Prefixes and Suffixes

• English, Digital Literacy, Citizenship
• Primary Education
• Age 10

Prefixes and Suffixes

Collins: Student's Book 4

page 94 and 95

What is a root word?

What is a prefix?

What is a suffix?

Spelling Rules for using Prefixes:

1. Add 'in', infront of most root words to change them to their opposite: 'incorrect', 'inefficient', 'invisible'.

2. If the root word begings with m or p, then add im- to the root word: 'imperfect', 'immobile'.

3. If the root word begings with r, add ir- to the root word: 'irregular'.

4. If the root word begings with l, add il- to the root word: 'illegal'.

-correct

1. in
2. im
3. ir
4. il

-perfect

1. in
2. ir
3. im
4. il

-regular

1. ir
2. im
3. in
4. il

-legal

1. ir
2. in
3. il
4. im

-efficient

1. ir
2. im
3. in
4. il

-visible

1. ir
2. il
3. in
4. im

-mobile

1. ir
2. in
3. im
4. il

-credible

1. im
2. in
3. ir
4. il

-possible

1. ir
2. in
3. il
4. im

Spelling Rules for using Suffixes:

1. Add 'able' when you can hear a whole root word before putting in a Suffix.

2. Add 'ible' when you can't hear a whole root word before putting in a Suffix.

3. Be careful, not every words with 'able' and 'ible' follow these rules.

4. Use a dictionary just to make sure.

depend-

1. able
2. ible
3. -
4. -

comfort-

1. able
2. ible
3. -
4. -

horr-

1. ible
2. able
3. -
4. -

vis-

1. ible
2. able
3. -
4. -

cred-

1. ible
2. able
3. -
4. -

poss-

1. ible
2. able
3. -
4. -

afford=

1. able
2. ible
3. -
4. -

human

logical

mortal

sane

polite

convenient

rational

audible

reason

intellig

terr

allow

reli

incred

ed

accept

Spelling rules for
Prefixes and
Suffixes

     Select one word with each pattern

         (in-, im-, ir-, il-, -ible and -able) 

  and try to use all the words in a sentence.