am/is/are + present participle]
Examples:
- You are watching TV.
- Are you watching TV?
- You are not watching TV.
Examples:
- You are learning English now.
- You are not swimming now.
- Are you sleeping?
- I am sitting.
- I am not standing.
- Is he sitting or standing?
- They are reading their books.
- They are not watching television.
- What are you doing?
- Why aren't you doing your homework?