1、UNIT 5A delicate world1.appetite n.胃口胃口,食欲食欲教材原句Unfortunately,the cats subsequently developed an appetite for the birds,too.(P50)不幸的是,这些猫随后喜欢上了吃鸟。语境巧练单句语法填空(1)The long walk has given me good appetite.(2)The public has an insatiable appetite stories about the famous.小话题写作(3)玛丽不喜欢做艰苦的工作。Mary hard work
2、.afordoesnt have an appetite for考点必记have an appetite for sth喜欢/想做某事lose ones appetite没有食欲appetizer n.开胃品appetizing adj.促进食欲的,开胃的名师点津appetite的基本意思是“欲望”,指人或动物对食物等的欲望;用于比喻时,可指“斗志”等。appetite既可用作可数名词,也可用作不可数名词,有复数形式。2.multiply v.(使使)大大增加大大增加,(使使)倍增倍增教材原句Loose on the island,they did what rabbits do bestth
3、ey multiplied rapidly and began eating the native vegetation and digging holes,which caused soil erosion.(P50)在岛上无拘无束,它们开始做兔子最擅长的事情它们数量快速增加,开始吃当地的植物,并打洞,造成了土壤侵蚀。语境巧练单句语法填空(1)2(multiply)by 4 makes 8.(2)Cigarette smoking(multiply)the risk of cancer.(3)It is possible(multiply)these bacteria in the labo
4、ratory.完成句子(4)自去年以来,我们的问题成倍增加。since last year.multipliedmultipliesto multiplyOur problems have multiplied考点必记multiply A by B|multiply A and B(together)A乘以Bmultiplicity n.多种多样,多样性multiple adj.数量多的,多种多样的名师点津1.multiply的基本意思是“增加”,主要指通过自然繁殖而增加数量,也指同类事物在数量上无限制的重复增加。用于数学,可表示“相乘”。2.multiply既可用作及物动词,也可用作不及物动
5、词。3.decrease v.(使使)变小变小,(使使)减少减少n.减少减少教材原句But although the virus caused the rabbit population to decrease from 130,000 to around 10,000,it also meant less food for the cats.(P51)但是虽然病毒使得兔子数量从13万降到了大约1万,但是这也意味着猫的食物减少了。语境巧练单句语法填空(1)They are making every effort(decrease)the production cost.(2)Is your p
6、roduction the decrease?(3)There has been decrease in our imports this year.小话题写作(4)今年新学生的数目从3 500减少到了2 500。This year the number of new students .to decreaseonadecreased from 3,500 to 2,500考点必记on the decrease在减少There is a decrease in.有所减少反义词increase v./n.增加名师点津decrease与lessen,reduce的含义均是“减少,变少”。decre
7、ase指逐渐地、不断地减少;lessen指数目、程度、价值、实力等的减少。reduce是普通用词,含义广。指数量、程度的降低或减少。4.trap n.夹子夹子,陷阱陷阱教材原句In the 1980s,traps and dogs were used to catch the cats.(P51)在20世纪80年代,陷阱和狗被用来捉猫。语境巧练单句语法填空(1)Li Hua has found it was caught in trap of his own making.(2)If you(trap)somewhere,something falls onto you or blocks y
8、our way and prevents you from moving or escaping.小话题写作(3)我中计了,承认自己撒谎。I that I had lied.aare trappedwas trapped into admitting考点必记set a trap for为设下圈套trap sb into doing sth诱骗某人做某事名师点津trap作名词“夹子,陷阱”讲时是可数名词;作动词时,意为“拦住,设陷阱捕捉;诱捕”。5.explode v.突然增加突然增加教材原句It turned out that they developed an immunity to the
9、 virus,and their numbers exploded once again.(P51)结果它们对这种病毒产生了免疫,它们的数目再次猛增语境巧练单句语法填空(1)To my surprise,the population of the wild animals (explode)since two years ago.(2)The(explode)of the chemical plant has poisoned many local residents.has explodedexplosion小话题写作(3)活火山随时都有可能爆发。An active volcano.考点必记
