Irregular plural nouns | the MUTANT PLURALS | Grammar | Khan Academy Video Lecture | Complete Course on English Grammar: Upgrade your Speaking & Listening - Personal Skills

hello grammarians welcome to irregular
plurals part for the mutant plurals whoo
yes friends these words have mutant
superpowers in that they can transform
weirdly and obnoxiously not obeying any
other rules of English pluralization but
here's the cool thing there are only
seven words that behave this way what
way I'll explain by writing all of them
down the words are foot woman man tooth
goose Mouse louse looks pretty
straightforward right the thing about
these words is that none of them take s
as a plural so the plural of foot is not
foots the plural of woman is not woman's
the plural of tooth is not tooths the
reason these are called mutant plurals
is because the vowel sound the you or
the uh or the at or the or the or the or
the ow
turns into a different sound turns into
a different vowel sound so the plural of
foot is not foots but feet the plural of
woman is not woman's but women the
plural of man is not man's but men the
plural of tooth is not tooths but teeth
the plural of goose is not gooses but
geese the plural of mouse is not Mouse's
but mice and the plural of louse is not
louses but lice you can see that Mouse
and louse actually change their n
spelling as well to from SE to see even
though it's the same sound louse lice
for whatever reason just from some quirk
of our spelling history not only do we
change the vowels used here we also
change the consonants you say why is
this the case I'm so glad you asked I'm
going to save that
or another video in the meantime just
these seven words one two three four
five six seven are the only words in
English that behave this way so you're
in luck this is a handful of words to
memorize and provided you're not
borrowing anyone else's hats ideally you
won't have to worry about lice very
often
that's my hope you can learn anything
Dave it out