕或困惑的 ●重点短语 1．regardless of不管；不顾2．at most 至多；最多3．cut up 切碎4．fed up with 受够了；饱受；厌烦5．look ahead 向前看；为将来打算6．date back 追溯到…… Ⅰ.词汇短语过关 1．alternativeadj. 选其一的；替代的n. (两者或两者以上)选择；二选其一；可供选择的东西；替代物　have no alternative but to do sth. 别无选择只好做…… [即学即练] alternative energy _____________ We _____________ but to go on. 除了继续下去，我们别无选择。 可替代能源 have no alternative 2．interrupt vi. 打岔　vt. 暂时中断或中止interruption n. 中断，打断interrupt sb. 打断某人的讲话或正在做的事without interruption 不间断地 [即学即练](1)Traffic was interrupted by a dense fog. (2)It is not polite to interrupt when others are talking. 中断　 打断 His speech was constantly interrupted by applause. 3．assume v. 假定；设想assumption n. 假定，假设(1) The scientists assume that there are no animals on the moon. (2)_____________ (that) it rains, what shall we do? 假如下雨的话，我们怎么办？(3) Scientists believe that human cloning is just a matter of time, but the assumption that human clones have already been born hasn’t been proved yet. ________ Assuming 假想，设想 设想 [即境活用]1) We _______ ________ you understood the situation. 我们认为你了解形势。2) We all can go out for a picnic this afternoon－________that the others agree.A．to assume　　B．assumed C．assume D．assuming assumed that　 D　 4 messy adj. _________ __________  n. 杂乱，脏乱，脏东西；不整洁或乱七 八糟的事常用结构：1.in a mess __________