Number- वचन 

In grammar, the number refers back to the depend of a noun or pronoun.
Example- Boy-boys, spouse-other halves, my-our, ox-oxen, it-they, and many others.
Types of Number:
There are two types of number-
  • Singular Number
  • Plural Number

Singular Number

It refers to the be counted of most effective one among a noun or pronoun.
instance: pen, table, aunt, father, goose, and so on.

Plural Number

It refers back to the depend of multiple of a noun or pronoun.
Number- वचन
Number- वचन 
instance: pens, tables, aunts, fathers, geese, and many others.

The rules of changing Singular Number to Plural Number

several rules are there to change the variety from singular to plural. they're as follows-
Rule 1:
In general “s” is used at the quit of a novel noun to make it plural
Example:
SingularPlural
PencilPencils
CowCows
HouseHouses
DogDogs
MobileMobiles

Rule 2:
If  there exist s, sh, ch, x and z ultimately, “es” gets for use.
Examples:
SingularPlural
BusBuses
DishDishes
BranchBranches
FoxFoxes
FezFezes
Rule 3:
whilst  pronunciation of ch is like “K”, just “s” is delivered on the stop
Example:
SingularPlural
MonarchMonarchs
PatriarchPatriarchs
MatriarchMatriarchs
StomachStomachs
HierarchHierarchs


Rule 4:
While there’s a “y” in the end  and a Consonant before that “y”, “i” substitutes it  and an “es” thereafter.
Example:
SingularPlural
StoryStories
HobbyHobbies
ArmyArmies
FlyFlies
BabyBabies


Rule 5:
If there’s a vowel beforehand of  that “y”, no want to exchange it, simplest “s” to add.
Example
SingularPlural
DonkeyDonkeys
ToyToys
DayDays
JoyJoys
PlayPlays


Rule 6:
“v” replaces f or fe and then provides an “es” to finish it.
Example:
SingularPlural
thiefThieves
WifeWives
KnifeKnives
WolfWolves
LeafLeaves


Rule 7:
“es” to be brought if the noun is finished with the aid of “o” and a consonant places ahead.
Example:
singularPlural
HeroHeroes
MangoMangoes
ZeroZeroes
PotatoPotatoes
EchoEchoes


Rule 8:
when there’s a vowel before that “o”, most effective “s” is enough.
Example
SingularPlural
CuckooCuckoos
BambooBamboos
StudioStudios
PortfolioPortfolios
CameoCameos
Exception 1: though there’s an “o” and a consonant ahead of  it, some nouns use simplest “s”.
Example:
SingularPlural
PhotoPhotos
PianoPianos
RadioRadios
CantoCantos
MemoMemos
Exception 2:for some, “s” and “es” each are correct.
Example:
SingularPlural
MosquitoMosquitos/mosquitoes
CommandoCommandos/commandoes
PorticoPorticos/porticoes
CalicoCalicos/calicoes
MementoMementos/mementoes


Rule 9:
some require changing the middle-vowel of the phrase to make it plural.
Example:
SingularPlural
ManMen
WomanWomen
FootFeet
MouseMice
ToothTeeth
Rule 10:
some  require en, ren and ne to add at final.
Example:
Singularplural
OxOxen
ChildChildren
BrotherBrethren (brothers also correct)
CowKine (cows also correct)
SisterSistren (sisters also correct)


Rule 11:
if “man” manner person in a compound noun(a  noun that includes two or extra phrases that at the same time make a single noun), “men”replaces that “man”.
Example:
singularplural
FishermanFishermen
WorkmanWorkmen
BoatmanBoatmen
Man-of-warMen-of-war
Salesmansalesmen


Rule 12:
when “guy” is just part of the word, or it  refers to any ethnic institution, race or civilian, there comes “s”.
Example:
SingularPlural
MussalmanMussalmans
BrahmanBrahmans
GermanGermans
NormanNormans


Rule 13:
“s” to be added while there’s a “ful” in the end.
Example:
singularplural
HandfulHandfuls
Mouthfulmouthfuls
SpoonfulSpoonfuls
armfulArmfuls
cupfulcupfuls


Rule 14:
If compound noun includes several words,  “s” comes to join  with the primary a part of that noun.
Example:
SingularPlural
Brother-in-lawBrothers-in-law
Passers-byPassers-by
Step-brotherStep-brothers
Commander-in-chiefCommanders-in-chief
Maid-servantMaid-servants


Rule 15:
in some instances,“s”is available in every element to make it so.
Example:
SingularPlural
Lord-justiceLords-justices
Man-servantMen-servants
Woman-servantWomen-servants


Rule 16:
besides, adding “s” best  in the end gets it executed for few.
Example:
SingularPlural
Book-shelfBook-shelves
Book-caseBook-cases
Major-generalMajor-generals
Poet-lauretePoet-lauretes
Forget-me-notForget-me-nots


Rule 17:
a few singular nouns haven't any plural shape, most effective utilized in singular.
Example:
Furniture
Scenery
Issue
Bread
expenditure


Rule 18:
Adversely, a few  are always used as a plural shape.
Example:
Mumps
Scissors
Trousers
Spectacles
Assets


Rule 19:
even though some nouns appear like singular, but in reality they are plural.
Example:
Government
Peasantry
People
Cattle
Mankind


Rule 20:
further, a few nouns look like plural although they're singular.
Example:
Physics
Politics
Ethics
News
Wages


Rule 21:
some have the same singular and plural shape.
Example:
Deer
Sheep
Species
Corps
Canon


Rule 22:
In case of letters, numbers and different symbols, it takes an apostrophe and s to exchange it.
Example:
Sam, write your g’s and y’s clearly.
John, add two 5’s and three 8’s.


Rule 23:
there may be no unique rule for changing the wide variety of pronouns. It’s all about memorizing.
Singularpluralsingularplural
IWeHim/herThem
MyOurYourYour
MineOursThisThese
MeUsThatThose
YouYouItThey
He/shetheyHis/hertheir
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