A conditional is a sentence or part of a sentence that expresses a condition. There are five main ways of constructing conditional sentences in English.
In all cases, these sentences are made up of an if clause and a main clause.
All of them begin with:
A condition is what must happen before something else can happen. Conditional tenses are used to speculate about:
A clause creates a complete thought. A complete thought is also called a main clause or independent clause.
Subject + verb = complete thought
I eat bananas. = complete thought