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# 14.13: Lesson Thirty-seven

Created by: CK-12

## The Suffix -ion

1. The suffix -ion is used to turn verbs into nouns. Analyze each of the following nouns into verb plus -ion:

Noun = Verb + Suffix
concentration = concentrat$\cancel{e}$ + ion
subtraction = subtract + ion
collection = collect + ion
communication = communicat$\cancel{e}$ + ion
perfection = perfect + ion
infection =infect + ion
invention = invent + ion
possession = possess + ion
supervision = supervis$\cancel{e}$ + ion
appreciation = appreciat$\cancel{e}$ + ion

2. Try some the other way around. Add -ion to each of the following verbs to turn them into nouns:

Verb + Suffix = Noun
educat$\cancel{e}$ + ion = education
instruct + ion = instruction
legislat$\cancel{e}$ + ion = legislation
contribut$\cancel{e}$ + ion = contribution
accommodat$\cancel{e}$ + ion = accommodation
constitut$\cancel{e}$ + ion = constitution
express + ion = expression
demonstrat$\cancel{e}$ + ion = demonstration
restrict + ion = restriction
distribut$\cancel{e}$ + ion = distribution
decorat$\cancel{e}$ + ion = decoration
indicat$\cancel{e}$ + ion = indication

3. You've seen that -ion is very often added to free stems - namely, verbs - to turn them into nouns. It is also often added to bound stems - again to turn them into nouns. Analyze each of the following nouns into bound stem and -ion:

Noun = Bound Stem + Suffix
occasion = occas($\cancel{e}$) + ion
mention = ment + ion
ambition = ambit + ion
recognition = recognit + ion
dimension = dimens($\cancel{e}$) + ion
fraction = fract + ion
proportion = proport + ion
fiction = fict + ion
function = funct + ion
precaution = precaut + ion

4. The suffix -ion is used to turn verbs into nouns. It is also added to bound stems to make nouns.

Teaching Notes.

Item 3. Technically, the bases in the bound stems of occasion and dimension are the free base case “instance, situation” and the bound base mense “measure. Since it may be a bit much to expect students to recognize the connections, it may be best to accept analyses with either final <e> deletion or simple addition.

## Categories:

1 , 2 , 3 , 4 , 5

## Date Created:

Feb 23, 2012

Apr 29, 2014
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