Subjects:

Fce (6)

Prefixes which mean NOT

Instructions:

You are given an image, a sentence, and a set of prefixes.

Create the word you think corresponds to the image by chosing the correct prefix.

You can put a prefix into the input box by first clicking on it, and then clicking in the input box, under the prefixes, and the prefix will appear in the input box.

If the prefix chosen is correct, it will go green.

If it is not correct, it will go red.

Theory:

Prefixes and Suffixes are used to generate words of the same family as the source word.

Happy gives Unhappy by the addition of UN, and both words are part of the same family.

There is a group of prefixes which are used to create the opposite of a word.

These are UN, IM, IN, IL, IR and DIS.

For example,

happy - UN happy

visible - IN visible

legible - IL legible

possible - IM possible

responsible - IR responsible

honest - DIS honest

It is important to note that the addition of suffixes often change the spelling but the addition of prefixes do not affect the spelling of the word. They can sometimes affect the way the word is pronounced.

Often the prefixes UN and DIS are used to create the opposite form of adjectives,

happy - UN happy

honest - DIS honest

but they can also be used with verbs to create other verbs with the reverse action.

lock - UN lock

appear - DIS appear

There are some other prefixes that have specific meanings when used with verbs,

RE, OVER, and MIS,

write - RE write (RE here means DO AGAIN.)

cook - OVER cook (OVER here means TOO MUCH.)

understand - MIS understand (MIS here means incorrectly.)