In order to determine history relevant to the present complaint, you will need to ask Dr Zheng a series of questions. You have been advised that Dr Zheng frequently reverts to speaking Cantonese and therefore arrange for an interpreter to be present. He also relies on his wife more and more for communication and you therefore feel it is appropriate to interview them together on this occasion.
I'm OK with the things I do now. I like to dance.
While Dr Zheng goes off for his physical assessment, you take the opportunity to speak with Mrs Zheng alone.