Yes. So I did.

[joham]

--Did you go to see the film Let Go Bullets last night?
--Yes. So I did.

Is the Yes in the reply necessary? I would think using 'So I did' or just 'Yes, I did' would be ok. But I'd like to know whether many native English speakers use 'Yes. So I did.' in such a context.

Thank you in advance.

 

[probus]

You are correct that "Yes I did." is the common colloquial form.

In everyday speech you would not likely hear "So I did", or "Yes. So I did." These phrases are either dialect, or the speaker is trying to convey some special effect.

 

[5jj]

--Did you go to see the film Let Go Bullets last night?
--Yes. So I did.

Is the Yes in the reply necessary? I would think using 'So I did' or just 'Yes, I did' would be ok. But I'd like to know whether many native English speakers use 'Yes. So I did.' in such a context.

Thank you in advance.

'Yes,' or 'Yes I did' are the only natural answers in standard BrE.
'I did' is more formal.

 

[bhaisahab]

An Irish English speaker would be likely to say "I did so". So you might hear that if you meet any Irish people.

 

[BobK]

--Did you go to see the film Let Go Bullets last night?
--Yes. So I did.

Is the Yes in the reply necessary? I would think using 'So I did' or just 'Yes, I did' would be ok. But I'd like to know whether many native English speakers use 'Yes. So I did.' in such a context.

Thank you in advance.

Not many, but some. This may have something to do with the fact that Latin had no single word for 'yes' so many translations introduced a 'so' on the basis of something like ita vero ('thus indeed'), and many older prescriptive grammars 'followed suit' [='adopted the same approach'].

Tangentially, it was on the basis of the Latin etiam that most Romance languages introduced the particle 'si'.

b