高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists教案

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新人教版（2019）英语选修性必修二Unit 1 Science and scientists Period 2 Build up your vocabulary教学设计 课题 Period 2 Build up your vocabulary单元Unit 1 学科English年级Grade 2教材分析This is the second period of this unit. The emphasis of this period will be placed on the important words, expressions and sentence patterns in the reading text. In order to make students understand these points, teacher can first get students to study the usages themselves and try to make a summary according to the examples, and then try to put them into use to improve the ability to use them in a real situation. At last under the guidance of the teacher,students can make use of what they have learned as much as possible to express themselves. By doing so, students can grasp these important language points well.教学目标与核心素养Knowledge objectives:  Learn some prefixes or suffixes and enable the Ss to master the usage of the key words and expressions in this unit.Skill objectives:       Enable the Ss to use the sentence patterns flexibly.Emotional objectives: The students can refine the greatness of achievement and will be better at writing and speaking.  重点frustrated;infect;contradictory;initialsubscribe to; suspect of; link to; draw a conclusion ;make senseSb. Be to blame for sth.难点How to train the Ss to apply some structures correctly by doing the relevant exercises. 教学过程教学环节教师活动学生活动设计意图导入新课Step1 leading –in      Use ppt to show a long word and guide them like this:Look at the following word and guess what is the meaning of it.2. Point out the word formation and give the related prefixes and suffixes . Give a complex word and ask students to guess the meaning of it and observe the formation.   To check whether students to find out the prefixes or suffixes and guide students to the study of word formation.复习词汇衔接新课Dealing with PPT 4-10  Look at the following words and find out their regulation.-form-: reform;preform,inform;uniform;transformprefix  前缀:re-=again;pre-=completely;in-=into;uni-=single;trans-=changed2.Give the Chinese meaning of the underlined words.1.Studies have shown that when exercise is performed in groups,it's not only great for improving physical health but for psychological health.                                                                                                                                                          2.School reform efforts during the 19th century have reduced the amount of time adolescents spend with younger children.3. Since then,the society has moved onward,never looking back ,as the car transformed America from a farm-based society into an industrial power.                                                                                                                                         4.As in so many offices that you see,the walls and furniture are a uniform gray.   答案：进行；改革；改变；同一的3.-view-：review;preview;interview;interviewer;intervieweeprefix  前缀:re-=again;pre-=completely;inter-=between; from one to anothersuffix 后缀 :-er= the originator of an action-ee =the recipient of the action4.Fill in the blanks with the words related to“view”.1. The manager had been          the previous year on his way home.                                                                                                                                       2.We've          a woman for the job already,but she wasn't very well qualified.  3.Journalists will be invited to        the exhibition tomorrow before it's open to the public. 4. The           gets to see more of the candidate by asking some predesigned questions.                                                                                                                                       5.The          can get a chance to show his confidence,working ability and educational background.  答案：reviewing; interviewed; preview; interviewer;interviewee    1.Ask students to have a brainstorm first,then write down the each word . And next, learn each prefix’s meaning.  Practise the related words and answer the Questions individually. 讲授新课Learn about word formation and Deal with PPT 11-141.Use ppt to show some other prefixes or suffixes : prefixesdis-不，否定，相反micro-极小的，微小的mis-错误的，坏的；不；相反un-不；表示相反的动作multi-多于一的；多的Suffixes-ory不，否定，相反-ion极小的，微小的-ial 与......有关的，有......特性的-ology 表示学科,学问-al ......的动作，......的过程-or......的物，用于做......的物-ist......专业人员，......专家；......主义者2.Find the words from the previous pages with the following prefixes or suffixes. Then add two words for each prefix or suffix.Prefix            suffixre-  retell recycle       -ory theory contradictorydis- disappoint dislike       -ion  action inventionmicro- microsoft microphone -ial beneficial  officialtrans- transform transport   -ology biology geologymis- misunderstand misleading -al natural actualun- unlike unhappy       -or actor  inventormulti- multiple multinational -ist biologist scientistLearn some important words and phrases anddealing with PPT 15-233. Make phrases by combining the words in the left box with those on the right.Then complete the sentences using these phrases.subscribe suspect blame  link  to,of,for    1. Many scientists ____________________the view that it is human activity that has caused global warming.subscribe  :to pay money, usually once a year, to have copies of a newspaper or magazine sent to you     【记忆】sub 下 + scrib 写 + e → 在单子下面写上名字 → 订阅；认购2.He was to____________ the accident because he drove on the wrong side of the road.  blame  :to think or say that sb./sth. is responsible for sth. bad 【常见搭配】：[be to blame]   炎热的天气是缺水的原因之一。The hot weather      partly                          for the water shortage.3 The man ____________________being behind the robbery was seen crossing the street.suspect  :v. to think that something is probably true, especially something bad 怀疑           to think that something is not honest or true 不信任        n. someone who is thought to be guilty of a crime 犯罪嫌疑人【例句】
