～から
から added to a sentence means “because.” The explanation clause can be added into the sentence using から: explanation + から.
explanation から, situation.
＝ situation because explanation
＝ explanation therefore situation
あしたしけんがあるから、わたしはこんばんべんきょうします。
I will study this evening because we will have an exam tomorrow.
(= We will have an exam tomorrow, therefore, I will study this evening.)
かぶきのきっぷがありますから、いっしょにみにいきましょう。
Let’s go see Kabuki. I have tickets.