高中英文參考詞彙表：第四級 I, J, K

identical
identification
identify
idiom
idle
idol
ignorance
ignorant
illustrate
illustration
imaginary
imaginative
imitate
imitation
immigrant
immigrate
immigration
impact
imply
impose
impression
incident
including
incredible
indication
infant
infection
inflation
influential
informative
ingredient
initial
injure
innocence
input
insert
inspection
inspiration
inspire
install
instinct
instruct
instructor
insult
insurance
intellectual
intelligence
intend
intense
intensity
intensive
intention
interact
interaction
interfere
intermediate
interpret
interruption
intimate
intuition
invade
invasion
invention
invest (investment)
investigation
involve (involvement)
isolate
isolation
issue

jealousy

keen
kettle
kneel
knob