Read the box. find example of the verb "to be" in the dialogue. affirmative singular plural i am/i'm we are/we're you are/you're you are/ you're he is/he's they are/ they're she is/she's it is/it's negative singular plural i am not/i'm not we are not/ we aren't you are not/ you aren't you are not/ you aren't he is not/ he isn't they are not/ they aren't she is not/ she isn't it is not/ it isn't