No, he isn't= No, he is not? Is that right?
No, he isn't = No, he is not. = No, he's not.

Are they all right? What's the different situation of using them?

Thank you for help!!

Question

No, he isn't= No, he is not? Is that right?
No, he isn't = No, he is not. = No, he's not.

Are they all right? What's the different situation of using them?

Thank you for help!!

Answer

Yep, they all mean the same thing. "No, he is not" sounds a bit more formal than the other two, but  the only difference between "He's not" and "He isn't" is personal preference.

Answer

As Jmat says 'He is not.' is often more formal but it can also be used to emphasise that he is not something. For example. Bob is American, isn't he? No, he is not. He is British.

'He isn't' is more natural in everyday conversation.

Hope this helps

Bob

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