conditional+clauses+type+0

** STRUCTURE **

 * = ** //IF// CLAUSE (condition) ** ||= ** MAIN CLAUSE (result) ** ||
 * = ** present simple ** ||= ** present simple ** ||
 * //If you **heat** ice,// || //it **melts**// ||

//Example:// Unless you need more space, a small car is big enough for one person.
 * // UNLESS: //** it can be used instead of "//if//". It means "//if not//".

**//WHEN://** it can also replace "//if//". //Example:// When you fly low-cost airline, you have to pay for your drinks and snacks.

We use the zero conditional to talk about general **truths**, that is, things that always happen under certain conditions, like scientific facts.
 * USE: **


 * PRACTICE EXERCISES: **
 * exercise 1
 * exercise 2
 * exercise 3
 * exercise 4
 * exercise 5
 * exercise 6
 * exercise 7
 * exercise 8
 * exercise 9
 * exercise 10