时间:2018-12-19 作者:英语课 分类:英语PK台


英语课

 一个英语单词可分为三部分:前缀(prefix)词根(root)后缀(suffix)。位于词根前面的部分就是前缀。前缀,可以改变单词的意思。


contra- 表示“反对,相反”
contrary = contra + ry → adj. 相反的
contradict = contra + dict(说)→ 反着说 → v. 同…矛盾
contrast = contra + st(站)→ 反着站,面对着站 → vt. 对比;反差
counter-表示“反的,反对”
counteract 1 =counter + act(行动)→ 反对的行动 → v. 抵抗
counterpart = counter + part(部分)→ n. 对应的人或物
de-
1. 表示“去除,取消”
desperate = de + sper(希望;prosperity → pro 2 + sper +ity → 前面有希望, → n. 繁荣昌盛)+ ate → 去掉希望 → adj. 绝望的
despair = de + spair(由sper派生而来)→没了希望 →n./v. 绝望 
detect = de + tect(遮盖;protect = pro + tect → 在没遇到危险前就遮盖 → v. 保护)→ 去掉遮盖 → v. 发现,侦查
2. 表示“否定,反”
decompose 3 = de + compose(组成)→ 与组成相反 → v. 分解
destruction = de + struct(建造)+ ion → 与建造相反 → n. 破坏 

1 counteract
vt.对…起反作用,对抗,抵消
  • The doctor gave him some medicine to counteract the effect of the poison.医生给他些药解毒。
  • Our work calls for mutual support.We shouldn't counteract each other's efforts.工作要互相支持,不要互相拆台。
2 pro
n.赞成,赞成的意见,赞成者
  • The two debating teams argued the question pro and con.辩论的两组从赞成与反对两方面辩这一问题。
  • Are you pro or con nuclear disarmament?你是赞成还是反对核裁军?
3 decompose
vi.分解;vt.(使)腐败,(使)腐烂
  • The eggs began to decompose after a day in the sun.鸡蛋在太阳下放了一天后开始变坏。
  • Most animals decompose very quickly after death.大多数动物死后很快腐烂。
标签: 英语PK台
学英语单词
2-aminobutane
a fine figure of a man
a-yo
academic major
acute mediastinitis
agin
AMVI
anconeous
Aspreys
asyndetism
auditory scene analysis
automaticsize
bale slicer
ballast leakage resistance
Bandgaon
beerhead
Bellman's equation
blairmen
breadth-and-depth-first search
cannon-shot
chodorow
compound wound current transformer
correlation detection
denarrativization
dostounix
drave
drosses
dry-laid masonry dam
due east
dynamic action between wheel and rail
edith head
ektogenic
elementary chain
equilibrium of firm
facilities for travel
fairybooks
Feathers fly
flight gyro
friction sawing
friggin'
give new life into
guided missile fire control system
Haematobia irritans
half-line pulse
harbo(u)r chart
henebry
hollow ground slide
homofascists
hosey
Hypodorian mode
in the open air
in-network
indic hydroxide
langsdorfii
leaped out
ligsam
localized disease
low-alloy
Loyolite
Marresale
melted iron
misdemeans
mortgage interest relief
moving-coil pickup
navigation keys
Nawar
Neidenbach
nickeliferous grey antimony (ullmannite)
nonbanking financial institutions
nowalk
olivospinal tract
onion butter
Ooamy
oraison
over-active
pedestrian crossing ahead
permeability vitamin
plastic lousing
predetermined camber
prompter's box
rafraichissoir
rebbit
safety certificate
San Martino Buon Albergo
segols
sensible shoes
service road
skip bus
solar generator
St Keverne
staggart
stealthy aircraft
Steiner analysis
submember
tail amputation
template matching
Thesprotian
thin film oven test
unitas personarum
visit and search
water jet boat
wireless code division multiple access