以下是小站教育小编为同学们整理的SSAT写作考试词根总结，希望对大家的备考有所帮助。
1.后缀
后缀可以告诉我们单词的词性。举例：以下SSAT都包含基本的后缀。
-ness happiness, friendliness
-able perishable, amiable
-ous androgynous, fibrous
-ity animosity, charity
-ology psychology, sociology
-ical tyrannical, hypothetical
-archy monarchy, anarchy, matriarchy
-less fearless, artless
2.前缀和词根
前缀在单词的开头，词根可以在单词的任何位置。这两种单词的部分都对记忆单词有很大帮助。比如，考生遇见vociferous，可以思考其中voc这个词根，尽量想出同样含有voc的其它单词。我们知道vocal和说话有关系，自然可以推断出vociferous同样和说话有关系。如果能想象vociferous表示喊叫，那么剩下的意思也可以记住：说话大声并且不连续的。
注意voc在vociferous和vocal中的发音不同。词根经常会改变发音，很多词根已经出现几百年了。随着时间的推移，不光发音会变化，含义也会变化，所以现在的单词含义已经不是简单的词根累加了。所以词根学习不能取代查字典，只能帮助记忆新词汇并且对词汇进行分组。
考生应该掌握的SSAT后缀，前缀和词根
后缀
X-able adjective "able to be Xed"
X-archy noun "rulership by X"
X-ical adjective "characterized by X"
X-less adjective "without X"
X-ness noun "quality of being X"
X-ology noun "doctrine or theory of X"
X-ous adjective "having the quality of X"
前缀和词根
a without
ab/ abs away from, against
ac/ acr sharp
ad/ at to, toward
am to love
amb to go, to walk
anim life, spirit
ante before
anthr/ andr mankind, man
anti against, opposite
apt/ ept skill, ability, fit
bell war
bene good
bi two
carn flesh
chron time
circ/ circum around
cis to cut
cli to lean
clu/ clo/ cla to close, shut
co/ com/ con with, together
cred believe
culp blame
cur/ cour to run
de away from/ the opposite of
dem people
derm skin
di apart, through, away
dic to say, to tell
dign/ dain worth
dis apart, away from, not
dys faulty, bad
epi upon
equi/ equ equal
esce to become
eu good, pleasing
ex/ ej out, put out
extr outside, beyond
fac to make, to do
fic/
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fig to make, to dofid faith, trust
gen birth, creation, kind
gyn woman