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-MPT
acid-green
actinide element
amictus
ancien
arthrepsology
Aunt Sally/Sallies/Sallys
Aves, Is.de
backing shunting
bring ... up
burgularie
calanthe reflexa maxim.
canvas band
cauliflowerets
commercial indirect expenses
concentrator station
convolutional encoding
course shift
cradle-snatching
CRAM deck
customs house fees
definish
depocentre
desight
dragon eyes
electrothermic industry
Elian
ethnomusicologic
fatso
fecalomas
Feltwell Fens
field intensity metern
filminess
Friedmannian
Gowers' tract
gynoeciums
high-opacity foils
Hoegtveitite
hydroxycholic acid
hyperlysinaemia
in synchronism
intermediolateral nucleus
isolator
isonoruron
Itiquira
kissogrammed
lathe chuck
lean mo(u)lding sand
lipofections
locustas
louise nevelsons
low buoyance
machine room width
needle furzes
non ferrous
occasion-setting
ochraqualf
ocuscan
ofdrunken
old-worldly
P. & T.
Pentecostalist
phthisiogenetic
plaisirs
Plicatoperipatus jamaicensis
poetic justice
porta-bote
primary derivative
private branch exchange equipment
purchasing cost
queller
rankine hugoniot relations
rebail
revengings
Rokitansky-Aachoff sinuses
rosersberg
sandmann-andra syndrome
scaled decimal arithmetic
Schmorl's disease
scuffle-hunter
secondary flaw
sensory logic channel
sign bit acquisition system
significant value
slow marches
smoke obscuring screen
soft-wood tar pitch
sokoloff
somebody's
sphagnum peat
stubble mulch farming
subtenure
supergrains
trechoure
tricrotic wave
tropomodulin
turnover of fixed assets
unestimable
ungulae
vestigial sideband modulation
weynde
whirrit