we put 's' at the end of a noun and a verb.
At the end of a noun to make 'plural' a boy will be boys
a book will be 3 books.
On the other hand we put 's' at the end of a verb to make it 'singular'
Tom plays. She plays. but we play they play
But after do/ does /did we use the infinitive 'the bare verb or the verb without any adding s at the end
Tom doesn't play. where does Tom live?
what does it mean?
Student or Learner