If there is too much rain in summer, bees won't (will not) produce a lot of honey.
If we put the cat and the dog in one room, they will fight
If I go sailing, i will catch some fish
If the cat is sick, we will take him to the vet
If i see a toad, i will take a photo
После "if" никогда не употребляется will, только во 2 части предложения