This document discusses prefixes, suffixes, and derivatives. It defines prefixes and suffixes as adding before or after root words. Examples are given of prefixes like "bi-" and "un-" and suffixes like "-ous" and "-ful". Derivatives are formed by adding prefixes or suffixes to root words, expanding vocabulary. Common prefixes and suffixes are used to transform root words into new related words. The purpose of derivatives is to expand language by changing root words.

1. Languagelab 10.3
Master Derivatives

2. Prefix fixes itself before a word.
Recall:

3. E.g.: Prefixes 'bi-' and 'un-'

4. Prefix in Sentence
Alicia likes to cycle to school. Her
bicycle was a birthday gift.

5. Prefix in Sentence
The lock is spoilt. It is difficult to
unlock it.

6. Suffix fixes itself after a word.
Recall:

8. poisonous
beautiful
foldable
created
.
Some examples of Suffixes

9. Suffix in Sentences
The man is furious.
She is a joyful girl.
Lighting up a matchstick
playfully.
Reading a book carefully.

10. Derivatives
Derivatives are root words with
prefixes or suffixes.

11. All these are derivatives!
poisonous misbehave careless
Beautiful replant careful
foldable preview milky
created overeat player
.

12. Learning Activity
What derivatives can these words
transform into?
Play
Friend
Nation
Make

13. Learning Activity Answers
Play – player, playing, plays, playful
Friend – friendly, unfriendly, friends
Nation – national, nations
Make – maker, makers, making,
remake, unmake, makes

14. Learning Milestone
Why do we change root words into
derivatives?
What do we use to expand root
words into derivatives?

15. Learning Milestone Check
We change them to expand our
vocabulary, to write and to say
more.
We use prefixes and/or suffixes.

16. More on Master Derivatives
Download free worksheets from:
www.languagelab.sg/books
(Look for Learning Guide 10)
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