Vocabulary

For example:

WordsSingularPlurals
SpeciesThis species of bird is endangered.Several species of birds are endangered.
SeriesThis TV series is very popular.These TV series are very popular.
CrisisThe company is facing a crisis.The company has faced multiple crises

Note: Even though the plural form “crises” is spelled differently from the singular “crisis”, they have the same sounds when spoken

Look for indicator

articles:

  • a
  • an
  • the