Conditional sentences describe situations and their results. English has four main types (zero to third) plus mixed conditionals, each expressing a different degree of likelihood or reality. They are built from an "if" clause and a main clause.
Practice
If it ___ tomorrow, we will cancel the picnic.
If waterto zero degrees Celsius, it freezes.
Put the words in the correct order (first conditional):
If you heat ice, it ___.
If sheearly, she will catch the first bus.
If we ___ enough money, we will buy a new sofa.
Put the words in the correct order (zero conditional):
If he ___ his homework, his teacher will be happy.
If youthe oven too high, the cake burns.
Put the words in the correct order (first conditional):