选修8-Unit5-Meeting-your-ancestors.doc

年 级高二学 科英语版 本人教新课标版课程标题选修8 Unit5 Meeting your ancestors -words、phrases and language points编稿老师冯振宇一校林卉二校李秀卿审核刘晓军一、学习目标：知识目标：学习本单元的词汇、短语和句型能力目标：能够使用这些词汇、短语及句型进行语言表达，并能够解答与之相关的习题二、重点、难点：1. 重点：●重要单词alternative, accuracy, interrupt, assume, significance, accelerate, arrest ●重要短语regardless of, at most, cut up, fed up with, look ahead, date back●重要句型1) We have been excavating layers of ash almost six metres thick, which suggests that they might have kept the fire burning all winter. 2) It must have been very uncomfortable.3) If only she had looked ahead and planned better this year.2. 难点：“情态动词+完成式”的意义三、知能提升（一）重点单词[单词学习]1. alternative n.选择对象；（两者或两者以上的）选择【用法】have no alternative but to do sth.：只能做某事；除……外别无选择【例句】We have no alternative but to go on.除了继续走下去，我们没有选择的余地。

There was no other alternative but to fight till the victory.除了争取战斗到胜利，别无选择拓展】alternative n.[C] 可能的选择，可能性之一近义词：choiceadj.选择性的，二中择一的v. 交替；轮流alternatively adv.交替地，作为另一种选择地alternate vt. 使交替；vi.交替；adj. 交替的；轮流的【考题链接】In this school, the students have three ____courses, and seven ___courses.A. required; alternative B. requiring; alternative C. required; alternate D. requiring; alternate答案：A解题思路：考查词义和词性Require（尤指根据法规）规定、需要，此处用过去分词required修饰courses是因为两者之间为被动关系后一空的意思为选择，选其一，作定语，alternative符合句意。

2. accuracy n.[U]精确性，正确度【例句】I doubt the accuracy of your statement. 我怀疑你的话的正确性He aims at great accuracy.他力求十分准确 【拓展】accurate adj. 正确的，精确的inaccurate adj.不准确的accurately adv.正确地，精确地inaccurately adv.不准确地【考题链接】As his best friend , I can make _______ guesses about what he will do or think.A. vague B. accurate C. particular D. vain答案：B解题思路：词义辨析题根据句意：由于我是他最好的朋友，（故）我能对他的所做所想做出精确的判断所以B项符合句意而vague是“模糊的”意思，particular意为“特别的”，而vain则是“徒劳的”意思3. interrupt v. 中断，打扰，打断，插嘴【例句】Rain interrupted our baseball game.下雨中断了我们的棒球比赛。

The baby interrupted me while I was on the phone.我在打时，婴儿干扰了我 It is rude to interrupt.打断别人的话，是不礼貌的Don't interrupt,” he said. 他说：“别插嘴”考题链接】Traffic in the city was _______ by a snowstorm. A. blocking B. hold up C. interrupted D. hold back答案：C解题思路：考查动词词义辨析及语态虽然block, hold up都可以表示“使停顿”，但是A、B两项的语态错误traffic和谓语动作的关系为被动，只有C项符合4. assume vt. 假设，臆断，猜想【例句】We can't assume anything in this case. 在这种情况下我们不可能做出假设用法】assumption n. 假定，设想，假装，就职on the assumption that 假设……assumed adj. 假定的，假装的，装的【拓展】assume, suppose, presumeassume“假定，设想”，用于逻辑推理，强调一种缺乏证据的结论，以检验某种建议。

suppose意为“根据一定的证据作出的见解”，最不正式presume意为“某人以过去的经验作为依据，对某事作出合乎逻辑的推测”考题链接】We must __________ him to be innocent until he is proved guilty.A. assume B. suppose C. presumed D. pretend答案：A解题思路：考查动词词义辨析根据上面所讲几个词的区别，这里用assume符合句意句意为：直到他被证明有罪之前，我们必须假定他是无辜的5. significance n.意义，意思；重大意义，重要性【例句】This fact has little significance for us. 这一事实对我们没有什么意义They failed to appreciate significance of the precautions.他们没有意识到这些预防措施的重要性拓展】significant adj.重要的，重大的，可观的be of significance= be significant【考题链接】The discovery of these tombs is ____for scholars’ studying the history of the Tang Dynasty.A. of very important B. great significantC. of great significance D. greatly importance 答案：C解题思路：这里important与significant为同义词，且都是形容词，所以A项应该将of去掉，而B项应该将great改为very。

D项需要加介词of，且将greatly改为great，才符合这一句型结构的要求6. accelerate vt.&vi. 加速，促进【例句】We must take measures to accelerate the rate of economic growth. 我们必须采取措施，加速经济增长The car accelerated as it overtook me. 那辆汽车一加速就超越了我用法】acceleration n. 加速度【考题链接】The leader is losing ground as the rest of the runners __________. A. accelerate B. promote C. help D. advance 答案：A解题思路：词义辨析题A项意为加速，B项意为提升，促进，C项意为帮助，D项的意思是促进根据句意：领先者正失去优势，因为其他选手正在加速，可知选A项7. arrest vt. 逮捕，拘留，吸引(注意) n.[C]逮捕【例句】The criminal was arrested yesterday. 罪犯昨天被捕了。

What she did arrested my attention. 她的行为吸引了我的注意力用法】be arrested for sth. 因某事而被捕arrest one’ s attention吸引某人的注意under arrest被捕；被拘留【考题链接】He was ______ for stealing a car.A. accused B. arrested C. sentenced D. charged答案：B解题思路：词义辨析题A项后面的介词应该为of，D项后面的介词则为with，C项sentence的意思为宣判，在这里不合句意所以B项“被捕”正确[即学即练]1. There are several________ plans and it’s up to you to decide which to choose.A. alternative B. according C. effective D. positive2. The description was pretty , so the police couldn't figure out the portrait of the criminal.A. vague B. accurate C. correct D. true3. Production at the factory was ________for two hours because there was no electricity.A. interrupted B. disturbed C. missed D. lost4. These days the government has issued several economic policies that will________ prosperity of manufacturing industry.A. accumulate B. accomplish C. access D. accelerate5. Gao Xiaosong was arrested________ drunken driving on his way home in Bei。