Conditionals describe the result of a certain condition. The if clause tells you the condition ( If you study hard ) and the main clause tells you the result ( you will pass your exams ). The order of the clauses does not change the meaning. If you study hard , you will pass your exams. [1] You will pass your exams if you study hard . [2] ★ If you are writing a sentence starting with if clause , you have to place comma (,) just before the main clause [1] . ★ If you are starting a sentence with main clause then you don’t have to place comma before if clause [2] . Conditional sentences are often divided into different types. Zero conditional We use the zero conditional to talk about things that are generally true, especially for laws and rules. The structure is: if/when + present simple >> present simple If I drink too much coffee , I can't sleep at night. Ice melts if you heat it . When the sun goes down , it gets dark. First Conditional We use the first cond