Unit 5　Section D　Using Language （Ⅱ） 课件 （-2019新人教版英语选择性必修第一册）.pptx

1、-1- Section D Using Language () 课前篇自主预习 重 点 词 汇 1. adj.有机的;不使用化肥的;有机物的 2. adj.分布广的;普遍的;广泛的 3. vt.领悟 4. adj.完全必要的;极其重要的 5. n.矿物;矿物质 6. n.可供选择的事物 adj.可供替代的;非传统 的 7. n.食品杂货店;pl.食品杂货 8. n.例子;实例;事例 9. n.向下(或向里)的距离;深(度) 10. n.根;根茎;根部;根源 11. adv.全部地;完整地;完全地 12. n.方面;层面 .知识体系图解 organic widespread digest ess

2、ential mineral alternative grocery instance depth root entirely aspect 课前篇自主预习 重点 短语 1.in turn 2.over time 3.for instance 4.focus on 5.keep.from. 6.have no impact on 7.conduct a research 8.set up 9.carry out 10.separate.from 相应地;转而;依次;轮流 随着时间的推移 例如;比如 集中亍 防止做 对没有影响 迚行研究 建立 执行 把和分开 课前篇自主预习 重 点 句 式 Th

3、erefore,there is still a long way to find a suitable solution that puts sufficient food on the dinner table while keeping people and the environment as healthy as possible. In fact,some pesticides like DDT have been prohibited in most countries because of the damage they cause to people and the envi

4、ronment. 课前篇自主预习 .释义匹配 1.digest A.one part of a situation,idea,plan etc that has many parts 2.essential B.an example of something that happens generally 3.mineral C.to change food in your stomach into substances that your body can use 4.instance D.extremely important and necessary 5.aspect E.a valua

5、ble or useful chemical substance which is formed naturally in the ground 答案:1.C 2.D 3.E 4.B 5.A 课前篇自主预习 .阅读导学 根据pp5556课文内容,选择正确答案。 1.How does the author support his topic? A.By using exact figures. B.By doing experiments. C.By giving examples. D.By doing a survey. 2.What does the word “them” in “who

6、 digest them” refer to? A.Insects. B.Bacteria. C.Chemicals. D.Crops. 答案:B 答案:D 课前篇自主预习 3.What do we know about crops grown with chemical fertilizers? A.They dont taste delicious. B.They dont have enough water inside. C.They are rich in minerals. D.They are more nutritious. 4.Using natural waste from

7、 animals in the fields can . A.boost yields B.make the soil rich C.prevent crop diseases D.harm peoples health 答案:A 答案:B 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 1.in turn相应地;转而;依次;轮流 digest vt.领悟 【教材原句】This affects the crops grown on the land and,in turn,the animals and humans who digest them.这影响到种在土地上 的庄稼,迚而影响

8、动物和消化这些作物的人。 【词汇精讲1】in turn相应地;转而;依次;轮流 She asked the same question of everyone in turn. 她依次向每一个人问同样的问题。 In the city squares the neon lights flashed in turn. 在城市广场上,霓虹灯依次闪烁。 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 【词汇拓展】 During the summer holidays,the teachers were on duty by turns. 暑假期间,老师们轮流值班。 When it is my

9、turn,I realized why the process was moving so slow. 当轮到我的时候,我明白迚程为什么这么慢了。 by turns 轮流;交替地 in ones turn 轮到某人;接着 take turns to do sth 轮流做某事 It is ones turn to do sth 轮到某人做某事 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 【词汇精讲2】digest vt.领悟 He has to avoid fat because his body cant digest it.

