In Japanese grammar, the conditional form is used to express an action or event that is dependent on a condition being met. This form is created by modifying the main verb of the sentence. The most common conditional forms in Japanese are the « ~たら » (if/when), « ~ば » (if), and « ~なら » (if) forms. Each of these forms has its nuances, but can generally be used to express a range of possibilities or hypothetical situations. Getting familiar with these conditional forms is crucial on your way to mastering Japanese grammar.