1. Словообразование в английском языке с помощью приставок
Author: Maria St. Nickiforova, EL teacher, Secondary School 83, Seversk Tomsk Region

2. mis-
sub-
re-
Prefixes
in-
bi-
im-
il-
ir-
co-
un-
dis-

3. un- bi- (tri-) dis- sub- co- mis- re- in-, il-, ir-, im- Practice
You can often understand new words
if you know the meaning of the prefix.
un bi- (tri-)
dis sub-
co mis-
re in-, il-, ir-, im-
Practice

4. un- = not e.g. An unusual situation is a situation that is not usual.
untie unusual
untidy unhappy
unlocked unequal
uneatable uncertain
unemployed unscientific
undoubted uneducated
unimportant unfriendly

5. e.g. A dishonest person is someone
dis- = not
e.g. A dishonest person is someone
who is not honest.
dishonest discharge
disbelief disbelieve
disappear disappearance
disorder disabled
disagree disagreement
dislike discomfort
disadvantage disinfection

6. in-, il-, im-, ir- = not, non incredible illegal incorrect illogical
indirect illiterate
incredible immaterial
insincere immature
inactive immortal
informal immemorial
irrelevant imperfect
irregular impossible
insensible impatient

7. e.g. A coincidence is when two things happen at the same time.
co- = together
e.g. A coincidence is when two things happen at the same time.
co-act co-worker
co-author co-pilot
cooperate cooperation
coexist coexistence
coordinate coordination

8. e.g. If we can recycle something,
re- = again
e.g. If we can recycle something,
we can use it again.
redo repay
repay rewrite
replace rebuild
rearrange repack
recycle replant
reuse reprint

9. bi- = two tri- = three e.g. A bicycle is a vehicle with two wheels.
biweekly bilingual
bimonthly bi-level
tri- = three
e.g. A tricycle is a vehicle with three wheels.
triangle triathlon
triweekly trimonthly

10. which goes under the sea.
sub- = under
e.g. A submarine is a ship
which goes under the sea.
subtitle subclass subculture subarctic
sub-company sub-editor
subterranean sublevel

11. mis- = wrong e.g. “Mispronounce” means
to pronounce a word with a mistake.
misspell mislead
misprint misfortune
misunderstand mistreat

12. Make new words with the help of prefixes and translate them.
root word
prefix un
tie
untie
belief
dis
disbelief

13. bilingual coexistence disadvantage
prefix
root word bi
lingual
bilingual co
existence
coexistence
advantage
dis
disadvantage

14. dislike unhappy subtitle
prefix
root word
dis
like
dislike
happy un
unhappy
title
sub
subtitle

15. reuse uneatable mispronounce
prefix
root word re
use
reuse
eatable un
uneatable
pronounce
mis
mispronounce

16. unequal disappear co-worker
prefix
root word un
equal
unequal
appear
dis
disappear
worker co
co-worker

17. rebuild unfriendly unimportant
prefix
root word re
build
rebuild un
friendly
unfriendly
important un
unimportant

18. disability disagree misunderstand
prefix
root word
dis
ability
disability
dis
agree
disagree
understand
mis
misunderstand

19. В презентации использовались
материалы из учебника
Andrew Littlejohn, Diana Hicks
Cambridge English for Schools in Russia. Level Four.
Под редакцией Ольги Виноградовой.
М.: Дрофа, С.39, 136, 137.