10、explode with anger勃然大怒explosion n.爆炸(声)名师点津(1)explode的基本含义是“爆炸”,主要指炸弹、油箱、锅炉等的内部能量突然释放;引申为“迅速扩大,激增”。也可用来指人“勃然大怒”“破除”等。作“破除”讲时,其宾语多为理论、信念等抽象名词。(2)explode既可作及物动词,也可作不及物动词。may explode at any time6.owe v.应该做应该做;对对负有负有的义务的义务教材原句This intervention is a long,much-delayed ending to a sad story,but we humans o
11、we it to the island to give it a happy ending.(P51)这种干预需要耽搁很久才能结束这个悲剧故事,但是我们人类有责任给这个岛屿一个美好的结局。语境巧练单句语法填空(1)If I have improved in any way,I owe it all you.(2)We owe to society to make our country a better place.小话题写作(3)为这部车我们还欠着100美元。We still for the car.翻译句子(4)我应向他道歉。toitowe one hundred dollarsI owe
12、 him an apology.考点必记owe it all to sb一切都归功于某人owe sth to sb把某事归功于某人owe sb an apology该向某人道歉owe it to sb to do sth做某事是某人的责任owe sb for sth因为某事欠某人钱名师点津owe表示“欠某人债,应该向(某人)付出”,引申为“某人对他人、国家负有感激义务等或某人把发现、原理、成就等归于他人”。owe用作及物动词,其后接名词或代词作宾语,也可接双宾语。parison n.比较比较教材原句Data,examples and comparisons are then used to s
13、upport the main ideas.(P56)然后,数据、例子和比较被用来支持中心思想。语境巧练单句语法填空(1)My nephew is rather dull in(compare)with others.(2)We can only tell good from bad parisonby 句式升级(3)We are living a happy life,in comparison with the people living in the 1960s.(升级为过去分词短语作状语)the people living in the 1960s,we are living a ha
14、ppy life.Compared with/to考点必记in comparison with和相比by comparison通过对比compare v.比较,与类似compare A with B把A和B进行比较compare A to B把A比作Bcompared with/to与相比8.on behalf of 代表代表教材原句It is my great pleasure to give a lecture here on behalf of the Be at One with Nature Association.(P56)我很高兴代表“天人合一组织”发言。语境巧练单句语法填空(1
15、)He spoke behalf of all the members of the faculty and staff.(2)He accepted the invitation on behalf the whole class.小话题写作(3)我将代表全体毕业生讲话.Ill make a speech .onofon behalf of all the graduates考点必记on behalf of sb=on sbs behalf做某人的代表in behalf of sb=in sbs behalf做某人的代表或代言人represent作动词,意为“代表”。写作佳句On behal
16、f of the students in my class,I express our gratitude to you for all you have done for us.我代表我们班的同学,感谢您为我们所做的一切。9.endangered adj.濒临灭绝的濒临灭绝的教材原句Although endangered elsewhere in China due to the invasion of foreign species,the bees of Shennongjia have coexisted with the local people for centuries.(P57
17、)虽然由于外来物种的入侵,这种蜜蜂在中国其他地区濒临灭绝,但是神农架的蜜蜂却与当地人共处了数个世纪。语境巧练单句语法填空(1)Many of the earths animals have already died out;and several other species(endanger).(2)Icy roads are a hidden(endanger)to motorists.(3)It was a(danger)climb,but they braved it out.小话题写作(4)我们应该竭尽全力挽救濒临灭绝的物种。We should try our best.endangereddangerdangerousto save endangered species考点必记danger n.危险endanger v.使面临危险,危害dangerous adj.危险的in danger处于危险之中名师点津endangered作“濒临灭绝的”讲时,在句中作宾语、表语和补足语等。
