Verb conjugation of "lasciare" in Italian

My mom and dad used to speak English when they wanted to say something I shouldn't understand. In this way I have learned English. I did not tell them till late, but I did understand every word they said.
It was the first time that we were on the Italian side of the lakes. It is amazing to see how different things can be on two sides of the border. People dress and behave differently. It was a great experience. I even used words from Lesson 45.
I am in my German lesson and I'm learning about the subjunctive. I had never heard about it before. Can you ever deal with all Verb conjugations? I just totally misunderstand the past tense!