人教版新课标选修7第四单元精讲讲义(附练习答案)

1、选修7第4单元. 要点导读1. sometimes i wonder how relevant chemistry is to the kids, most of whom will be going back to their villages after year 8. (p29) relevant adj.“紧密相关的” eg: do you have any relevant experience? 与to连用，意为“和有关” eg: the film was relevant to what was being discussed in class. 反义词为irrelevant，意

2、为“(与某事物)不相关的；不切题的”eg: what you said is irrelevant to the subject. relevance n.“相关；切题” eg: what you wrote has no relevance to the topic.2. the hut was dark inside so it took time for our eyes to adjust. (p30) adjust vi.“适应”，常和to连用 eg: astronauts in flight must adjust to weightlessness. vt.“调整；使适应” eg

3、: you cant see through a telescope unless it is adjusted correctly to your sight.3. it was such a privilege to have spent a day with tombes family. (p30) privilege (1) n.“特别优待；优惠待遇”，通常用作单数；此外，还有“特权”的意思。 eg: its a privilege for the old to take the city buses for free. in some countries school educati

4、on is still a privilege for the children from rich families. (2) v.“给予特权；特别优待” eg: these are policies that privilege the club members. privileged adj.“有特权的；荣幸的” eg: the right to vote still belongs to the privileged people in that country.4. sleeping arrangements (p31) arrangement n.c“安排；筹备”；make arr

5、angements for“为做好准备” eg: they are busy making arrangements for the party. come to an arrangement“达成一致” arrange v.“安排；筹备；整理”，它后面既可跟名词、代词、动词不定式或从句，也可和for搭配，构成短语arrange for sth“安排某物” eg: our manager has arranged for a car to meet the clients. they were too busy to arrange their own wedding ceremony. th

6、e police are arranging how to make the president get to the airport safely.5. when you purchase an item, we will send you an attractive card for you to send to your special person. (p33) purchase (1) vt.“购买” eg: the books can be purchased from the local bookstore. (2) n.“购买” u指“购买”这个动作时 eg: i hope y

7、ou will be satisfied with your purchase here. c“买某样东西”eg: mother made several purchases in that shop.6. adults develop the confidence to participate in the social, economic and political lives of their communities. (p34) participate vi.“参与；参加”，常跟in连用 eg: i didnt want to participate in the boring dis

8、cussion. 辨析：participate, join与take part in的区别： participate指在感情、观念或行为方面与他人共同参加某一活动。 join既可指参加一群人的活动，也可指加入某个组织，成为其中的一员，常见的搭配为：join the army / club / party，表示参加某一活动时常用join in sth。 take part in指参加某一活动并发挥作用。7. imagine you and your classmates want to donate some of your pocket money to help those in need

9、in another country. (p34) donate v.“捐赠；捐献”；donate sth to “向捐献某物” eg: the passers-by were asked to donate some money to the people in the flooded area. donation n.“捐赠；捐赠品” eg: she made a donation of 10,000 dollars to charity.8. the boy had never come across anything like this and started jumping out

10、of the windows. (p29) come across“碰见；遇见” eg: i came across him in the street. i came across a child sleeping under the bridge. come around / round“前来；苏醒过来” eg: luckily, the boy cane around quickly after the accident. come between“在中间来；干预(某两人之间的事)” eg: it is often dangerous and never wise to come bet

11、ween a man and his wife. come out“开花；出版” eg: when is her new novel coming out? come about“发生；(风等)改变方向”；come after“追赶；追随”；come at“袭击；达到”9. , a low bamboo hut with grass sticking out of the roof this shows its a mans house. (p29) stick out“伸出” eg: the beggar stuck out his hand toward us. “醒目；显眼；引人注目”e

12、g: she has red hair that always sticks out in a crowd. stick out of“从伸出” eg: the paper was sticking out of his pocket. stick sth out“坚持到底；忍受下去” eg: she didnt like the course but she stuck it out to get the certificate.10. i know youre dying to hear about my life here. (p29) be dying to“极想” eg: all o

13、f them are dying to see the movie this evening. be anxious to“渴望；非常希望” eg: she was anxious to get a job after graduation. be eager to“渴望；渴求” eg: everyone in the class was eager to learn.11. it was wonderful to hear from you. (p29) hear from“收到某人的来信(电话等)”，后面接表示人的名词或代词。 eg: the mother is worried becau

14、se she hasnt heard from her daughter for a long time. hear of / about“听说” eg: i have heard of the famous film star but never met her before. hear sb out“听某人把话说完” eg: please hear me out before you do anything.12. choose from this catalogue a really useful gift for some of the worlds poorest and bring

