How can we express that a past condition has a result in the present, or that a present condition could have had a (hypothetical) past result? With the mixed conditionals.
There are more possible 'combinations'; for example, with future situations, but we will focus on the ones mentioned above:
a) Past condition with a result in the present:
If I had bought that house, I would be living in it now.
b) Present condition with a past result:
If she were Spanish, she could have become the Spanish Prime Minister.
