CONDITIONAL SENTENCES Types of Conditional Sentences 1 Zero Conditional Certainty 2 First Conditional Future Possibility 3 Second Conditional Present Future 4 Third Conditional Past Hypothetical 5 Mixed Conditional Past Action with Hypothetical Present Future Consequence Zero Conditional If present simple then present simple Used for universal truths facts and habits Examples If you heat ice it melts If it rains the streets get wet First Conditional If present simple then Used for future possibilities or will can may base verb predictions Examples If it rains tomorrow I will take an If I get the job I will move to the city umbrella Second Conditional If past simple then would could might base verb Used for unlikely or hypothetical situations in the present or future Examples If I won the lottery I would buy a If I had more time I would travel house Third Conditional If past perfect then would have past participle Used for hypothetical past situations and their consequences Examples If I had studied harder I would have If I had taken that job I would have passed the exam been happier Mixed Conditional If past simple past perfect then would could might base verb Used for hypothetical past actions with present or future consequences Examples If I hadn t moved to this city I would be working If I had graduated earlier I would have started in a different company now my career sooner Conditional Sentence Forms If clause If subject verb present past past perfect Main clause then subject verb present past will can may base verb