15、 hope for a better future to a community in need. (p33) in need“在困难 / 危急中” eg: you should give your help to someone in need. in need of“需要”，作表语 eg: according to the survey, that area is in great need of volunteers.there is no need for sb to do sth“对某人来说没必要做某事” eg: there is no need for you to earn so

16、 much money. 热点语法：限制性定语从句一、关联词的基本用法1、who / that指人，在定语从句中作主语或宾语，作宾语时可省略。 eg: mr. blacksmith who / that comes from the usa teaches us english.2、whom指人，在定语从句中作宾语，可省略。 eg: the boy (whom) he spoke of in his talk was tom.3、which / that指物，在定语从句中作主语或宾语，作宾语时可省略。 eg: football is a game which / that is always

17、popular with boys. the pen (that / which) i bought yesterday was lost.4、whose可指人或物，在定语从句中作定语。 eg: i live in the room whose windows face south. 注意：“whose + 名词”可以转换成“the + 名词 + of which (指物) / whom (指人)”的结构。 eg: the girl whose hair is red is mary. = the girl, the hair of whom is red, is mary.5、when指时间

18、，where指地点，why指原因，三者都在定语从句中作状语，可以转化为“介词 + which”的形式，但是why只能转化为“for which”的形式。 eg: i paid a visit to the factory where / in which i worked ten years ago.二、限制性定语从句中只用that的情况1、当先行词是everything，nothing，something，all，none，few，little，some，any等词时，或先行词被every，little，a little，few，much，any，all等词修饰时。 eg: there se

19、ems to be nothing that is impossible to him in the world.2、当先行词被序数词、形容词最高级或the very，the only等词修饰时。 eg: the first place that i visited in beijing was the forbidden city.3、当先行词既有人又有物时。 eg: they are talking about the things and the persons that they met yesterday.4、当主句是以who，which开头的特殊疑问句或先行词是who时。 eg:

20、who is the man that is lying under the tree?三、what与that的选择what相当于the thing / place that / which，the person who等，而that只用来指代先行词，只在定语从句中充当一个成分，所以，如果所填或所选择的词需要作两个成分，一般选择what。eg: they reached what the local people called the golden gate. (what = the place that)he is no longer what he used to be ten years

21、 ago. (what = the person who)四、定语从句中的主谓一致 当关系代词在从句中作主语时，从句谓语动词的数原则上要与先行词保持一致，但是要注意以下几点：1、one of + 复数名词 + 关系代词 + 复数动词。 eg: he is one of the students who have got great success in physics.2、the / the only one of + 复数名词 + 关系代词 + 动词第三人称单数形式。 eg: he is the only one of the students who has got great succe

22、ss in physics.3、as / which引导非限制性定语，代表整个主句时，从句谓语用动词第三人称单数形式。 eg: he decides to get married, which makes his parents very happy.语法聚焦1. we will be shown around the city: schools, museums, and some other places, other visitors seldom go. a. what b. which c. where d. when2. alec asked the policeman he wo

23、rked to contact him whenever there was an accident. a. with him b. who c. with whom d. whom3. do you still remember the chicken farm we visited three years ago? a. where b. when c. that d. what4. there were dirty marks on her trousers she had wiped her hands. a. where b. which c. when d. that5. amer

24、ican women usually identify their best friend as someone they can talk frequently. a. who b. as c. about whom d. with whom6. there was time i hated to go school. a. a; that b. a; when c. the; that d. the; when7. what surprised me was not what he said but he said it. a. the way b. in the way that c.

25、in the way d. the way which8. hes got himself into a dangerous situation he is likely to control over the plane. a. where b. which c. this d. who9. i work in a business almost everyone is waiting for a great chance. a. how b. which c. where d. that10. -is that the small town you often refer to? -rig

26、ht, just the one you know i used to work for years. a. that b. which c. where d. what. 综合训练一、单项选择1. there are few occasions members are uncertain about their roles. a. when b. whose c. why d. which2. he is rich, but an unhappy man. a. or b. otherwise c. however d. then3. many rivers in this area hav

27、e dried recently. a. up b. out c. off d. at4. i havent heard peter since we left school, though i have written many letters to him. a. of b. about c. / d. from5. he didnt know how to the new system. a. do b. make c. operate d. take6. many children quit school because their families are and cant affo

28、rd their schooling. a. in danger b. in need c. in despair d. in place7. the little girl made some in the supermarket with the money she had saved. a. bills b. sales c. purchases d. discounts8. make sure that everything you write is to the questions you have been asked. a. concerned b. dependent c. c

29、onnecting d. relevant9. the woman was to hear the news of her lost child and she almost went mad. a. cautious b. annoyed c. scared d. dying10. my new camera can be to take pictures in both cloudy and sunny conditions. a. adapted b. adjusted c. adopted d. remedied11. athletes from all over the world

