新版高中英语选择性必修一Unit5-Working-the-land词汇讲解课件

1、Unit 5Working the Land词汇讲解1.devote v. 致力于，奉献于； 把用于，作专用； 词形及短语：devoted adj. 献身的；忠诚的devotion n. 献身，奉献；忠诚；热爱devote oneself to sth 把.奉献给.，作.用be devoted to 投身于；献身于I could only devote two hours a day to the work. 我一天只能在这个工作上花两个小时。 Her devotion to the job left her with very little free time. 她全身心投入工作，几乎没有闲

2、暇。2. shortage n. 缺乏，缺少；不足， 复数 shortages a shartage of. 缺乏 a shartage of water resources 水源短缺 There is an acute shortage of water. 水严重短缺。拓展复习：short adj. 短的；不足的；矮的，低的shorten vt. 缩短；减少；变短 vi. 缩短；变短be short of. 缺少.，.是短缺的. 3. crisis n. 危机；危险期；决定性时刻 复数 crises financial crisis 金融危机economic crisis 经济危机credi

3、t crisis 信用危机4. convince vt. 说服；使确信，使信服 短语归纳：convince sb to do 说服某人做某事convince sb of sth 使某人信服某事词形拓展：convincing adj. 令人信服的；有说服力的 （描述事物的特征）convinced adj. 确信的；深信的 （描述人的感受）He convinced her to go ahead and marry Bud.他说服了她嫁给巴德。She sensed Thomas could convince anyone of anything. 她觉得，托马斯能说服任何人相信任何事5. atta

4、in vt. & vi. 达到，实现；获得；到达词形拓展：attainable adj. 可得到的；可达到的；attainment n. 达到；成就；学识 The cheetah can attain speeds of up to 97 kph. 猎豹的奔跑速度每小时可达97公里。 This standard is easily attainable. 这个标准容易达到。6. assumption n. 假定；设想；担任；采取 复数 assumptions 拓展学习：make an assumption that.假定. assume vi. 设想；承担；采取 The common assu

5、mption then was that it could not done. 当时人们通常设想那是不可能做到的。7. overcome vt. & vi. 克服；胜过 过去式 overcame ； 过去分词 overcome 例：overcome a problem/a feeling of anxiety 短语归纳： be voercome by.被.困扰 be overcome by fear/despair/depression被恐惧/失望/抑郁困扰8. expand vt. & vi. 扩张；使膨胀；详述，发展； 张开，展开 1）The attempt to expand the b

6、usiness was a catastrophe for the firm. 扩展业务的尝试使这家公司陷入困境。 2） Metals expand when they are heated. 金属受热会膨胀。 3） Could you expand on that point, please? 请你把这一点详细说明一下好吗？9. estimate n. & v. 估计，估价；判断，看法 ，估量； 评价拓展：estimated adj. 估计的；预计的；估算的Its estimated that. 据估计.Try to estimate how many steps it will take

7、to get to a close object.估计一下需要多少步才能到达一个近距目标。I can give you a rough estimate of the amount of wood you will need. 我可以粗略估计一下你所需要的木材量。10. domestic adj. 国内的；家庭的；驯养的；Domestic violence is a regular occurrence in some families. 在某些家庭中，家庭暴力是常事。domestically adv. 国内地；家庭式地；domestically and internationally在国内和

8、国际11. consumption n. 消费；消耗；肺痨 复数 consumptions low power consumption 低能耗water consumption耗水量 fuel consumption 耗油的拓展：consume vt. & vi.消耗，消费；挥霍，耗尽； time consuming 耗时的，费时的Many people are unaware of just how much food and drink they consume. 许多人不知道自己到底消耗掉多少食物和饮料。12. comprise vt. 包含；由组成 be comprised of. 由

9、.构成的整体comprise/be comprised of部分Today, it is estimated that about 60 percent of domestic rice consumption is comprised of crops generated from Yuans hybrid strains. 今天，据估计，大约60%的国内大米消费是袁隆平的杂交品种 种出来的作物。13. widespread adj. 分布广的, 普遍的, 广泛知识归纳：(1) a widespread disease 流行病 in widespread use 广泛应用(2)widely

10、adv. 广泛地, 大大地Warm winter may cause a widespread disease。English is widely spoken in the world. 英语在世界上被广泛使用。 14. in turn 相应地, 转而, 依次, 轮流【词块积累】 by turns 轮流, 交替take turns轮流, 依次People try to avoid public transportation delays by using their own cars, and in turn this creates further problems. 人们通过使用自己的小

11、汽车努力去避免公共交通的延迟, 而这又反过来产生进一步的问题。15. essential adj. 完全必要的; 极其重要的用法积累：be essential to/for 对很重要It is essential that . . . (should) do. . . “做是完全必要的”It is essential for sb. to do. . . “对某人来说做是完全必要的”Sun and water are essential to the growth of crops. It is essential for us to set our goal realistically. F

12、ood is essential to life. 16. alternative n. 可供选择的事物 adj. 可供替代的, 非传 统的【词块积累】(1)have no alternative but (to do) 除(做)外别无选择(2)(同义词)choice n. 选择, 选择权make a choice做选择have no choice but to do别无选择只好做alternative energyFinding himself under fire from all quarters, he had no alternative but toabandon his sche

13、me. 17. instance n. 例子, 实例, 事例【词块积累】for instance 例如in the first instance第一, 首先For instance, they may grow corn or wheat in a field one year, and then grow beans there the next. 例如, 他们可以一年在田里种植玉米或小麦, 然后下一年在那里种植豆类。18.depth n. 向下(或向里)的距离, 深(度) 【词块积累】(1)in depth 完全地, 深入地(2)deep adj. 深的 adv. 深深地(3)deeply adv. 深深地, 强烈地(4)deepen v. (使)变深, (使)加深【