Use of Am, Is, Are
A singular noun names one person, place, thing, or idea.
Example: boy, girl, notebook, pencil, tree, football, story etc.
A plural noun names more than one person, place, thing, or idea.
Example: boys, girls, notebooks, pencils, trees, footballs, stories etc.
Use of ‘Am’
Use ‘Am’ with the first person pronoun I.
Example:
1. I am a student.
2. I am a boy.
3. I am a painter.
4. I am happy.
Use of ‘is’
Use ‘is’ when the subject is a singular noun or a third person singular pronoun i.e. he, she and it.
Example:
1. He is my best friend.
2. Ayush is an intelligent boy.
3. It is a cat.
4. She is beautiful.
Use of ‘are’
Use ‘are’ when the subject is a plural noun or plural pronoun i.e. they, you, we.
Example:
1. You are great.
2. Boys are playing in the park.
3. They are watching movie.
4. We are children.