Make a sentence with "you was not there"

[Harrison1]

Can you tell me the difference between "was/wasn't

 

[emsr2d2]

Can you tell me the difference between "was/wasn't"?

That's a very odd question for an English teacher to ask. How can you teach English if you don't know something so basic?

 

[Tarheel]

The answer to that one: "Yes, I can."