求大神编一篇英语作文开头是Dear xxxI miss you very much,I want to tell you

考过去式的运用?
我觉得这篇应该写一般时态的吧,就是陈述事实的作文啊~
Dear xxx（自己想写谁就写谁）：
I miss you very much,I want to tell you something about my family.
I have a big and happy family.There are five people in my family:my parents my elder brother,sister and I.We were living in Australia in the past.But two years ago,we came to my favorite county,China and lived there.
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呃,我写不下去了,用过去式实在不知道怎么写,我想你可以就写家庭中过去发生的某件事应该就可以了吧.