词根tract(attract-contract-protract-retract-subtract-extract) 课件(共26张PPT) -2026届高三英语一轮复习

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词根tract(attract-contract-protract-retract-subtract-extract) 课件(共26张PPT) -2026届高三英语一轮复习

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(共26张PPT)
tract--
作词根“拉拽拖引”
attract
contract
distract
distract
retract
extract
protract
subtract
attract
tract
拉拽
attract
at- (朝向) + tract (拉) = 拉向(自己)
The magnet attracts all the iron nails nearby.
(磁铁吸引了附近所有的铁钉。)
vt. 吸引, 引起…的注意
vi. 具有吸引力
/ tr kt/
一位魅力四射的人走进房间,所有人的目光都不由自主地被吸引(拉向) 过去。
一块磁铁把铁钉拉向自己。
attraction
含义:吸引力;吸引;有吸引力的人或事物;旅游景点
例句:The main attraction of the city is its ancient castle.
attractive
含义:有吸引力的;迷人的;诱人的
例句:She found the proposal very attractive.
派生词:attractively (副词) - 迷人地 attractiveness (名词) 魅力
unattractive
含义:没有吸引力的;不美的;乏味的
例句:The deal became financially unattractive.
派生词:unattractively (副词) - 不吸引人地--unattractiveness (名词) - 缺乏吸引力
attractor (英式英语常用 attracter)
含义:有吸引力的人或物;
【物理学】吸引子
例句:The new shopping mall became a major attractor in the region.
attract
tract
拉拽
distract
distract
dis- (分开,离开) + tract (拉) = 将(注意力)拉走。
The noise outside distracts me from my homework.
(外面的噪音让我写作业时分心。)
vt. 转移;分心
/d str kt/
你正在学习,窗外有人大叫,你的注意力被从书本上拉开(dis-tract) 了。你的思绪被“拉”到了别处。
distraction
含义:分心的事物;注意力分散;娱乐,消遣
例句:The noise from the construction site is a constant distraction.
distracted
含义:注意力分散的;心烦意乱的
例句:He seemed distracted during the meeting and couldn't focus.
派生词:distractedly (副词) - 心烦意乱地,注意力不集中地
distracting
含义:令人分心的
例句:Please turn off that distracting music while I'm working.
distractive (使用频率较低)
含义:导致分心的(与 distracting 同义,但更书面化)
destruct
含义:破坏,摧毁(词根 struct 是“建造”,de- 表示“向下、相反”)
例句:This tape will self-destruct in 30 seconds.
attract
tract
拉拽
distract
contract
contract
con-(共同) + tract(拉)=共同(朝中心)拉
Metals contract when they get colder.
(金属遇冷会收缩。)
The two companies signed a contract.
(两家公司签署了一份合同。)
vi. 感染;订约;收缩
vt. 感染;订约;使缩短
n. 合同;婚约
/ k ntr kt/
收缩:一只刺猬遇冷缩成一个球。
合同:两人握手,手下垫着文件。
contraction /k n tr k. n/
含义:收缩,缩小
例句:The contraction of the muscles helps in movement.
肌肉的收缩有助于运动。
subcontractor / s b.k n tr k.t /
含义:分包商,转包商
例句:The electrical work was done by a subcontractor.
电工活是由一个分包商完成的。
contractor / k n.tr k.t /
含义:承包商,承建商
例句:We hired a building contractor to manage the construction of our new house.
我们雇了一个建筑承包商来管理我们新房子的建造。
contractual /k n tr k.t u. l/
含义:合同的,契约规定的
例句:It is our contractual obligation to deliver the goods by Friday.
在周五前交付货物是我们的合同义务。
派生副词:contractually (按合同规定地)
例句:You are contractually obliged to give one month's notice.
根据合同规定,你必须提前一个月通知。
contractible /k n tr k.t .b l/
含义:可收缩的
例句:The material is highly contractible when exposed to heat.
这种材料在受热时具有高度的可收缩性。
attract
tract
拉拽
distract
contract
extract/abstract
extract
ex-(出) + tract(拉)=将(...内容)向外拉拽
We can extract juice from fruits.
(我们可以从水果中提取果汁。)
vt. 摘录;提取;榨取;取出
n. 摘录;榨出物;汁;选粹
/ ekstr kt/
想象:从橙子里拉拽出果汁,或牙医拔牙。
extraction / k str k. n/
含义1:提取,提炼;采掘
例句:The extraction of natural gas from shale rock has increased.
