butterfl y butterfl ies
Plurals changing  y  to  i
pon y pon ies To make the word  pony   plural  (mean  more than one ) we change the  y  to  i  before adding  -es .
one dais y nine dais ies
one fl y three fl ies
one pupp y two pupp ies
strawberr y strawberr ies
fair y fair ies
bab y bab ies
lad y lad ies
 
A swarm of _______.  (fl y ) fl ies
Two _________.  (pon y ) pon ies
A litter of _________.  (pupp y ) pupp ies
A cluster of _________.  (berr y ) berr ies
A chain of _________.  (dais y ) dais ies
Many _________.  (bab y ) bab ies
A few _________.  (lad y ) lad ies
sp y hobb ies stor y cit y hobb y cit ies stor ies sp ies

Plural 'ies'