高中英文參考詞彙表：第二級 I, J, K

ideal
identity
ignore
ill
image
imagine
importance
impressive
improve (improvement)
include
income
increase
indeed
independence
independent
indicate
individual
industry
influence
ink
insist
instance
instant
instead
instruction
instrument
internal
international
Internet / internet
introduce
introduction
iron

jam
jog
joint
journal
judge
judgment / judgement
justice

keeper
ketchup
kilogram