Vowel shift words - exclusive to udemy.com course - Spelling Tips & Strategies: to learn & remember spellings.
In this lesson we're going to look at how some words with long vowel sounds change their sound to a short vowel sound when we add consonant sequences and suffix endings to them.

Press the player - listen and read.

long - short
able - ability
assume - assumption
athlete - athletic
bible - biblical
break - breakfast
breathe - breath
cave - cavity
child - children
clean - cleanliness
combine - combination
compete - competition
compose - composition
confide - confidence
convene - convention
crime - criminal
custodian - custody
decide - decision
define - definition, definite, definitive
divide - division
divine - divinity

episode - episodic
expose - exposition
famous - infamous
female - feminine
five - fifty /fifth/ / fifteen
flame - flammable
grateful - gratitude
grave - gravity
hero - heroine
heal - health/healthy
holy - holiday
humane - humanity
ignite - ignition
invite - invitation
know - knowledge
line - linear
major - majority
mime - mimic
mine - mineral
nation - national
nature - natural
oppose - opposition

please - pleasant
pose - position
prepare - preparation
precise - precision
produce - production
relate - relative
reptile - reptilian
reside - resident , residence
revise - revision
rite - ritual
sane - sanity
serene - serenity
shade - shadow
social - society
south - southern
Spain - Spaniard/ Spanish (notice the 'i' has gone)
type - typical
vane - vanity
volcano - volcanic
wild - wilderness
wise - wisdom

Notice how the following words not only change the vowel sound but the 'c' sound too:
ferocious - ferocity
tenacious - tenacity
atrocious - atrocity

Check out the book to accompany this course: Spelling Strategies & Secrets: The essential how to spell guide
(suitable for British and American users)

Spelling Strategies & Secrets

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