2021新版人教版选修二英语Unit 5 教学知识细解码 同步讲解 .doc

1、1radiate vt.发射出(光、热等) radiation n辐射；放射线 2metre n米millimetre n. 毫米；千分之一米 3minor adj.较小的；次要的；轻微的minority n少数；少数民族 4urgent adj.紧急的；急迫的；急切的urgency n紧迫；急迫；急事 5loose adj.松的；未系紧的；宽松的loosely adv.松弛地；零散地 1acid n酸 adj.酸的；酸性的；尖刻的 Everyone doesnt like to hear the acid remarks. 尖刻的 This chemical acts as a part o

2、f an acid in our experiment. 酸 Cars cause pollution，both smog and acid rain. 酸的；酸性的 2minor adj.较小的；次要的；轻微的 n未成年人；辅修科目 He had three minors this semester. 辅修科目 This is a very minor operation and there is very little risk involved. 较小的 The law forbids shops to sell alcohol to minors. 未成年人 Words And Phr

3、ases 知识要点1 technique n技能；技术；技艺 (教材 P50) What first- aid techniques do you know of? 你知道哪些急救技巧？ 例 1 The new technique works better than the one it has replaced. 这项新技术比之前的效果要好。 例 2 She needs to work on her interview technique if shes going to get a job. 如果她想找到工作，就需要在面试技巧上下功夫。 翻译 处理那类问题他有特殊技巧。 He has a

4、special technique for dealing with problems of that sort. 知识拓展 have a technique for 有的技术 technique in 方面的技术 即学即练 单句语法填空 They learn basic techniques in selfdefence. Dick Fosbury had a new technique for doing the high jump. 知识要点2 sense of touch 触觉 (教材 P50) It also helps control your body temperature，p

5、revents your body from losing too much water， warns you when things are too hot or cold， and gives you your sense of touch. 你的皮肤是抵御疾病、毒素和阳光的屏障。它还有助于控制体温，防止身体 失去太多的水分，当东西太热或太冷时，给你警告，并使你有触觉。 例 1 His sense of touch gradually took the place of sight. 他的触觉逐步代替了视觉。 例 2 Newly developed robots have a sense

6、of touch and are able to see and make decisions. 新开发的机器人有触觉，可以看见物体，还能做决定。 翻译 他们非常相信自己的触觉。 They trusted their own sense of touch very much. 知识拓展 sense of responsibility/duty 责任感，责任心 sense of humor 幽默感，幽默 sense of belonging 归宿感，归属感 sense of smell 嗅觉 sense of beauty 美感；审美感 sense of direction 方向感 即学即练 完

7、成句子 Good chef must have a good sense of smell. 好厨师必须有好嗅觉。 He had a poor sense of direction and soon got lost. 他方向感很差，一会儿就迷路了。 He is distinguished for his sense of humor 他以其幽默感著称。 知识要点3 minor adj.较小的；次要的；轻微的 (教材 P50) Examples include mild sunburn and burns caused by other minor household incidents. 例

8、如轻微的晒伤和其他轻微的家庭事故造成的灼伤。 例 1 Thats a relatively minor matter.We can leave it till later. 相对来说那是件小事。我们可以把它留到以后解决。 例 2 Even minor head injuries can cause long- lasting psychological effects. 即使是轻微的头部创伤也会对心理产生长期影响。 翻译 就是小问题才会累积。 Its the little minor problems that add up. 知识拓展 (1)a minor matter 小事 a minor

9、 party 少数党 (2)minority n U，C少数民族；少数 a/the minority of 少数的 be in the/a minority 占少数 即学即练 单句语法填空 This is a minor matter，but I actually think it is my life biggest pain. It is reported that women are in the minority at the meeting. Its clear that only a minority of people support these new laws. 知识要点4

10、loose adj.松的；未系紧的；宽松的 (教材 P51) Cover the burnt area with a loose clean cloth. 用一块宽松的干净布覆盖烧伤区域。 例 1 She is wearing a loose dress. 她穿着一件宽松的连衣裙。 例 2 His logic is too loose to make much sense. 他的推理太不严密，没什么道理。 翻译 马自由自在地在田野里。 The horse is loose in the field. 知识拓展 at a loose end 无所事事；无事可做 break loose from