30、the beijing 2008 olympic games. a. join b. participate in c. participate d. attend12. if most bread-winners a days pay to the hope project, then many dropouts can return to school. a. bring b. take c. donate d. have13. doctors are concerned that the children too much time in front of the tv dont get

31、 enough exercise. a. those spend b. who spend c. to spend d. spend14. there are many things in different areas we can do. a. where b. there c. what d. that15.15. lets just read the sentence youve made a mistake. a. that b. which c. when d. where二、完形填空each of us fails from time to time. if we are wis

32、e, we accept these failures as a 16 part of the learning process. but all too often as parents and teachers we 17 the same right to our children.when i see a child 18 from this kind of pressure, i think of donnie. donnie was my youngest third-grader. his 19 of failure kept him from classroom games t

33、hat other children enjoyed. he 20 answered questions he was afraid he might be wrong.i tried my best to build his 21 . but nothing changed until midterm, when mary anne, a student teacher, was assigned to our classroom. she was young and pretty, and she loved children. my pupils, donnie included, al

34、l 22 her very much.one morning, we were working on math problems at the blackboard. donnie had 23 the problems with pains-taking tidiness. pleased with his progress, i 24 the children with mary anne and went for art materials. when i returned, donnie was in 25 . hed missed the third problem.my stude

35、nt teacher looked at me in despair. suddenly her face 26 . from the desk we shared, she got a container filled with pencils.“look, donnie,” she said, kneeling beside him and gently 27 the tear-stained (弄脏的) face from his arms. “ive got something to 28 you.” she removed the pencils, one at a time, an

36、d placed them on his desk.“see these 29 , donnie,” she continued. “they belong to mrs lindstrom and me. see how the erasers are 30 . thats because we make mistakes too. but we erase the mistakes and try again. thats what you 31 learn to do, to.”she kissed him and stood up. “here,” she said. “ill lea

37、ve one of these pencils on 32 desk so youll remember that everybody makes mistakes, 33 teachers.” donnie looked up with love in his eyes.the 34 became donnies prized possession. that, together with mary annes frequent encouragement, gradually 35 him that its all right to make mistakes as long as you

38、 erase them and try again.16. a. smallb. basicc. necessaryd. important17. a. giveb. disallowc. offerd. permit18. a. comeb. takec. falld. suffer19. a. fearb. lessonc. chanced. sense20. a. alwaysb. oftenc. neverd. seldom21. a. self-protectionb. self-improvementc. self-confidenced. self-learning22. a.

39、respectedb. dislikedc. avoidedd. minded23. a. worked outb. written downc. gone overd. learned24. a. leftb. offeredc. missedd. parted25. a. surpriseb. astonishmentc. angerd. tears26. a. darkenedb. brightenedc. pulledd. loosened27. a. liftingb. pickingc. holdingd. pushing28. a. helpb. showc. rewardd.

40、promise29. a. pencilsb. mistakesc. marksd. containers30. a. usedb. builtc. wornd. damaged31. a. mayb. mustc. ought tod. can32. a. myb. someonesc. the teachersd. your33. a. stillb. alsoc. evend. not34. a. pencilb. wordsc. mistaked. desk35. a. warnedb. informedc. persuadedd. reminded三、阅读理解because of a

41、 serious car accident that tore my upper lip when i was three and a half i had a scar (伤疤) below my nose. some insensitive children called me chief running nose and scarface, and my confidence and self-esteem (自尊心) suffered. although my parents and relatives said i was pretty, i didnt see myself tha

42、t way. i could think of nothing but my scar, and take pleasure in nothing.one day, after school, i remained in my classroom, waiting for my mother. miss pratt was chatting at her desk with a fellow teacher.it was time for me get ready to leave. i put on my brown wool coat and hat. the teacher looked

43、 at my outfit and seemed to admire it. “who is she? she is really cute.” my teacher answered, “i agree. bernice is adorable.”adorable! the word grabbed me. a delicious warmth enveloped me, and a new awareness. teachers would not lie. so maybe it was true. i was pretty. what a surprise!at that moment

44、 i decided to be the first in my class to learn the assigned tables (乘法表). whatever it took, no matter how long, i would succeed. no one was going to stop me. this time i believed in myself.about a week later, miss pratt announced to the class that i was the first one to learn the tables, and said s

45、he was proud of me. she handed me a gold key to be confident. i thanked her enthusiastically. the class smiled and clapped. for the first time, i felt truly good about myself. i knew i had been encouraged by miss pratts remark. this might not have occurred if i had not overheard those kind words!36. why did bernice lack confidence at first? a. she had once suffered a serious car accident. b. she was made fun of for the scar on her face. c. her classmates referred to her as mentally disabled. d. her parents and relatives thought she was