Zero Conditional.

ZERO CONDITIONAL The zero conditional is use for talk universal truths, that is, fact that always occur when a conditional occurs. EXAMPLE: If you touch a fire, you get burned. With all the conditionals you can turn the sentences, you can start with the resulting clause an in this case it doesn't get comma, example : You get burned if you touch a fire. The zero conditional is formed by two sentences, the conditional clause and the resulting clause those are in the present simple. Yo can use WHEN=IF *The ZERO CONDITIONAL if can also be used to give orders or instructions.