11、摆脱，挣脱 have (got) a loose tongue 说话没遮拦 on the loose 在逃；不受约束 即学即练 单句语法填空 Im at a bit of a loose end this afternoon.Do you fancy a game of tennis? Be careful what you tell Samshes got a very loose tongue，you know. There are ten prisoners on the loose. 知识要点5 urgent adj.紧急的；急迫的；急切的 (教材 P51) If the victim

12、 is suffering from second or third- degree burns，there is an urgent need to take him/her to the hospital at once. 如果受害者属于二度或三度烧伤，就需要立即送他/她去医院。 例 1 Can you come to the phoneit sounds urgent. 你能来接个电话吗听起来挺紧急的。 例 2 Dont forget that one，its rather urgent. 别把那事忘了，情况相当紧急。 翻译 现在她需要紧急治疗。 She needs urgent tre

13、atment now. 知识拓展 (1)an urgent problem 急迫的问题 be urgent for sb. to do sth. 急切地催促某人做某事 It is most urgent that. 很紧急 (2)urgently adv. 紧急地，急迫地 即学即练 单句语法填空 “Do you see it？” he demanded urgently(urgent) It is most urgent that the patient should get to hospital. She was urgent for the doctor to come(come) 知识

14、要点6 ease vt.减轻；缓解 vi.& vt.使容易；使顺利 n容易；舒适； 自在 (教材 P51) Putting butter or oil on burns helps because it may reduce swelling and ease discomfort. 在烧伤的地方涂上黄油或油会有帮助，因为它可以减少肿胀和缓解不适。 例 1 A smile is a sign that you are happy，which helps put people at ease. 微笑表示你感到高兴，它能使人感到自在。 例 2 My parents are retired and

15、now live a life of ease. 我的父母都退休了，现在过着安逸舒适的生活。 翻译 医生给了他一些止痛药来减轻他的痛苦。 The doctor gave him some painkillers to ease the pain. 知识拓展 (1)take ones ease 使某人放松一下 at ease 舒适；快活；自由自在 put sb. at ease 使某人感到轻松自在； 使某人安心 feel/look at ease 感到/看上去心情放松 with ease 容易地；毫不费劲地 (2)ease sb. of sth. 减轻某人的(痛苦、负担等) 即学即练 单句语法填

16、空/完成句子 He handed her a cup of coffee to put her at ease. I dont feel at ease in the strange place. 在这个陌生的地方，我觉得很不自在。 This medicine will ease you of your pain 这种药会缓解你的痛苦。 Now he can set his mind at ease because he has passed the examination with ease 现在他可以放心了，因为他已经轻松地通过了考试。 Sentence Patterns 重点句式1 as

17、 引导非限制性定语从句 (教材 P50) As you can imagine，getting burnt can lead to very serious injuries. 正如你想象的那样，烧伤会导致非常严重的伤害。 句式分析：句中 As you can imagine 是关系代词 as 引导的非限制性定语从 句，as 指代整个主句的内容，作 imagine 的宾语。 例 1 As you can imagine，running out of memory is a bad thing. 正如您可以想象的，内存耗尽是一件很糟糕的事情。 例 2 As you know，if you do

18、the same thing over and over again，you begin to do it automatically.正如你所知道的，如果你反复做同一件事，你就会不自觉地 做它。 翻译 众所周知，中国是世界上人口最多的国家。 As is known to all，China is a country with the largest population in the world. 知识拓展 (1)as 引导非限制性定语从句时，指代整个主句的内容，置于主句的前、中、 后均可，意为“正如”。 (2)as 在非限制性定语从句中作主语时，通常可用 it 作形式主语，后接 that

19、引导的主语从句或用 what 引导的主语从句来转换。 (3)引导限制性定语从句。这时，其先行词的前面通常有 such，the same 修 饰，构成 the same.as，such.as 结构。 即学即练 单句语法填空/一句多译 This man，as you know，is good for nothing. He borrowed the same book as the one I am reading. Einstein，as is well known，is a famous scientist.It is well known that Einstein is a famous

20、scientist.What is well known is that Einstein is a famous scientist. 众所周知，爱因斯坦是位著名的科学家。 重点句式2 if.省略句结构 (教材 P51) Remove any clothes using scissors if necessary，unless you see the fabric sticking to the burnt skin. 如果有必要的话，用剪刀剪掉衣服，除非你看到布料粘在烧焦的皮肤上。 句式分析：句中 if necessary 为 if it is necessary 的省略结构。 例 1 I

