The Irregular Plurals (from Khan Academy)
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English
•
10th Grade
•
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Samuel Edwards
Used 3+ times
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23 Slides • 17 Questions
1
The Irregular Plurals
(from Khan Academy)
2
Irregular plural nouns take several forms
Nouns ending in -f and -fe
Nouns ending in -o
Nouns That Change Vowels
Nouns That Change Substantially
Nouns That Do Not Change At All
3
Irregular plural nouns take several forms
Plurals of Latin and Greek words
Nouns ending in -us
Nouns ending in -is
Nouns ending in -om
Nouns ending in -um
Nouns ending in -ix
4
Nouns ending in -f and -fe
Think of a couple of nouns that end in either -f or -fe.
Get ready to share...
5
Open Ended
What NOUNS ending in -F of-FE did you come up with?
6
Open Ended
What are the PLURAL FORMS of those NOUNS ending in -F of-FE?
7
Some NOUNS ending in -f or -fe include...
knife, life, wife, calf, and leaf
knive becomes knives
life becomes lives
wife becomes wives
calf becomes calves
and leaf becomes leaves
8
Nouns ending in -o
Think of a couple of nouns that end in -o.
Get ready to share...
9
Open Ended
What NOUNS ending in -o did you come up with?
10
Open Ended
What are the PLURAL FORMS of those NOUNS ending in -o
11
Some NOUNS ending in -o include...
potato, tomato, hero, torpedo, and veto
potato becomes potatoes
tomato becomes tomatoes
torpedo becomes torpedoes
veto becomes vetoes
12
Some NOUNS change vowels
What are the plurals of the following nouns?
foot, tooth, goose, man, and woman
get ready to share...
13
Open Ended
What are the plurals of the following nouns?
foot, tooth, goose, man, woman
14
These NOUNS that change vowels take the following plural forms...
foot becomes feet
tooth becomes teeth
goose becomes geese
man becomes men
woman becomes women
15
Some NOUNS change substantially
What are the plurals of the following nouns?
louse, mouse, die, ox, child, and person
Get ready to share...
16
Open Ended
What are the plurals of the following nouns?
louse, mouse, die, ox, child, person
17
These NOUNS that change substantially take the following plural forms...
louse becomes lice
mouse becomes mice
die becomes dice
ox becomes oxen
child becomes children
person becomes people
18
Some NOUNS do not change at all
What are the plurals of the following nouns?
sheep, fish, deer, moose, swine, buffalo, shrimp, and trout
Get ready to share...
19
Open Ended
What are the plurals of the following nouns?
sheep, fish, deer, moose, swine, buffalo, shrimp, trout
20
That's right! These plural NOUNS stay the same:
one sheep, two sheep
one fish, two fish
one deer, two deer
one moose, two moose
one swine, two swine
one buffalo, two buffalo
21
That's right! These plural NOUNS stay the same:
one shrimp, two shrimp
one trount, two trount
and one bison, a billion bison
22
Poll
What do you think is the plural form of the word "focus"?
focus
focuses
focusen
foci
23
The answer is....FOCI!
One focus becomes three foci
24
Latin or Greek words
There are certain words we use on a regular basis, especially in mathematical and scientific contexts, that are borrowed from Latin or Greek. Many of these words retain their Latin or Greek plurals in math and science settings. Some of them also have anglicized plural forms that have come into common use.
25
Poll
What do you think is the plural form of the word "radius"?
radius
radiuses
radiusen
radii
26
The answer is....RADII!
One radius becomes four radii
27
Multiple Choice
What do you think is the plural form of the word "fungus"?
fungus
fungi
fungusen
funguses
28
To make a word ending in -us plural, change -us to -i. Many plurals of words ending in -us have anglicized versions, formed by simply adding -es. The latter method sounds more natural in informal settings. If there is an anglicized version that is well accepted, this will be noted in the dictionary.
29
Multiple Choice
What do you think is the plural form of the word "cactus"?
cacti
cactus
cactusar
cactuses
30
To make a word ending in -us plural, change -us to -i. Many plurals of words ending in -us have anglicized versions, formed by simply adding -es. The latter method sounds more natural in informal settings. If there is an anglicized version that is well accepted, this will be noted in the dictionary.
31
Multiple Choice
What do you think is the plural form of the word "octopus"?
octopusen
octopusi
octopuses
octopi
32
Multiple Select
What do you think is the plural form of the word "hippopotamus"?
hippopotamus
hippopotami
hippopotopatomupopes
hippos
33
Some NOUNS ending in -is are odd
What are the PLURAL forms of the following:
axis, analysis, crisis, thesis
Get ready to share...
34
Open Ended
What do you think are the plural forms of axis, analysis, crisis, thesis?
35
Multiple Choice
Try choosing from the following:
two axis, two analysis, two crisis, two thesis
two axises, two analysises, two crisises, two thesises
two axes, two analyses, two crises, two theses
36
Nouns with an -is ending can be made plural by changing -is to -es. Some people have a hard time remembering that the plural of crisis is crises and the plural of axis is axes, but crisises and axises are incorrect.
37
Some NOUNS ending in -on are unusual
What are the PLURAL forms of the following:
phenomenon and criterion
Get ready to share...
38
Open Ended
What do you think are the plural forms of criterion and phenomenon?
39
Greek words inding in -on change their ending to -a.
Thus, one criterion becomes two criteria.
And one phenomenon becomes two phenomena.
40
Multiple Select
What do you think are the plural forms of criterion and phenomenon?
one criterion, two criteria
one phenomenon, two phenomena
one criterion, two criterius
one phenomenon, two phenomenus
The Irregular Plurals
(from Khan Academy)
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