1. Primary Longman Elect
5B Chapter 3
Prefixes

2. Prefixes
We can add prefixes to some words to give the opposite meaning.
un- = not
un +
comfortable
 uncomfortable

3. Prefixes
We can add prefixes to some words to give the opposite meaning.
in- = not
in +
convenient
 inconvenient

4. Prefixes
We can add prefixes to some words to give the opposite meaning.
im- = not
im +
patient
 impatient

5. Prefixes un- in- im- uncomfortable inconvenient impatient untidy
incorrect
impolite
unhappy
inexpensive
unkind
inactive

6. Practice un in im
___happy

7. Practice in im
unhappy

8. Practice un in im 6
x 7 24 
___correct

9. Practice un im 6
x 7 24 
incorrect

10. Practice un in im
___tidy

11. Practice in im
untidy

12. Practice un in im
___polite

13. Practice un in
impolite

14. The End