potential verb for ru-verb, drop ru and add -rareru
見る
見られる
potential verb for u-verbs, drop u and add eru
行くーいける 待つーまてる 話すー話せる 読むー読める 買うーかえる 死ぬーしねる 泳ぐー泳げる 取るとるーとれる 遊ぶー遊べる
potential verb for irregular verbs
くるーこられる
するーできる
potential verbs conjugate as regular ru-verbs
.
Those verbs that take the particleを can take either をorが when they have been made into the potential. できる takes がalmost all the time. All particles other thanを remain the same when the verb is turn into the potential.
.
When you want to mention not just one reason, you can useし in place of から. しusually follows a predicate in the short form.
何何し、何何し、situation.