When we add a prefix such as in- or un- or dis-,im-, il-, non, ir- etc. to the beginning of
adjectives, adverbs and verbs giving them the opposite meaning, here we have some rules:
before "r" one has to use "ir" like irreparable;
before "l",use "il" like illogical;
before "t", use "dis" like distrust;
before "c, b or s" use "un or in" like uncomfortable/unbelievable and incomplete/
incredible/ insanity;
 before "p", use "im" like impossible;
 before "h or f", use "un" like unhappy/unfettered
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Exercise 1: Write the negative form of these words by adding a negative prefix: "un-",
"dis-", "ir-", "il-", "in-", or "im-".
1.
comfortable
2.
patient
3.
honest
4.
lucky
5.
formal
6.
possible
7.
popular
8.
legal
9.
polite
10. logical
11. convenient
Exercise 1: Add the correct negative prefixes.
1.
Something that is ____adequate is not good enough.
2.
A person who can't read and write is ____literate.
3.
Something that is ____reversible cannot be changed back.
4.
If somebody is ____reliable, you cannot trust or depend on them.
5.
If something is ____legitimate, it means it is not allowed or accepted.
6.
A person who is ____honest cheats others.
7.
If you get something ____solicited, you didn't ask for it and you don't want it.
8.
Something that is ____measurable is too big to be measured.
9.
If you are ____loyal, you betray your friends or your country.
Performed by: Alexandra Jiménez