Conditional sentences

Conditional sentences are statements discussing known factors or hypothetical situations and their consequences. There are four different types of conditional sentences in English. Each expresses a different degree of probability that a situation will occur or would have occurred under certain circumstances.

Check out the following videos to learn about the zero, first and second conditionals:

Extra practice:

http://www.esl-lounge.com/student/grammar/3g18-first-second-conditional-exercise.php

https://www.engvid.com/zero-and-first-conditionals/

https://www.test-english.com/grammar-points/b1/first-and-second-conditionals/