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
absenter
add salt to
adrar tedjorart pk.
americanborn
ampster
anopia
anti-rorpedo armament
attack politics
berthing charge
Bilacari
bouch
brenchley
bydrogen-poor star
calaena ore
calibre gauge
California anchovy
carves up
Case-hardener
caudal cerebellar peduncle
colit
commercial airliner
common brick clay
common register system
consarn it
cutaneous coccidioidomycosis
cuts to the chase
cutting-tables
dataglove
Dauphin Island
deiss
delight in something
dextran
digital output module
digital video player
edge flux
electrostatic quadrupole lens
EOR
evasee chimney
exhaust pipe line
fallout plot
ferre
file folders
genus gasterosteuss
graduate assistantship
growing conditions in north China
Half a Dollar
Howell's unit
imperant
incoherent system
karelinite
keefs
Kārkhāna
Lancaster mixer
leading port
leucocytozoan
liasons
luzhin
manner of discourse
materials field investigation
mcmurdo sd.
menziesia ferrugineas
minginess
mischanneling
Mueller Ra.
Myeongsan
Neolitsea aurata var. undulatula
noise nuisance
nonwords
organolithium
ortyomesocephalous
owen glendowers
PALAEONISCOIDEA
phyllosticta ipomoeae-reptantis
physical radiation effect
pole step
potential-energy difference
premium on forward exchange contract
proper root
pull a poor mouth
qualified technicians
real geometry
renewal of contract
rhintin
ringing signal oscillator
rotating choke-coil
scale space
second adventisms
senado
senderistas
serialism
social crisis
tangerine pith
the rubber meets the road
tie link
tilson
TISS
treating vat
twice or thrice
unstructuredness
wanderable
weak typing
wimpy