I suspected that there was something wrong with the engine.我怀疑发动机出了什么故障。I began to suspect his motives in inviting me.我开始怀疑他邀请我的动机。Two suspects were arrested today in connection with the robbery.有两名与劫案有关的嫌疑人今天被逮捕。【常用搭配】[suspect sb. of  sth.]He was suspected of treason.他有叛国嫌疑。4.Since heart disease is often________________ our lifestyle choices, we need to make healthy living an important part of our lives.link :  v. make a logical or causal connection; connect, fasten, or put together two or more pieces连接；联合，结合                n. the means of connection between things linked in series联系，关系答案：subscribe to；blame for； suspected of ；linked to 4.Replace the underlined parts with suitable words from the box.raw; a household name ;substantial; statistics;  handle 1. It is not unusual for an athlete to be well known while he is active, and quickly forgotten when his athletic career is over.2. I'm sure she'll deal with the changes very well because she's very adaptable.3. He was ready to serve dinner to his friends when he realized that he had forgotten to turn on the oven and the meat was not cooked yet.4. He used his great influence to change the thinking of the scientific community on this issue.5. Scientists have collected more data than expected to prove the theory.答案：a household name ;handle;raw;substantial;statistics5. Read this passage about medical science. Complete it using the words below.infection multiple decrease  severe       transform  proof blame  substantial  British scientists believe they may have found a way to fight the common cold. It blocks a key protein in the body cells that is to _________ for the spread of cold-causing virus. Targeting he host rather than __________was a bit non-traditional but made sense because it was tricky to target the virus. Cold-causing virus are not only of __________kinds, they also __________ rapidly, meaning they can quickly develop resistance to medicine. Researchers are working on making a form of medicine that can be taken directly into one’s lungs, to____________ the chance of side effects. Though these scientists have made ____________________ advances in their research, further______________ is needed to make sure such drugs are not so______________ that they harm the body. 答案：blame,infection,multiple,transform ,decrease,substantial,proof,severe Let students use what they have learned above to guess the word formation.Students can do it individually or in groups.While doing the exercises, students can play a game to see who can or which group can give as many correct words or answers as possible.                                                                                                            Have a thorough understanding of the meaning and usage of words and be able to give correct answers.                                                To check the ability of guessing words’ meaning To train students’ team spirits.Collaborative inquiry learning                      Use vocabulary, master vocabulary and expand vocabulary usage.            Use the text materials to guide the students to try the relevant questions of the college entrance examination, and make efforts in daily life to gradually cultivate their pragmatic ability.       课堂练习 Words extension1. frustrate v.挫败;阻挠;adj.挫败的;沮丧的frustration n.懊丧;令人懊丧的事物 with frustration恼火地2. infect v.使感染;使传染infection n.感染;传染severe inflections严重的感染3 contradictory adj.相矛盾的;对立的contradict v.相矛盾contradictory statements相互矛盾的陈述4. initial adj.开始的,最初的initially adv.开始地,最初initial reaction最初的反应Phrases extension1.多亏 thanks to2.最终once and for all3同意,订阅 subscribe to4.最重要的是 above all5.爆发break out6.主观;负责 in charge of7得出结论 draw a conclusion8.总之in general9.结果是 as a result10.死于 die from11.弄清;查明 find out12.处理 deal with13.执行carry out14.有意义make senseFill in the blanks with proper form of the phrases.1. We ______ that the disaster was to end.2. It was all a great success—        a lot of hard work. 3. On the face of it that seems to     . But the figures don't add up. 4.       , a plain carpet makes a room look bigger.5. He has some unfinished business to         . 6. Send it to whoever is         sales.7. ________, we consider him as all-around student at the end of the semester.8. More than half of all smokers ___ a tobacco-related disease.9. They interviewed the victim to _____ the truth.10.Every morning I would        in a sweat.答案：drew a conclusion;thanks to;make sense;In general;deal with;in charge of,As a result;dies from;find out;break out    课堂活动Activity1 Write down the word that matches each definition.           adj. two statements, beliefs etc that are contradictory are different and therefore cannot both be true or correct 【语法填空】Though her version          her daughter's, she believed that freedom and discipline are not            each other.             n. the act of becoming involved in an argument, fight, or other difficult situation in order to change what happens【语法填空】The situation calmed down when police       .That is,the two men would have continued fighting but for the         of a policeman.          n. all the people who live together in one house ;adj. relating to looking after a house and the people in it 【语法填空】A growing number of       offer at least one computer to the renters.If a           is interested, you'll get an interview, probably by phone.        v. to throw sb./sth. somewhere, especially using force 【语法填空】用cast的词组填空She cast her thoughts     to the voyage on the sea, when the ship was cast      during the storm.The priceless treasures had been cast into the Nile.             vi. & vt. to do something in order to protect someone or something from being attacked【语法填空】His courage in      his homeland inspired many residents，and we would not abandon our         of the city.           n. a person who helps or supports sb, usually in their job【语法填空】Ms. Li is a good __________，whose ____________ benefits us a lot，and she is ___________ us in making chemical experiments in the lab now. Activity 2 Group work: Use the words in Activity 1 to translate the following passage.新冠肺炎已经成了一个人尽皆知的名字。它给我们的生活投射了很大的阴影。但是，新的疾病出现与社会发展并不是矛盾的。在科学家和医生研制一些新药对其干预的情况下，我们一定要加强对它的防御。无论如何，专家和医生的指导帮助我们勇敢面对它。Answers:Covid-19 has become a household name. It casts a big shadow over our lives. However，the emergence of new diseases is not contradictory to social development. While scientists and doctors develop some new drugs to intervene,we must strengthen our defenses against it . Above all,guidance from experts and doctors assists us face it bravely.    Individual vocabulary practice ,combined with group work.Using word formation, adding prefixes or suffixes on the basis of word roots, in the context, to encourage students to master vocabulary and application.课堂小结Summary:Word formationCore VocabularyWords extensionPhrases extensionHomework:  Recite the words and phrases.2.Do the exercises 1,2 and 3 on page 61 of the workbook.         Brain stormIndividual workGroup workWritten work       To test students’ ability to analyse language point. 板书prefixesdis-micro-mis-un-multi-Suffixes-ory-ion-ial -ology -al -or.-istfrustratedinfectcontradictoryinitialsubscribe tosuspect of link todraw a conclusion make senseSb. Be to blame for sth.