28. prove-系列
*improve
approve
export
report
support
sub-：
I support you.
I back you up.
I got your back.
Backup
【辨析】
Opportunity
Chance
Let chance decide.
Let it be.
Let me go.
Let go of me.
5.易混词汇辨析系列（1）
show off
offspring
offset
offence
offensive
defense
defensive
27. proof系列
airproof
*proof
waterproof
fireproof
lightproof
soundproof
woman proof
proof
prove
bulletproof
enrich
enhance
engagement
额外收获：
fatal
ally，alliance
rally
猜一猜：
enlighten
allow
allowance
make allowance for
You should make allowance for his youth. = You should allow for his youth.
cultivate
If you wish to survive you need to cultivate a strong mental attitude.
cultivation
23.其他土
earth
dirt
dirty
concrete
domain
*camp
campaign
campus
champion
physiological
philosophy
technology
ecology
ideology
sociology
slogan
eloquent
8.port-系列（2）
portion
【辨析】
apportion
allocate
distribute
proportion
proportionate
disproportionate
agile
-ile：
agitate
agony
11.由add到a**
*Add
Addition
Additional
*abb-, acc-, add-, aff-, agg-.…
*a**-:
accident
afford
arrest
assign
assist
access
assess
12.Cess-系列
excess
1.able系列
*able
ability
*-ity：
disabled
*dis-:
enable
*en-:
enable sb. to do sth.
comparable
innumerable
practicable
profitable
难词死记：
vulnerable
2. en-系列
enlarge
endanger
Chance
Cancel
Cancer
Constellation
6.Astr-系列
Disaster
Disastrous
Catastrophe
【辨析】
Astrology
Astronomy
anonymous
7.log-系列
dialogue
logical
biological
apologize
psychological
24. air
AQI API
airline
airspace
airway
aircraft
Craft
craftsman
25.易混词辨析系列（2）
*craft
handicraft
crash
scratch
catch
scrap
26. off系列
see off
take off
call off
put off
fall off
initiative
transit
Transition
15.van系列
Advance
in advance
advanced
advantage
take advantage of
to advantage
举一反三：
disadvantage
16.Pear-，pare-系列
pear
pearl
*pear-，pare-:
pregnant
prewar
preschooler
1.ACT-系列
Act-，ag-
act
action
Actions speak louder than words.
active
activity
react
interact
2.Trans-系列
Trans-:
transact
transaction
translate
alone
lonely
along
alongsiongitude
latitude
length
belong
prolong
4.pro- , pre-系列
profound
promise
project
promote
propaganda
proximity
prepare
prevent
excessive
process
procedure
concession
recession
successor
predecessor
13.Gress-系列
progress
congress
congressional
aggressive
regret
14.It-系列
Visit
Initiate
【辨析】
initial
appear
appearance
disappear
apparent
apparently
17.–ent系列
ancient
confident
current
frequent
Present
Urgent
22. agri-系列
*agri-:
acre
agriculture
*cult-:
culture
cultural
transplant
transparent
transport
3.Tra-系列（trans-系列变形）
trash
track
trade
travel
tragedy
tragic
4.Port系列
Port
Airport
port-:
porter
Harry Potte
pot
hot-pot
passport
import
portrait
portray
【辨析】
Profile
Picture
Sketch
9.apt- & opt-系列
adapt
adopt
adept
apt-
opt-
option
optional
optimist
optimistic
10.ag-系列
ag-:
agenda
agent
detective
agency
travel agency