从页岩中提取天然气的量增加了。
含义3:拔出(牙齿)
例句:She had a painful tooth extraction last week.
她上周经历了一次痛苦的拔牙。
含义2:血统,出身
例句:He is of Korean extraction.
他是韩国血统。
extractor / k str k.t /
含义:提取器;抽油烟机;排气扇
例句:We need to install a new kitchen extractor fan to remove cooking smells.
我们需要安装一个新的厨房抽油烟机来排除油烟味。
extractive / k str k.t v/
含义:提取的;采掘的;榨取性的
例句:The extractive industry, such as mining and drilling, can harm the environment.
采矿和钻井等采掘业可能会对环境造成危害。
extractable / k str k.t .b l/
含义:可提取的;可拔出的;可摘录的
例句:This mineral is rich in extractable gold.
这种矿物含有大量可提取的黄金。
abstract [abs-(离开,从) + tract(拉)] → 抽象的;提取;摘要
/ bstr kt/
n. 抽象;摘要;抽象的概念
adj. 抽象的;深奥的
vt. 提取;摘要;使……抽象化
vi. 做摘要;写梗概
We can extract juice from fruits.
(我们可以从水果中提取果汁。)
The concept of "love" is an abstract idea.
(“爱”的概念是一个抽象的观念。)
It's difficult to abstract the key points from such a long report.
(很难从这么长的报告中提取出关键点。)
attract
tract
拉拽
distract
contract
extract/abstract
subtract
subtract
sub-(在下面) + tract(拽)=
从整体中拉走一部分,导致总数减少。
If you subtract 2 from 5, you get 3.
(五减去二等于三。)
vt. 减去;扣掉
/s b tr kt/
桌上有6块堆在一起的糖果。一只手从这堆糖果中拿走(拉走)了1块,放到一边。现在桌上只剩下5块糖果。这个“拿走导致数量变少”的动作
attract
tract
拉拽
distract
contract
extract/abstract
subtract
protract
protract
pro-(向前) + tract(拉)=将(...)拉长
They protracted the negotiation for weeks.
(他们将谈判延长了数周。)
vt. 延长;绘制;伸展
/pr tr kt/
想象两个人拉着一根橡皮筋的两端,向前拉(pro-tract),橡皮筋就变长了。
这个 “将某物在时间或空间上向前拉扯,使其变长” 的动作,就是 protract。它通常带有一种 “被强行拉长”、“拖沓” 的消极感觉。
attract
tract
拉拽
distract
contract
extract/abstract
subtract
protract
retract
retract
re- (回) + tract (拉) = 拉回去。
The turtle can retract its head into its shell for protection.
(乌龟能把头缩回壳里保护自己。)
You may retract that statement.
你可以撤回那个声明。
vt. 缩回;缩进;取消
vi. 缩回;缩进;撤消
/r tr kt/
乌龟把头缩回壳里。
retreat (tract 的变体,拉) = 拉回去-----“v.撤退,n.休息寓所”。
tract 和 track 源自同一个拉丁语词根 trahere,意为 “拉,拖”。
它们在漫长的语言演变中,形式发生了分化,但核心概念紧密相连。
tract 更侧重于 “拖拉”这个动作本身 。
track 更侧重于 “拖拉等动作所留下的痕迹或路径”。
track
/tr k/
n. 足迹,踪迹;轨道;小道
vt. 追踪;通过;循路而行;用纤拉
vi. 走;追踪;留下足迹
attract
tract
拉拽
distract
contract
extract/abstract
subtract
protract
retract
1.The company was forced to ______ its statement after it was proven false.
A. retract B. attract
C. protract D. distract
2.Loud noises can easily ______ a student who is trying to study.
A. attract B. contract
C. distract D. extract
3.The lawyer asked to ______ the meeting for another hour to review the details.
A. subtract B. protract
C. retract D. attract
选择合适选项
retreated, extraction, distraction, attractive, contraction, subtractions
The __________ of raw materials is an important industry in some countries.
The __________ of the economy led to many job losses.
She found the offer very __________ and decided to accept the job.
The cat has __________ claws that it can hide when not needed.
Please check your calculations; I think there are some errors in the __________.
The soldier __________ from the enemy fire to a safer position.
extraction
contraction
attractive
retractable
subtractions
retreated
选词填空

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