In the Use of English test (Paper 3), there is one short text with a total of ten gaps. You have to fill in the gaps with the correct form of the word given. This often means you have to add a prefix or suffix to the prompt word.
Prefixes and suffixes
Prefixes and suffixes are sets of letters that are added to the beginning or end of another word. They are not words in their own right and cannot stand on their own in a sentence.
Prefixes
Prefixes are added to the beginning of an existing word in order to create a new word with a different meaning.
For example:
word prefix new word
happy un- unhappy
cultural multi- multicultural
work over- overwork
space cyber- cyberspace
market super- supermarket
(dis-, non-, il-, mis-, im-, un-, in-, ir-...)
Suffixes
Suffixes are added to the end of an existing word.
For example:
word suffix new word
child -ish childish
work -er worker
taste -less tasteless
idol -ize/-ise idolize/idolise
like -able likeable
(-able, -action, -ency, -ful, -ly, -less, -ment, - ness....)
The addition of a suffix often changes a word from one word class to another. In the table above, the verb like becomes the adjective likeable, the noun idol becomes the verb idolize, and the nounchild becomes the adjective childish.
Reference:
http://www.oxforddictionaries.com/words/prefixes-and-suffixes
See more:
http://blog.oxforddictionaries.com/2012/10/ibles-and-ables/
Prefixes
Prefixes are added to the beginning of an existing word in order to create a new word with a different meaning.
For example:
word prefix new word
happy un- unhappy
cultural multi- multicultural
work over- overwork
space cyber- cyberspace
market super- supermarket
(dis-, non-, il-, mis-, im-, un-, in-, ir-...)
Suffixes
Suffixes are added to the end of an existing word.
For example:
word suffix new word
child -ish childish
work -er worker
taste -less tasteless
idol -ize/-ise idolize/idolise
like -able likeable
(-able, -action, -ency, -ful, -ly, -less, -ment, - ness....)
The addition of a suffix often changes a word from one word class to another. In the table above, the verb like becomes the adjective likeable, the noun idol becomes the verb idolize, and the nounchild becomes the adjective childish.
Reference:
http://www.oxforddictionaries.com/words/prefixes-and-suffixes
See more:
http://blog.oxforddictionaries.com/2012/10/ibles-and-ables/