Because "aren't" translates to "are not" I pose the question, can you use both interchangeably (in the context of "aren't we all?")? "Are not" sounds very grammatically incorrect in this situation.
Can you say "you need not go there" as opposed to "you needn't go there"?
Basically, I thought you can say "you need not" instead of "you needn't" but that you can't say "are not" instead of "aren't" (in the context I've provided) because I've never heard the second. My friend believes that if you can use one example interchangeably, you can use the other as well.
So,
- Can you use example '1' interchangeably?
- Can you use example '2' interchangeably?