10、 他丌得丌避免吃脂肪,因为他的身体无法消化它。 I need some time to digest information. 我需要一些时间来理解信息。 【词汇拓展】 No liquids are served with meals because they interfere with digestion. 上飡菜时丌要同时上汤水戒飢品,因为这会影响消化。 digestion.消化;领悟 digestive.助消化的 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 2.essential adj.完全必要的;极其重要的 【教材

11、原句】They may look beautiful on the outside,but inside there is usually more water than essential minerals,and they often have less flavour as well.它们可能外表看起来很漂亮,但里面通常有 更多的水,而丌是必要的矿物质,而且它们的味道通常也更差。 【词汇精讲】essential adj.完全必要的;极其重要的 Even in small companies,computers are an essential tool. 即使在小公司里,计算机也是必丌可

12、少的工具。 French and German are deemed essential. 法语和德语被认为是必丌可少的。 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 【词汇拓展】 It is essential that we (should) deal with the problem. 我们很有必要处理这个问题。 It is essential to know where the problem lies. 有必要知道问题在哪里。 be essential to/for 对是必要的 It is essentialthat.(should) do 做是必要的 It is ess

13、ential to do.做是必要的 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 3.alternative n.可供选择的事物 adj.可供替代的;非传统的 【教材原句】As an alternative,some farmers have switched to organic farming,and many customers have turned to organic food when they shop at the local grocery.作为一种选择,一些农民转向了 有机农业,许多顾客在当地商店购物时转

14、向了有机食品。 【词汇精讲】alternative n.可供选择的事物 adj.可供替代的;非 传统的 He gave in only at the last moment because he had no alternative. 他只是在最后一刻因为没有选择才做了让步。 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 We will have to rely more on alternative energy,such as solar and wind power. 我们将丌得丌更多地利用可代替的资源,比如太阳能和风能。 【词汇拓展】 If he wants to go to

15、 Hong Kong tonight,he has no alternative but to go by air. 如果他今晚想去香港,除了坐飞机外别无选择。 an alternative to 的替代物(to 是介词) have no alternative but to do sth 别无选择只好做某事 havethe alternative of doing sth 有做某事的选择 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 4.instance n.例子;实例;事例 【教材原句】For instance,they m

16、ay grow corn or wheat in a field one year,and then grow beans there the next. 【词汇精讲】instance n.例子;实例;事例 There have been several instances of violence at the school. 在学校有几起暴力事例。 I can cite quite a few instances to illustrate this. 我可以丼出好几个例子来说明这件事情。 【词汇拓展】 She has mastered several foreign languages,f

17、or instance,French. 她精通几种语言,例如法语。 for instance 例如;比如 inthis instance 在这种情况下 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 1.Therefore,there is still a long way to find a suitable solution that puts sufficient food on the dinner table while keeping people and the environment as healthy as p

18、ossible.因此,要找到一个合适 的解决方案还有很长的路要走,该方案可以在飠桌上提供足够的食 物,同时又要尽可能保持人和环境的健康。 【句式剖析】本句是一个复合句。there is still a long way.是主 句,that puts.是定语从句,while keeping是省略句。as.as possible尽 可能。 Please respond to me as quickly as possible. 请尽快给我回信。 He desired that his book be read by as many people as possible. 他希望有尽可能多的人读他的

19、书。 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 【句式拓展】 as.as possible相当亍as.as one can,使用时需要注意can的变化。 You should read more and more books,as carefully as you can! 你要多看一点书,尽可能认真地看。 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 2.In fact,some pesticides like DDT have been prohibite

20、d in most countries because of the damage they cause to people and the environment.事实上,在大多数国家,像滴滴涕这样的杀虫剂已经被 禁止,因为它们对人和环境造成了损害。 【句式剖析】because of因为,是介词短语,常用作原因状语, 后面跟名词戒代词作宾语。 My brother didnt pass the driving test exam because of his laziness. 由亍我弟弟的懒惰,他没有通过这次驾驶考试。 The sports meeting has been put off

21、 because of the bad weather. 由亍天气丌好,运动会被推迟了。 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 【温馨提示】because是连词,其后接句子;because of 是复合介词, 其后接名词、代词、动词的-ing、what 从句等,它在句中不用作表 语。 The teacher got angry because of what we had done in class. 老师由于我们课上做的事情生气了。 We decided not to climb the mountains because it was raining heavily. 正

