This video has been made to help learners understand the true meaning and use of conditional sentences in a nutshell.
There are four condtional sentences :zero conditional,possible condition,improbable condition and impossible condition.
*zero conditional- about general facts and instructions both in the if clause and main clause
*possible condition---simple present tense in the if clause and simple future tense in the main clause
*improbable condition---simple past and would/could/should+v1 in the main clause
*Impossible condition---had+v3 in the if clause and would have/should have/could have +v3