The structures of the three types of conditional sentences
The first conditional
CONDITION : if + subject + present simple
RESULT : subject + future
Example : If he works harder, he will pass his exam.
The second conditional
CONDITION : if + subject + simple past
RESULT : subject + conditional tense
Example : If I had a lot of money, I would buy a new car.
The third conditional
CONDITION : if + subject + past perfect
RESULT : subject + past conditional tense
Example : If you had worked harder, you would have passed your exam.
When to use the three types of conditional.
The first conditional : it is possible and also very likely that the condition will be fulfilled.
The second conditional : it is possible but very unlikely that the condition will be fulfilled.
The third conditional is used to talk about unreal situations in the past.
