了解词根可以在 GRE 考试中以两种主要方式帮助你。首先，了解词根可以帮助你可以学习包含特定词根的一整组单词，而不是一次学习一个单词。它们在含义上是相关的，所以如果你记住了一个，你就更容易记住其他的。其次，词根通常可以帮助你解码不认识的 GRE 单词。如果你认出一个熟悉的词根，你就可以很好地掌握这个词来答题。下面是常见的GRE填空单词及相关词根的分享。（A-B）

A/AN: not, without

agnostic:one who believes the existence of God is not provable

amoral:neither moral nor immoral; having no relation to morality

atrophy:the wasting away of body tissue

AB: off, away from, apart, down

abdicate:to renounce or relinquish a throne

abject:cast down; degraded

abstract:conceived apart from concrete realities, specific objects, or actual instances

abstruse:hard to understand; secret, hidden

ABLE/IBLE: capable of, worthy of

changeable:able to be changed

combustible:capable of being burned; easily inflamed 

AC/ACR: sharp, bitter, sour

acerbic:sour or astringent in taste; harsh in temper

acid:something that is sharp, sour, or ill-natured

acrimonious:caustic, stinging, or bitter in nature

acumen:mental sharpness; quickness of wit

ACT/AG: to do, to drive, to force, to lead

agile:quick and well-coordinated in movement; active, lively

pedagogue:a teacher

AD: to, toward, near (often the d is dropped and the first letter to which a is prefixed is doubled.)

accede:to yield to demand; to enter office

addict:to give oneself over, as to a habit or pursuit

adjoin:to be close or in contact with

AL/ALI/ALTER: other, another

alias:an assumed name

allegory:figurative treatment of one subject under the guise of another

altruist:a person unselfishly concerned for the welfare of others

AM: love

amateur:a person who engages in an activity for pleasure rather than financial or professional gain

amity:friendship; peaceful harmony

amorous:inclined to love, esp. sexual love

AMBI/AMPHI: both, on both sides, around

ambidextrous:able to use both hands equally well

ambient:moving around freely; circulating

ambiguous:open to various interpretations

AMBL/ABUL: to go, to walk

ambulance:a vehicle equipped for carrying sick people (from a phrase meaning “walking hospital”)

ambulatory:of, pertaining to, or capable of walking

perambulator:one who makes a tour of inspection on foot

ANIM: of the life, mind, soul, breath

animosity:a feeling of ill will or enmity

equanimity:mental or emotional stability, especially under tension

magnanimous:generous in forgiving an insult or injury

ANNUI/ENNI: year

annals:a record of events, esp. a yearly record

annual:of, for, or pertaining to a year; yearly

perennial:lasting for an indefinite amount of time

ANT/ANTE: before

antecedent:existing, being, or going before

antedate:precede in time

antediluvian:belonging to the period before the biblical flood; very old or old-fashioned

ANTRHO/ANDR: man, human

androgen:any substance that promotes masculine characteristics

androgynous:being both male and female

misanthrope:a person who hates humans or humanity

APO: away

apocalypse:revelation; discovery; disclosure

apogee:the highest or most distant point

apostasy:a total desertion of one’s religion, principles, party, cause, etc. 

ARCH/ARCHI/ARCHY: chief, principal, ruler

anarchy:a state or society without government or law

monarchy:a government in which the supreme power is lodged in a sovereign

oligarchy:a state or society ruled by a select group

ARD: to burn

ardent:burning; fierce; passionate

ardor:flame; passion

arson:the crime of setting property on fire

AUTO: self

autonomy:independence or freedom

autocrat:an absolute ruler