1、4.2 课时作业.用所给动词(短语)的适当形式填空1We decided _ (talk)to some students about why they go there.答案：to talk2It made us very angry _ (hear) him talk like that.答案：to hear3They found it impossible _ (get) everything ready in time.答案：to get4Please remember _(turn off) the light when you leave.答案：to turn off5The bo
2、oks are not allowed _ (take out) of the room.答案：to be taken out6He is looking for a room _ (live in)答案：to live in7He bought a bicycle _ (go) to town more quickly.答案：to go8They thought it a pity _ (not invite) her.答案：not to have invited9Did you notice him _ (leave) the room？答案：leave10He cant help but
3、 _ (clean) the glass by himself.答案：clean11Its nonsmoking area，so we told the guests _ (not smoke) here.答案：not to smoke12The Arctic is considered _ (be) the northern part of the Atlantic.答案：to be13I would rather starve to death than _ (beg) for food.答案：beg14A group of young people got together _ (dis
4、cuss) this question.答案：to discuss15Why not _ (try go) there by boat for a change?答案：try going.单句改错1David threatened to have reported his neighbor to the police if the damages were not paid._答案：have reportedreport2I regret telling you that your application hasnt been successful._答案：tellingto tell3The
5、 purpose of new technologies is to make life easier, not making it more difficult._答案：makingto make4He couldnt go to England for further education. He regretted to miss such a good chance._答案：to missmissing5She was asked not make so much noise because her little brother was sleeping._答案：not后加to6Trav
6、eling can broaden our view and it can make us feeling relaxed after a long period of studying._答案：feelingfeel7At last，he found a house to leave his things._答案：things后加in8He is said to be studying in the United States for three years._答案：be studyinghave studied9After the meeting, we went to the super
7、market to do some shopping, only finding that it was being decorated._答案：findingto find10The work needs being completed by the end of the week._答案：being completedto be completed或completing11It is an honour of me to be chosen to give a speech on behalf of the whole class._答案：第一个offor12Teenagers shoul
8、d be allowed choosing their own clothes and hairstyle._答案：choosingto choose13We are invited to attend the party held in our club next Thursday._答案：held前加to be14To have completed the project in time, the staff were working at weekends._答案：have completedcomplete15Do let your mother know all the truth;
9、 she appears to be told everything._答案：be toldhave been told.完形填空For years scientists have been worried about the effects of air pollution on the earths natural conditions. Some believe the _1_ inside many houses may be more dangerous than the air outside. It may be one hundred times _2_.Indoor air
10、pollution can _3_ a person to feel tired, to suffer eyepain, headache and other _4_. Some pollutants can cause breathing disorders, diseases of blood and _5_ cancer. Most scientists agree that every modern house has some kind of _6_ pollution.People pay more _7_ to the problem now. It is that when b
11、uilders began making _8_ and offices they did not want to waste energy. To do this they built buildings that limited the flow of air between inside and outside. They also began _9_ manmade building materials. These _10_ are now known to let outharmful gases. _11_ the problem became more serious, sci
12、entists began searching for a _12_ to deal with it. They discovered a natural pollution control system _13_ buildinggreen plants. Scientists dont really know how _14_ control air pollution. They believe that a plants leaves absorb or _15_ the pollutants. In _16_ the plant lets out oxygen through its
13、 leaves and tiny organizations on its roots. Scientists _17_ that all buildings should have one large plant or several small plants inside for every nine square metres of space. _18_ of different plants show that each absorbs different chemicals. So the most effective way to _19_ the air is to use d
