Question tags: Lets go, shall we?

[Jesus1]

Hi! How is it going?

"Let?s go, shall we?"

I?ve just seen this, but I can?t understand why
if we can say: "He doesn?t like apples, does he?"
We can?t say 'Let?s go, shan?t we?'.

If the sentence above is right, then
"Let?s not go, shan?t we?"
Is it fine?

Please, help me to understand this.

Thanks indeed!

Jes?s

[Conchita]

‘Shall we’ is the question tag for suggestions with both ‘Let’s...’ or ‘Let’s not...’.

‘Shan’t we’ can be used as a tag for questions like, ‘We shall have to work hard, shan’t we?’ It sounds a bit formal, though, and the most common way of saying this would be, “We’ll have to work hard, won’t we?”