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
3'-amino-3'-deoxy-ATP
acid carmoisine b
aggregation of data
allozyme
auxiliary ventilation
be deaf to all advice
be on the shoot
blove
Bogomile
braley
buzzing in brain
centropliorus atromarginatus
circuit-breaker oil
common display logic
conseqution
daysails
despersive liability
Dinercaprol
district-based
drain diode
E6-AP
ergot alkaloid
esfahans
exaltedly
factory capacity utilization
feed water reservoir
FHM (fuel handling machine)
fore-aft datum marks of shafting
garderobe
get laid
golden everlastings
Hansa brilliant yellow
Hertz doublet antenna
hyperaccess
intractive
leguminous plant
lemuroid
lerisetron
linolenic acids
m.g
man portable laser
mechanical discharger
metallacyclopentenes
miescher's granuloma
modus ponens argument
monocomponent
mulgan
multiplicatrix curve
nanohybrids
navigational flight chart
Noble Lake
notchweed
nuculane
odd-line interlace
Oersted experiment
oesophagoplegia
organic solvents
out-buildings
paraseptum cartilage
peach wood
percent of late wood
phantom element
phantom telgraph circuit
phenylpropiophenone
piano fingers
pre-employment
premature births
probability moment
radar engineering
relearned
repair and servicing time
ringdowns
safe shutdown earthquake
saints' days
sealey
Senoi
shake-hands
Signy-le-Petit
sintering jar
skatole
skewed projection
smice
SMLT
southern pine
spirit-lamp
spray penetration ratio
star-fields
sulcul
temperature factor
tent caterpillar moth
third molar gouge
tithinde
tocleave
total conductivity
transverse wire brushing
trietbhlene phosphoramide
valve distributing mechanism
Vicia wushanica
Web authoring software
which includes
Windows8
yellow meal worm