高中英语 Unit5《The Power of nature》学案1 新人教版选修6

Unit 5 The Power of Nature重点、难点及考点解析一、学习重点单词1volcano n.pl. volcanoesan active volcano 活火山an extinct volcano 死火山a dormant volcano休眠火山知识拓展火山学 volcanology -logy: “ 学/论。”oceanology climatology火山学家 volcanologist -ist “学家 ”pianist physicist2. consider大致有两种含义。含义不同，用法有别。知识拓展consider作“考虑”解，常用于以下句型：consider+名词/代词/动名词consider+从句或“疑问词+不定式”。Youd better_.你最好考虑我的建议。Im _abroad some day.我一直考虑有一天出国。Have you considered_?你们考虑他的建议了吗？We must consider_.我们必须考虑下一步要做什么。Keys:consider my suggestion considering going what he suggested; what to do nextconsider作“认为”解时，常用于以下句型：consider sb. /sth+ (as) +形容词/名词 其中，as可以省略。consider +sb./sth.+不定式 其中，不定式通常是to be (可以省略) 或其他动词的完成式。consider +it+形容词/名词+不定式短语consider+宾语从句At first they considered me_.起初他们认为我是医生。We consider this matter_.我们认为这件事很重要。We all consider him _the bike.我们都认为他偷了自行车。We_.我们认为学好英语很难。I consider_. 我认为帮助你学习英语是我的职责。We_. 我们这首音乐很值得一听。Keys:(as) a doctor (to be) very important to have stolenconsider it hard to learn English well it my duty to help you with your studies consider that the music is well worth listening to3. bore vt 使(人)厌烦-I am sorry I spoke for so long-I hope I didnt bore you.bored adj. (人) 厌烦的boring adj. （物）令人厌烦的Are you getting bored of doing the same thing everyday?The movie was so boring that I fell asleepThe life is more and more boring, so many people become more and more bored.生活越来越无聊,所以很多人也变得越来越无聊4effort n. 努力; 力气; 努力的成果make an effort to do sth 努力做某事：It took a lot effort to lift the boxes.抬起那些箱子要花很大的力气。Despite all our efforts we still lost the game.尽管我们尽了全力，我们还是输掉了比赛。Put more effort into your work.你要更加努力地工作。Your success lies upon your effort.你成功与否取决于你的努力。He made an effort to arrive on time他尽量准时到达。5risk n. 风险，危险：He was taking a risk by overtaking on a bend. 他在转弯处超车是在冒险。The house is a fire risk. 这房子有起火的危险短语联想：at risk 在危险中:You are at risk if you dont wear a seat belt. 不系安全带真的会有危险。at the risk of 冒危险：At the risk of seeming rude, I must refused your request, Im afraid.尽管似乎无理，恐怕我还是必须拒绝你的要求。6vary v. 呈现不同 ；改变，变化:My husband varies the vegetables he plantseach year.我的丈夫每年都种不同的蔬菜。vary fromto 由到不等；从变为 :These fish vary in price from 3 to 5.这些鱼的价格从3镑到5镑不等。Her mood varied from optimism to extreme depression.她的情绪由乐观一变而极为消沉。variety(质量，种类或特征的)变化：You need a lot of variety in your diet.你的膳食要多样化种类，品种：different varietes of bananas不同品种的香蕉diversity n. 变化多样，多样性 (相当variety):The plants of Asia show a great diversity of form. 亚洲的植物形态多种多样。There must be a diversity of opinions. (对此)准是众说纷纭。7warn sb. (of /against sth.)sb. to dosb. that1)I wont warn you again.2)The people were warned of the danger of flooding.3)The doctor warned me not to drink.（The doctor warned me against drinking.)4) I warn you that it is dangerous to go out alone at night.8absolute adj. 完全的，真实的Its an absolute fact.absolutely adv.完全地，无条件地,完全对absolutely right 十分对，对极了，当然（口语，作为对一问题的回答或评语）你让你的孩子晚上单独行走吗？当然不是。-Do you let your kids walk alone at night?-Absolutely not.二、重点短语1burn to the ground (楼房等)完全烧毁他无处栖身因为他的房子被烧掉了.He has no place to live in because his house has been burnt to the ground.知识拓展burn up 烧完; 烧尽; 烧光;烧旺起来burn down烧成平地(烧毁,烧光)burn off烧掉burn out烧掉Dont leave the gas on you might burn the house down.别忘了关煤气炉-不然会把房子烧掉的.The house burnt down in half an hour.那所房子在半小时之内就被焚为平地.All the wood has been burnt up.木柴全部烧光了。burn off 烧掉Burn the old paint off before re-painting the door.先把门上的旧漆烧掉再上新漆.burn out 烧掉The hotel was completely burnt out.该旅馆毁於大火.If he doesnt stop working so hard, hell burn himself out.他继续这样拚命地工作，就会累垮的。2 make ones way （向某地）走（去）make ones way in life 事业有所成就make way (for) 让路，让位He made his way through the crowd to greet us.他穿过人群向我们打招呼。All the traffic has to make way for a fire engine. 所有的车辆都得给救火车让道。If you want to make your way in the world, you must learn to work hardwhile you are still young. 你若想要有出息，趁年轻的时候要学会发奋。知识拓展feel one way摸索前进push ones way挤过find ones way找到路，设法到达go ones way走自己的路，我行我素fight ones way奋勇前进wind ones /its way蜿蜒前进lose ones way迷路3be enthusiastic (about) 感兴趣的，热心的He is enthusiastic about helping others .他热心助人。Im really very enthusiastic about it.我对此真的非常热心。Despite all our efforts we still lost the game.三、重点句型Having collected and evaluated the information, I help other scientists to predict where lava from the volcano will flow next and how fast it will flow.本句为ing形式的完成式作状语。如果分词表示的动作在谓语动词表示的动作之前发生，该分词用完成式。 例如：Not having met the man before, I could