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1、Unit 4 第三课时 Learning about Language.单项填空1Excuse me, what time is it now?Sorry, my watch_. It_at the shop.Aisnt working; is being repairedBdoesnt work; is being repairedCisnt working; is repairedDdoesnt work; is repaired答案：B考查时态和语态。手表坏了说的是手表目前的状况，用一般现在时表示主语的性质；根据第一句中的now可知，问的是此刻的情形，故手表正在店里修，用现在进行时，故选
2、B。2Are they about to have dinner?Yes, it_in the dining room.Ais being served Bis servedCis serving Dserves答案：A由语境可知餐厅此刻正在供应早餐，即早餐正在被供应，所以应用现在进行时的被动语态。3Cant you see your problem_？ Have some patience, please.Ais being discussed Bwas being discussedCis discussed Dhas been discussed答案：A根据have some patie
3、nce可知问题没有讨论完，且根据语境，动作是目前正在进行的，故用现在进行时的被动语态。4You cant use the machine today because some parts_this week.Aare replaced Bare being replacedChave replaced Dare replacing答案：B题意：你今天不能使用这台机器，因为本周一些零件正在被置换。parts与replace之间的被动关系是本周这一阶段正在进行的动作。5Why have you come to work on foot today?Well, my bike_and I hate
4、taking a crowded bus.Ahas been repaired Bis repairingCwill be repaired Dis being repaired答案：Dis being repaired说明自行车正在被修，所以今天步行上班。故选D。6Would you please give him this message the moment he_？Aarrives BarrivedCwill arrive Dis being arrived答案：Athe moment he arrives用一般现在时表示将来，意为“他一到达就”。arrive为不及物动词，没有被动语态
5、。故选A。7My sister wants to work in a tall building which_still_.Ais; to be built Bis; buildingCis; being built Dhas been; built答案：C根据still可知大楼正在建设中，故用现在进行时的被动语态。8Do you know what Lily is doing?She_in the office.Amay be interviewedBcan be interviewedCcan being interviewedDmay be being interviewed答案：D根据
6、问句可知动作正在进行，她现在正在被采访，故选D。9It is said that pandas_in our country year after year.Aare being disappeared Bare disappearingCwill be disappeared Dwill disappear答案：Bdisappear是不及物动词，不能用在被动结构中，根据year after year可知是目前存在的状况，故选B。10By the way, have you moved into the new house?Not yet. The walls_.Awere painted B
7、are being paintedCare painted Dare painting答案：B题意：顺便问一下，你搬到新房子里去了吗？还没有。(新房的)墙正在被粉刷。由语境可知应用现在进行时的被动语态。.把下列句子改成被动语态1The government is making great efforts to improve the living conditions of the people._2The nurses are taking good care of the old._3People are hunting too many animals these years in so
8、me places._4The teacher is correcting the papers in her office._5Our headmaster is preparing a speech now._答案：1Great efforts are being made to improve the living conditions of the people.2The old are being taken good care of by the nurses.3Too many animals are being hunted by people in some places.4
9、The papers are being corrected by the teacher in her office.5A speech is being prepared by our headmaster now.短文填空用方框内所给单词或短语的适当形式填空。threatenwildlifeaccording toreservehuntextinctionspeciesendangerdie outprotect Some endangered species face a serious threat of_1_. They need human_2_in order not to_3
10、_. The Californian condor is_4_because only about 150 birds of this_5_still exist, most of them in captivity. In 1987_6_biologists caught the last remaining wild Californian condors. Since then, more than 100 Californian condors have been born and raised by human beings_7_their living habits. Scient
11、ists have released some of these birds into the_8_in California and Arizona.Vulnerable species, also known as_9_species, are plentiful in some zones, but they face serious dangers, which are caused by changes in the environment or by_10_， fishing or trapping.答案：1.extinction2.protection3.die out4.end
12、angered5species6.wildlife7.according to8.reserves9threatened10.hunting.完形填空阅读下面短文，理解大意，从题中所给的A、B、C、D四个选项中选出一个最佳答案。The lovely panda is recognized over the world as a symbol of Chinas natural heritage. The panda is also one of the worlds most_1_species. Fewer than 1,600_2_in the world today._3_the gov
13、ernment is trying hard to protect them, pandas are_4_hunted for their fur，_5_is worth $100,000. China is_6_losing forever_7_of its rich wildlife heritage during the 21st century.If you visit the_8_animal markets and_9_medicine shops in southern China, you will see one reason_10_so many species of wildlife are endangered. Diners in Guangzhou_11_to enjoy eating animals_12_foxes and dogs. Only 5,000 to 7,000 tigers remain in the wild but the demand for tigers has_13_so much. The_14_for bear paws for medicine threatens too_15_species of Asian bears within just a few more years.The C
