1.
able
系列
*able
ability
*-ity
：
disabled
*dis-:
enable
*en-:
enablesb.todosth.
comparable
innumerable
practicable
profitable
难词死记：
vulnerable
2.en-
系列
enlarge
endanger
enrich
enhance
engagement
额外收获：
fatal
ally
，
alliance
rally
猜一猜：
enlighten
allow
allowance
makeallowancefor
You
should
make
allowance
for
his
youth.
=
You
should
allowforhisyouth.
alone
lonely
along
alongside
3.long-
系列
long
longitude
latitude
length
belong
prolong
4.pro-,pre-
系列
profound
promise
project
promote
propaganda
proximity
prepare
prevent
pregnant
prewar
preschooler
1.
ACT-
系列
Act-
，
ag-
act
action
Actions
speak
louder
thanwords.
active
activity
react
interact
2.
Trans-
系列
Trans-:
transact
transaction
translate
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
HarryPotte
pot
