eli5: as a native english speaker, how are we supposed to know if an English words plural is the same as singular? (Ex: moose, sheep, paper)

Question

eli5: as a native english speaker, how are we supposed to know if an English words plural is the same as singular? (Ex: moose, sheep, paper)

In: Other

Answer 1

That’s the neat part, you don’t! 

Those words are exceptions to the general rule that plural versions of words add an S to the end. 

Because exceptions do not follow a rule, you just need to learn the exceptions, there isn’t an easy way to know how they all work.