14、ifferent kinds of plants. Having green plants inside your house can make it a prettier and more _20_ place.1A. air B. light C. health D. atmosphere2A. lighter B. worse C. thicker D. heavier3A. permit B. desire C. cause D. persuade4A. pollution B. gases C. difficulties D. problems5A. at least B. hard
15、ly C. only D. even6A. actual B. loose C. indoor D. downtown7A. fear B. attention C. remark D. store8A. houses B. preparations C. furniture D. efforts9A. using B. resisting C. valuing D. judging10A. materials B. tables C. industries D. drinks11A. If B. Although C. As D. Unless12A. chance B. instructi
16、on C. scientist D. way13A. from B. for C. with D. like14A. water B. plants C. products D. measures15A. take in B. put off C. let out D. give out16A. time B. exchange C. order D. particular17A. suggest B. require C. beg D. order18A. Colors B. Studies C. Roots D. Containers19A. share B. reduce C. clea
17、n D. increase20A. boring B. advanced C. crowded D. healthy答案与解析：1A由下文的the air outside可知答案。2B上句说室内空气比室外空气差，本句说的是室内空气比室外空气差的倍数。3C句意：室内空气污染能使人感到疲惫、眼睛疼痛、头痛以及引起其他问题。4D疲劳、眼睛疼痛、头痛都是室内污染所带来的问题，所以本空选择problems。5D“导致癌症”与“导致呼吸紊乱、血液病”在程度上有递进的关系，故用even。6C第二段讲的是室内污染带来的一些问题，以及所导致的一些疾病，因此此处指多数科学家断言每一个现代居室都存在着室内污染。7B
18、本句话表示“现在人们更关注这个问题”。pay attention to“注意，重视”，固定搭配。8A由下一句“To do this they built buildings that limited the flow of air between inside and outside.”可知，所填词与建筑有关，所以选houses。9A上文提到，他们在建造房屋与办公室时不想浪费能源，所以此处指他们也开始使用人造建筑材料，所以填using。10A由上句的manmade building materials可知，这里表示这些“材料”释放有害气体。11C下半句scientists began sear
19、ching for a _12_ to deal with it是上半句的结果，上半句句意：因为这个问题越来越严重。12D解决污染问题，只能是寻找一种方法，故用way。13B句意：他们发现了一种适用于建筑的天然材料。for在此表示“适用于”。14B由下一句“They believe that a plants leaves absorb or _15_ the pollutants.”可知，此处选plants。15A由空前的or可知，该空应与absorb是同义词，故用take in。16B句意：在交换中，植物通过叶子或根的小组织来释放出氧气。所以应为exchange“交换”，“交换”指的是植物
20、吸收污染物，然后释放氧气。17A鉴于把植物放在房间里的好处，所以科学家们提出了一种“建议”。18Beach absorbs different chemicals是科学家得出的结论，所以被认为是“研究”得出的。19C绿色植物对控制室内污染有很好的作用，故推断此空填clean。clean the air意为“净化空气”。20D由于绿色植物能够净化室内空气，所以在房间里放置绿色植物能够使房子更漂亮并更有益健康。.语法填空When someone has deeply hurt you, it can be extremely difficult to let go of your anger. B
21、ut forgiveness is possibleand it can be surprisingly beneficial _1_ your physical and mental health. So far, research _2_ (show) that people who forgive report more energy, better appetite and better sleep patterns. “People who forgive show _3_ (little) anger and more hopefulness，” says Dr. Frederic
22、 Luskin, who wrote the book Forgive for Good. “So it can help reduce the tiredness out of the immune system and allow people to feel more energetic.”_4_ when someone has hurt you, calm yourself first. Take a couple of _5_ (breathe) and think of something _6_ gives you pleasure：a beautiful scene in n
23、ature, or someone you love. Dont wait for an apology. “Many times the person who hurt you may _7_ (ever) think of apologizing，” says Dr. Luskin. “They may have wanted to hurt you or they just dont see things _8_ same way. So if you wait for people to apologize, you could be waiting for a very long t
24、ime.”Keep in mind that forgiveness does not necessarily mean _9_ (accept) the action of the person who upset you. Instead, learn to look for the love, beauty and kindness around you. Finally, try to see things _10_ the other persons perspective (思维方式，看法). You may realize that he or she was acting ou
25、t of ignorance. To gain perspective, you may want to write a letter to yourself from that persons point of view.答案与解析：1to考查介词。句意：并且它(原谅别人)会出人意料地有益你的身心健康。“be beneficial to sb.”意为“对某人有益”。2has shown考查动词时态。句意：到目前为止，研究已经表明宽恕(别人)的人精力更旺盛、食欲更好、有更好的睡觉模式。so far一般与现在完成时连用，意为“到目前为止”。3less考查形容词的比较级。句意：宽恕(别人)的人更少
26、发怒而且更充满希望。并列连词and连接的两个并列成分的形式一定是一致的。下文用的是比较级，所以此处应填little的比较级less。4So考查并列连词。句意：所以，当有人伤害你的时候，你首先要使自己平静下来。并列连词so在文章中起一个承上启下的作用，意为“因此，所以”，其前后两个部分是因果关系。5breaths考查词性转换。句意：深吸几口气，然后去想某件带给你快乐的事情。根据空前的“a couple of”可知，此处填名词形式。需注意单复数。6that考查关系代词。句意：深吸几口气，然后去想那些带给你快乐的事情。当先行词是不定代词时，定语从句的关系代词用that。7never考查副词。句意：不要等着别人道歉。很多时候伤害你的那个人可能从来不会想着道歉。根据语境，此处填never。8the考查冠词。句意：他们可能已经伤害了你或者只是没有用同样的方式看待问题。same前用定冠词the修饰。9accepting考查动名词作宾语。句意：记住宽恕(别人)并非一定意味着接受那个烦扰了你的人的行为。动词mean作“意味着”讲时，后应用名词或动名词作宾语，不能用不定式。10from考查介词。句意：最后，尽量从对方的角度看事情。from ones perspective从某人的角度。