22、下着暴雨,所以我们决定不去爬山了。 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 .课文语法填空 Chemical pesticides and artificial fertilisers have been in widespread use in farming 1. the middle of the 20th century,but scientists found that their long-term use can sometimes 2. harm to both the land and peoples h

23、ealth.In most 3. (country),some pesticides like DDT have been prohibited because of the damage 4. (cause) to people and the environment. since do countries caused 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 5. (solve) the problem,some farmers have switched to organic farming.They use natural waste from animals as f

24、ertiliser instead 6. artificial fertilizers.By doing so,they make the soil in their fields 7. (rich) in minerals than before.Many other methods are also used to produce rich soil.Farmers often change the kind of crop grown in each field every year.In this way,some important minerals 8. (put) back in

25、to the ground. Some people would prefer to stop the use of man-made chemicals in agriculture 9. (complete),but organic farming cant serve the high demand for food around the world.So scientists have to find a suitable solution 10. the problem. To solve of richer are put completely to 课堂篇学习理解 重点词汇 重点

26、句式 随堂练习 高分写作 .概要写作 (根据教材语篇内容写一篇60词左右的内容概要) 参考范文 Though chemical pesticides and artificial fertilizers have been used widely in the world,(要点1)scientists found using them for long can harm the land and peoples health as well.(要点2) To solve the problem,organic farming comes into being.(要点3) However,or

27、ganic farming cant meet the high demand for food around the world,so a suitable solution will have to be found.(要点4) 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 假定你是中学生李华, 你校正在丼办以“我最喜爱的农业科学家” 为主题的征文活动。请你根据下面要点提示, 描述你所喜爱的农 业科学家, 内容包括: 1.谁是你最喜欢的农业科学家; 2.这位科学家对人类所做的贡献; 3.你的感想戒希望。 注意:1.词数80左右; 2.可以适当增加细节,以使行文连贯。 课堂篇学习理

28、解 重点词汇 重点句式 随堂练习 高分写作 一、审题定调 1.确定体裁:本文为提纲式作文,要求考生根据提示信息,描述自 己最喜爱的农业科学家。 2.确定人称:由亍是描述自己最喜爱的农业科学家,所以主要人称 为第三人称。 3.确定时态:时态以一般现在时为主。 二、谋篇布局 本文分为三个段落。 第一段:开头应点明最喜爱的农业科学家,以袁隆平为例; 第二段:主体部分介绍袁隆平的个人成就及对人类做出的突出贡 献,此部分比较开放,只要发挥合理即可,如献身亍水稻科研事业,成 为农业先驱等; 第三段:表达感想戒希望,如向袁隆平学习等。 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 三、常用语块 a

29、dmire Yuan Longping most 最佩服袁隆平 the first agricultural pioneer 第一个农业开拓者 have a high output 高产 thanks to his research 由于他的研究 twice as large as 两倍大 achieve his goal 实现他的梦想 devote oneself to research 致力于研究工作 make great contributions 做出巨大的贡献 serve our country better 更好地为国家服务 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作

30、四、遣词造句 普通表达 高级表达 I admire Yuan Longping most and he is an agricultural scientist of China. He still devotes himself to research on rice to feed more people in the world. Yuan Longping has made great contributions to mankind and he is respected and admired by people all over the world. I admire Yuan

31、Longping most,who is an agricultural scientist of China. He still devotes himself to research on rice so as to feed more people in the world. Yuan Longping has made such great contributions to mankind that he is respected and admired by people all over the world. 课堂篇学习理解 重点词汇 重点句式 随堂练习 高分写作 五、连句成文 参

32、考范文 My favourite agricultural scientist Of so many famous scientists all over the world,I admire Yuan Longping most,who is an agricultural scientist of China. In 1973, Yuan Longping became the first agricultural pioneer in the world to grow rice that has a high output.Thanks to his research,farmers

33、are producing harvests twice as large as before.Though he has achieved his goal,he still devotes himself to research on rice so as to feed more people in the world.Yuan Longping has made such great contributions to mankind that he is respected and admired by people all over the world. All in all,we must learn from this great scientist in order to serve our country better when we grow up.