Conditional sentences. Again I wonder, what type of conditional sentence I use? Let's look at the next example: "If you bought yesterday fish we will eat fish tomorrow". The sentence is contains some probable past ("you bought fish") and some probable future ("we will eat fish tomorrow"). It means that the past for the speaker is uncertain. He knows that if one fact of the past is true then some event in the future is true too, otherwise the event of the future is false as well. And if you know, please, give me a link to some page where I could read about grammar rules of these kinds of sentences in English language. Thanks.