资源简介

(共12张PPT)
选择性必修一
Unit5知识复习
一.词性转换
1. devote vt. 把…献给，专心于→devoted adj. 专心的，致力的→devotion n. 致力，专心
2. convince vt. 使相信；使确信→convinced adj. 确信的→convincing adj. 使某人信服的
3. characteristic n. 特征；adj. 典型的→character n. [C]角色；品质；文字→characterize v.成为...的特征；是...的典型；描述；刻画
4. conventional adj. 传统的，习惯的→convention n. 传统
5. assumption n. 假定，设定→assume v. 假设→assuming conj. 假定；假设
6. expand vt. 扩大→expansion n. 扩大
7. consumption n. 消耗→consume v. 消耗→consumer n. 消费者
8. nutritional adj. 营养物的→nutritious adj. 有营养的→nutrition/nutrient n. 营养
9. digest vt. 消化→digestion n. 消化
10. depth n. 深度→deep adj. 深的→deeply adv. 深深地→deepen v. 加深
11. entirely adv. 全部的，完整的→entire adj. 全部的，整个的
12. shortage n. 不足；缺少；短缺→short adj. 短的；缺乏的→shortly adv. 短暂地→shorten v. 使变短
13. attain vt. (通常经过努力)获得；达到(某年龄/水平/状况)→attainable adj. 可得到的；可实现的→attainment n. 达到；成就
14. estimate vt. 估计；估价；估算→estimation n. 估算；看法→overestimate v. 高估→underestimate v. 低估
15. domestic adj. 国内的；家庭的→domestically adv. 国内地；家庭式地
16. generate vt. 产生；引起→generator n. 发电机；生产者→generation n. 一代；产生
17. reality n. 现实；事实→realize v. 实现→real adj. 真实的→really adv. 真地；非常
18. chemical adj. 化学的 n. [C] 化学品→chemistry n. 化学→chemist n. 化学家；药剂师
19. mineral n. 矿物质→mine n. 矿 ；我的（东西）→miner n. 矿工
20. poverty n. 贫穷；贫困→poor adj. 贫穷的
21.intense adj.热切的；十分强烈的；激烈的→intensity n.强烈；（光、声音等）强度
二、短语识记
1. devote oneself to = be devoted to 献身 ；专心于…
类似的表达： be buried in/ be absorbed in/be dedicated to/put one’s heart into doing sth.
2.a shortage of 缺乏 be short of 不足；缺乏
be short from 是...的缩写
3.yield to =give in to=give way to屈服于
4.convince sb. of sth. 使某人确信某事
convince sb. to do sth. convince sb.that …
5.It is assumed that… 人们（普遍）认为……
with an assumption of= on the assumption that… 假设……
assume sb./sth. to be ...假定某人、某事为.....
assuming that...假设、假定....
二.短语聚集
6.expand on/ upon sth. 详细阐述某事
7.It is estimated that… 据估计……
8.be comprised of = be composed of, consist of, be made up of
9. in reality =in fact= as a matter of fact=actually 事实上
10.in one’s turn 轮到某人；接着 by turns 轮流；交替
take turns to do/doing sth. 轮流做某事
It’s one’s turn to do sth. 轮到某人做某事 in turn 轮流；反之
11.have no alternative/choice but to do sth.=do nothing but do sth.
an alternative to... ... 的代替物
12.in depth 深入地；详细地 the depths of winter 隆冬
三、经典句式。
1．给我印象最深的是，每当我遇到困难时，我的叔叔都会激励我坚持我的梦想。
What impresses me most is that my uncle will always motivate me to stick to my dream whenever I come across difficulties.
2．如何能说服大卫接受挑战是我正在思考的事情。
How I could persuade David to accept the challenge was what I was thinking about.
3．我们能否保护海洋取决于我们从现在起将会做些什么。Whether we can protect our oceans depends on what we will do from now on.
三、经典句式。
4．鉴于你对中国传统文化如此感兴趣，我邀请你参加我们学校的文化艺术节。
Given that you are so interested in traditional Chinese culture，I invite you to take part in the Culture and Art Festival in our school.
5．我经常读英文报是因为它对我英语学习的进步有很大的帮助。
Why I regularly read the English newspaper is that it contributes a lot to my progress in English learning.
四、应用文写作。
1．我相信，被誉为“杂交水稻之父”的袁隆平是中国农业发展中最具影响力的人物之一。(convince)
2．他毕生致力于研发高产水稻品种，这些品种极大地增加了中国的粮食产量，并帮助许多发展中国家缓解了饥饿。
3．面对研究经费和先进研究设备的短缺，他没有放弃，而是竭尽全力逐个克服这些困难。(shortage；overcome)
I am convinced that Yuan Longping，known as the“Father of Hybrid Rice”，is one of the most influential figures in China’s agricultural development.
He devoted his entire life to developing high-yield rice varieties，which have greatly increased China’s food production and helped alleviate hunger in many developing countries.
Faced with the shortage of research funds and advanced research equipment，he didn’t give up but spared no effort to overcome them one by one.
四、应用文写作。
4．鉴于他已经实现了自己想要的，很多人可能会认为他会退休过悠闲的生活，但他没有。(given that...)
5．即使在晚年，他仍在不断地追求梦想，研发产量更高的品种，这对我们所有人都是一种激励。(strain；yield；定语从句)
Given that he had achieved what he wanted，many people might think he would have retired to a life of leisure，but he didn’t.
He kept on dreaming up and developing strains with higher yields even in his later years，which serves as an inspiration to us all.
五、主题读后续写。
尽管发生了天气灾害，农民们还是勇敢地克服了一切困难，期待着丰收。确实，据估计收成可能会增产，而不是歉收。所有的村民都来见证这激动人心的收获时刻。看到一望无尽金色的麦田，他们的眼睛里闪烁着喜悦和兴奋。甚至连那些不能到田间劳作的老人也来了。他们眯起眼睛，微笑着交谈，并赞扬忙于收割的年轻人。一些孩子聚在一起，目不转睛地盯着几只蟋蟀，这些蟋蟀不知什么原因失去了一条腿。总之，无论是在田间还是地头的人们都被这一幕和谐的景象所征服。
五、主题读后续写。
In spite of the weather disaster，farmers had bravely overcome all difficulties and looked forward to a good harvest.Indeed，instead of poor harvests，it was estimated that a boost may be possible.All villagers came to witness the exciting harvest time.Seeing the golden wheat field stretching as far as they can see，their eyes were shining with joy and excitement. Even the old who couldn’t work on the land came.They narrowed their eyes，talked with smiles and praised the young busy with harvesting.Some children gathered together，their eyes fixed on some crickets that for unknown reasons had lost one leg.All in all，people whether in the field or on the ground were overcome with such an harmonious scene.

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