I recently wrote this on a quiz: "You will pass this quiz if you studied." To me this sentence means that the test is happening now, you may or may not pass in the future depending on whether or not you studied in the past. Some of my colleagues, who have a first language other than English, pointed out that this sentence doesn't conform to rules governing conditionals and therefore is ungrammatical. However, as a native speaker, my intuition is that it is grammatical and my colleagues who are natives speakers agree that it 'makes sense'. I checked my grammar reference book and I haven't been able to find any examples of conditional sentences where a simple past "if" clause is paired with a "will" clause referring to a future effect of that past event when the time of speaking occurs sometime between the cause and effect. However, I can think of several other example sentences which may occur in such a situation. For example: A detective may say to a murder suspect, "I will find out if you killed that women." Or, when a person enters a room which previously contained a poisoned cupcake to find the cupcake missing and another person in the room he may say, "If you ate that cupcake you will die." I have two questions: 1. Are such sentences grammatical or not? & 2. Does anyone know of any authoritative sources which refer to sentences like that?