21、f necessary the patient can then visit his doctor for further advice. 如有必要，病人可以上门咨询自己的医生以得到更多的建议。 例 2 The article could be spun out to 6，000 words if necessary. 如果需要的话，这篇文章可以加长到六千字。 翻译 如果需要，打个电话给我。 If necessary，give me a ring. 知识拓展 if possible 如果可能的话 if so 假如这样的话 if not 假如不是这样的话；不然的话；否则 if ever 即使有

22、即学即练 完成句子 I might see you tomorrow.If not，then itll be Saturday. 我可能明天去看你。如果不是明天，那就是周六。 If possible，I wish to go there next summer. 如果可能，我希望明年夏天去那里。 They think she may try to phone.If so，someone must stay here. 他们认为她可能来电话。要是这样的话，就得有人守在这儿。 He seldom，if ever，goes to the movies by himself. 他不会，即使有也很少，单

23、独去看电影的。 1It also helps control your body temperature，prevents your body from losing too much water， warns you when things are too hot or cold， and gives you your sense of touch. 分析 句中 and 连接表示顺承关系的四个并列谓语， 其中 when things are too hot or cold 为 when 引导的时间状语从句。 译文 它还有助于控制体温，防止身体失去太多的水分，当东西太热或太 冷时，给你警告，并

24、使你有触觉。 2Applying oil to the injured areas is a bad idea，as it will keep the heat in the wounds and may cause infection. 分析 句中 Applying oil to the injured areas 为动名词短语作主语，谓语为第 三人称单数，as 引导的是一个原因状语从句。 译文 在烧伤的地方涂油是不明智的，因为它会使里面的热散不出去，并 可能导致感染。 教材 高考 1.Your skin acts as a barrier against disease，toxins，an

25、d the suns rays. (2019 全国卷)While the suns rays can age and harm our skin，they also give us beneficial Vitamin D. 2.If the victim is suffering from second or third- degree burns，there is an urgent need to take him/her to the hospital at once. (2019 天津卷)By signaling the urgent need for taking preventi

26、ve action. 3.What first- aid techniques do you know of？ (2019 天津卷)I dont have to write down what happened or what technique the author was using when he or she wrote this. 4.If burns are on the face，make sure the victim can still breathe. (2019 北京卷)Taking advantage of the new technologies，scammers c

27、an aim at victims precisely. .单句语法填空 1How do the two techniques(technique) compare in terms of application? 2Red Cross officials said they urgently(urgent) needed bread and water. 3The murderer escaped from prison last year and is still on the loose. 4 Rescue workers are digging through the rubble i

28、n search of other victims(victim) 5And they are still rising by about 5 millimetres (millimetre) a year. 6Her hair started falling out as a result of radiation (radiate) treatment. 7 The evidence suggests that our sense of touch is programmed to diminish with age. 8The eye is one of the most delicat

29、e organs (organ) of the body. 9It will be sunny this afternoon.If so，we will go swimming. 10As we all know，England is an island among the Atlantic Ocean. .短语填空 sense of touch；have a technique for；at a loose end；an urgent problem；if necessary 1I could come earlier tomorrow，if necessary 2Adolescents a

30、re most likely to get into trouble when theyre at a loose end 3He has a technique for improving the speed of the train. 4A pianist or a violinist must have a delicate sense of touch 5How to improve the students Chinese writing abilities remains an urgent problem to solve for the inland minority nati

31、onal middle schools. .课文语法填空 The skin is an essential part of your body，1.which acts as a barrier against disease，toxins，and the suns rays.Its getting burned can lead 2.to very serious injuries.Giving first aid is the first and most important step in the 3.treatment (treat) of burns.Burns can 4.be c

32、aused (cause) by a variety of things like hot liquids，acids，or other chemicals.They are divided into three types，depending on 5.the depth of skin damage.First- degree burns affect only the top few 6.millimetres (millimeter) of skin.Second- degree burns go below the top layer of the skin.Third- degre

33、e burns affect every layer of the skin，and sometimes the tissue under it.If you get 7.burnt (burn)， first place burns under cool running water.Then dry the burnt area 8.gently (gent) with a clean cloth.Remove any clothes 9.using (use) scissors if necessary.Cover the burnt area with a loose clean cloth.If the victim is suffering from second or third- degree burns，there is an urgent need 10.to take (take) him/her to the hospital at once.