20XX最新新概念英语三册课后练习答案lessons 19~21.docx

新概念英语三册课后练习答案lessons 19~21 　Lesson 19 1a 2b 3a 4b 5d 6a 7b 8d 9c 10b 11c 12a 　新概念3课后习题解析： 　Multiple choice questions多项选择 　1. A正确could and would愿意并有能力companion n.同伴,共事者 　2. B正确on what conditions在什么样的基础之上 　reveal vt.展现,显示,揭示,暴露 　3. A正确greatly adv.很,非常 　4. B正确for a great many years(用完成时) 　5. D正确 　6. A正确reaction n.反应,反作用根据语法规则： 　主语是ambition, duty, goal, hope, idea, intention, mistake, plan, policy, purpose, reaction, suggestion等名词的时,句子的表语必须是to不定式短语,该不定式短语是说明其内容的 　-- His purpose in life was to seek truth instead of money. 　-- Our plan is to make better use of this material. 　7. B正确for fear + of/that 　-- They are working hard for fear that they should fail. 　= They are working hard for fear of failure. afraid for侧重点表示：为...感到担心,害怕失去 　-- The parents are often are afraid for their children.父母常为孩子担心。

　-- He was afraid for his job.他害怕丢工作 -- I am not afraid for my head.我不怕掉脑袋 　8. D正确修饰money用large 　9. C正确 　measured adj.慎重的,有节奏的,标准的,整齐的,有规则的 　regular adj.强调有规则的 　disciplined n.受过训练的,遵守纪律的 　10.B正确 　go for a walk = go for a stroll go on/for a trek进行艰苦的跋涉-- trek n.牛拉车旅行,艰苦跋涉go for a trot去散步 　-- trot n.小跑,骑马,疾走,忙碌lane n.(乡间)小路,巷,里弄 　-- I’m going for a trot down the lane.我正沿着巷子小跑 　11.C正确sure enough = as (was) expected without a doubt adv.无疑地as a matter of fact adv.事实上(in fact = actually实际上,事实上) 　12.A正确healthy adj.健康的,健壮的sane(adj.神志清楚的,头脑清楚的)= sensible(明智的,有判断力的) 　新概念3课后习题答案： 　Lesson 20 1c 2b 3b 4c 5a 6c 7d 8a 9c 10d 11a 12d 　新概念3课后习题解析： 　Multiple choice questions多项选择 　1. C正确develop(vt.使显出,出现,产生) take-off(n.起飞) 　2. B正确 　3. B正确forced landing迫降properly(adv.适当地,完全地) 　4. C正确序数词和不定式搭配连用 　5. A正确not till / not until 　6. C正确有just一般用完成时 　7. D正确promised vt.预示(有可能发生好的迹象) 　threaten预示的恶兆 　-- The river of liquid rock threatened to surround him completely, but Tazieff managed to escape just in time. 　这股岩浆威胁着要将他团团围住,但泰哲夫还是设法及时躲开了。

　8. A正确 　9. C正确 　no further修饰距离(-- I can walk no further.我再也走不动了) 　no longer修饰时间或长度(-- He no longer lives here.他再也不住这了) 　no more修饰某物(-- I can eat no more.我再也吃不下了) 　10.D正确 　-- The ship rode the waves.这艘船漂浮在水面上 　hold water论点或观点站得住脚 　-- What you said doesn’t hold water.你的话站不得住脚 　Watertight adj.无懈可击的,不漏水的,不透水的 　-- a watertight contract.严密的合同 　11.A正确 　12.D正确 　immense adj.修饰面积大得难以测量grand adj.雄伟的,壮丽的,盛大的 　新概念3课后习题答案： 　Lesson 21 1b 2d 3c 4a 5a 6b 7b 8a 9c 10a 11a 12d 　新概念3课后习题解析： 　Multiple choice questions多项选择 　1...D grasp vt.抓住,掌握,领会n.抓住,掌握,领会 　establish vt.建立,设立,确定,证实 　2...D in favor of adv.赞同,有利于 　3...C apart from除什么之外还有supplement vt.补足,补充 　4...A 　5...A 　6...B 　7...B owe people money = owe money to people 　8...B 　vivid adj.生动的,鲜明的,鲜艳的,活泼的,逼真的 　personality n.个性,人格,人物,名人character n.特性,性质,特征,人物image n.图象,肖像,偶像 　imaginative adj.想象的',虚构的adj.富于想象的,有想象力的 　9...C 　exceptionally(adj.例外的,异常的) à unusually(adv.显著地,不同寻常的) -- An exceptionally beautiful girl. 　marvelously(adj.不可思议的,非凡的) = wonderfully(adv.奇妙的,奇异的) singly adv.单独的 　unequally adv.不相等地,不公平地,独一无二的 　10...A rise vi.n. 　11...A 　jealous adj.妒忌的,猜疑的,警惕的,嫉妒的disinterested adj.无私心的,廉洁的,公正的adj.[美口]不关心的,不感兴趣的revolt v.反抗,起义,反叛 　revolted adj.起来反抗的,起义的,厌恶的 　12...D 　beat = defeat 　conquer vt.征服,战胜,占领,克服 5 / 5。