时间:2018-12-19 作者:英语课 分类:英语PK台


英语PK台 第714期:词根词缀背单词(9) - 英语课
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  1. 1 英语PK台 第714期:词根词缀背单词(9) 英语课
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
a capite ad calcem
Acerdise
achylia gastricas
actual gross ton kilometers
altho'
auriscopes
back connected fuse
baimiao
belgia
black smoker complex
blowdown pressure of safety valve
bragg wavelength
burkard
carpar
catalyst oven
caveman
cessation of interest
cetene number
chemosynthetic labelling
Coptic Orthodox Church of Alexandria
coutrement
Direnal
distribution database
driving wheels
empirical mass formula
endomorphy
ethmia crocosoma
execute process
fatty iodine value
finishing agent TS-4 for leather
flag locker
fortress-monastery
gari
gastriloquist
Gaussian elution band
hemicryptophyta casespitosa
highly polluted
hit someone for six
homology-dependent gene silencing
hyporchemata
impalpable structure
jahnsite-(CaMnMg)
juggled
Jumprock
karhunen
kinleys
Kitros
lehr loader
lifetechnology
ligamenta glenohumeralia
loading port
loss contour
Lotfabad
Maisières
manganese-Hoernesite
marenas
Muhlenbergia hakonensis
natural granary
nebularia telescopium
night-table
nine-part canon
open-records
OR operator
parazon
Parnell, Charles Stewart
pihlite
planetary rotation rate
postsynaptic membrane
Ptilimnium
pulse transmission mode operation
pustular herpes gestationis
reticulodromous
revindicates
rolling-mill housing
rosin-core solder
sale by auction
Saybolt chromometer of petroleum products
scarlet kafirlily
scrithel
separable sum approximation
silkwoods
Sobral Peninsula
Sost
stiffened shell
striping cross-section
Syngachor
tab ball grid array
thrash
through bill
time elapse indicator
total sample
Tourtual's sinus
triple motion agitator
uk -fitting
uk -hearted
upper sternopleural bristle
virtual hitch point
wagh
weather worn
west europe
WinDirStat
wire rope haulage