1. C 根，根部　 the part of a plant that grows down into the soil in search of food and water; the part of a tooth, hair, etc. that holds it to the rest of the body
2. C 根本，根源　the fact or condition from which sth begins, or by which sth is caused
3. P 祖籍，原籍　 origin

　destroy ～s　毁坏根部
　dig out the ～s of　挖掉…的根
　dig up a ～　掘根
　get at〔to〕 the ～s of　追究…的真相，寻根摸底
　have the ～ of industry　有勤劳的品质
　pull out ～s　把根拔出
　put down ～s　扎根，在某处定居下来
　strike ～　扎根
　strike at the ～ of　彻底摧毁，打击…的根部
　take ～　生根，扎根
　trace ～　追溯起词/cn>
　uncover a ～　挖根
　unearth a ～　挖根

形容词+～

　ancient ～　远古的起词/cn>
　deep ～s　深深的根
　humble ～s　微贱的起词/cn>
　long ～　长根
　noble ～s　高贵的祖籍
　old ～　老根
　same ～　同样的起词/cn>
　strong ～　粗壮的根
　suspicious ～　可疑的起词/cn>
　thick ～　粗根
　undetermined ～　不明的起词/cn>
　unknown ～　不明的起词/cn>

名词+～

　cube ～　立方根
　square ～　平方根

～+名词

　～ cause　根本原因
　～ crops　块根作物
　～ hair　根须

介词+～

　at the ～　从根本上
　by the ～　根本上，从根部，连根
　German by ～　原籍德国

～+介词

　～ of a word　词根
　～ of all evil　万恶之词/cn>
　～ of civilization　文明之渊词/cn>
　～ of spectacles　眼镜的起词/cn>
　～ of the hair　发根
　～ of the matter　事情的根词/cn>
　～ of the tongue　舌根
　～ of trouble　祸根

　The fence posts took root and grew into the earth.　篱笆生了根，长在了地里。
　The root grows down.　根向下长。
　Even if you plant the seed upside down, the roots will still grow down.　即使你把种子倒过来种，根须还是往下长。
　Mind you don't stumble over these roots, they're difficult to see under these leaves.　当心别让这些树根绊倒，它们埋在这些树叶底下不容易看到。
　New bushes can be reproduced from roots taken from the parent plant.　灌木可以由母本取下根来繁殖。
　When we returned from our holidays after only three weeks, the whole garden was grown over with strong plants with wide leaves and long roots.　我们只在外面度了三周假，整个花园便长满了一种叶很宽，根很长的植物。
　You have to dig down deeply to fork up the roots.　你得深挖一些才能耙出根来。
　Cover the roots of the plant with earth.　用土把植物的根盖住。
　He caught his foot on a tree root and stumbled.　他一只脚绊在树根上，几乎跌倒。
　I stumbled over a tree root.　树根绊了我的脚。
　She flushed to the roots of her hair.　她的脸红到脖子根。
　College graduates should answer the Party's call to go down to the grass roots units.　大学毕业生应响应党的号召到基层单位去。
　His selfishness was the root of trouble.　他的自私是苦恼的根源。
　Her roots are in Scotland where she was born.　她的老家在苏格兰，她是在那儿出生的。

 ♣ at (the) roots　
　本质上　in the fact of points
　We must go deeper and strike at the roots of the trouble.　我们要深入下去，抓住问题的症结所在。
 ♣ root and branch〔root-and-branch〕　
　连根带叶；彻底的　completely; complete
　The question was analysed root and branch and they found it is wrong.　他们对这道题进行了彻底的分析以后，才发现它是错的。
　If I don't explain root and branch, he'll be unfairly blamed.　如果我不作彻底的解释，他就会受到不公正的责备。
　What can the opposition party do to bring this government to its root and branch?　反对党怎样行事才能彻底击败政府呢?
　This could not be considered a root-and-branch solution.　这不能被认为是一个彻底的解决办法。
　He chanced on the root-and-branch solution to his problem.　他偶然找到了彻底解决问题的办法。
　His problems did not really admit of root-and-branch solution.　他的困难没有彻底的解决办法。

　vi. & vt.（使）生根，（使）扎根 (cause to) form roots

　～ easily　很容易生根
　～ fundamentally　基本上生根
　～ partially　部分生根
　～ probably　可能生根

　Does the rose root easily?　玫瑰容易生根吗?
　Who's been rooting about among my paper?　谁翻过我的文件?
　We will all be rooting for you.　我们全都支持你。
　The tree rooted itself very quickly.　这树扎根很快。
　Our movement is rooted in the hearts of the people.　我们的运动植根于人民的心中。
　The customs are rooted in tradition.　这些风俗牢固地建立在传统基础之上。

 ♣ root out　(v.+adv.)
1. 彻底根除 destroy or get rid of sth bad completely
　Bridges over railroad tracks root danger out in crossing.　铁轨上空的天桥排除了穿行中的危险。
2. 〈口〉搜寻 find by search
　They even root out their homes without any reason.　他们甚至毫无理由地搜查了他们的家。
　They root out every part of the building.　他们在全楼进行了搜查。
　They were rooting out fossils.　他们在找化石。
　She climbed the slippery slope with difficulty to root out herbs.　她艰难地爬上滑坡寻找草药。
 ♣ root up　(v.+adv.)
　杜绝　put an end to
　Can we ever root poverty up from the world?　我们有朝一日能消除世上的贫困吗?
　It is not easy to root a bad habit up.　改掉坏习惯是不容易的。

 ♣ root, applaud, cheer
　参见applaud条。

　［同义词］ n. base, basis, beginnings, bottom, cause, ore, crux, essence, foundation, germ, heart, nub, origin, stem v. rootle
　［词源］　古英语rot（根）