Grammar

[puzzle]

A." I went to the movie with Mike yesterday."
B." How did / do you know this Mike?"

I.Both "did" and "do" are right in this case?
II.Any difference between them in this case?
Please.

 

[Horsa]

The answer is 'do' unless Mike is now dead. Since it was only yesterday the speaker was with Mike we can safely assume she/he still knows him. On the other hand, 'did' would be OK if Mike had died since they went to the cinema or in a different sentence where the relationship between Mike and the first speaker was clearly in the past and no longer existed. For example the first speaker says 'I used to know a stange guy called Mike, who ...'

 

[puzzle]

TU!
Any other comments?